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June 2002
Process Industry Practices
Architectural
PIP ARC01015
Architectural and Building Utilities
Design Criteria
PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES
In an effort to minimize the cost of process industry facilities, this Practice has
been prepared from the technical requirements in the existing standards of major
industrial users, contractors, or standards organizations. By harmonizing these
technical requirements into a single set of Practices, administrative, application, and
engineering costs to both the purchaser and the manufacturer should be reduced. While
this Practice is expected to incorporate the majority of requirements of most users,
individual applications may involve requirements that will be appended to and take
precedence over this Practice. Determinations concerning fitness for purpose and
particular matters or application of the Practice to particular project or engineering
situations should not be made solely on information contained in these materials. The
use of trade names from time to time should not be viewed as an expression of
preference but rather recognized as normal usage in the trade. Other brands having the
same specifications are equally correct and may be substituted for those named. All
Practices or guidelines are intended to be consistent with applicable laws and
regulations including OSHA requirements. To the extent these Practices or guidelines
should conflict with OSHA or other applicable laws or regulations, such laws or
regulations must be followed. Consult an appropriate professional before applying or
acting on any material contained in or suggested by the Practice.
This Practice is subject to revision at any time by the responsible Function Team and
will be reviewed every 5 years. This Practice will be revised, reaffirmed, or withdrawn.
Information on whether this Practice has been revised may be found at www.pip.org.
© Process Industry Practices (PIP), Construction Industry Institute, The
University of Texas at Austin, 3925 West Braker Lane (R4500), Austin,
Texas 78759. PIP member companies and subscribers may copy this Practice
for their internal use. Changes, overlays, addenda, or modifications of any
kind are not permitted within any PIP Practice without the express written
authorization of PIP.
PIP will not consider requests for interpretations (inquiries) for this Practice.
Not printed with State funds
June 2002
Process Industry Practices Page 1 of 37
Process Industry Practices
Architectural
PIP ARC01015
Architectural and Building Utilities
Design Criteria
Table of Contents
1. Introduction..................................2
1.1 Purpose ............................................. 2
1.2 Scope................................................. 2
2. References ...................................2
2.1 Process Industry Practices ................ 2
2.2 Industry Codes, Reports, and
Standards .......................................... 2
2.3 Government Regulations................... 5
3. Definitions ....................................5
4. Building Design............................5
4.1 Occupancy......................................... 5
4.2 Means of Egress................................ 6
4.3 Foundation and Structure .................. 6
4.4 Materials and Methods
of Construction................................... 6
4.5 Pre-Engineered Metal Buildings ........ 6
5. Products .......................................6
5.1 Concrete ............................................ 6
5.2 Masonry............................................. 6
5.3 Metals ................................................ 6
5.4 Woods (and Plastics)......................... 6
5.5 Gypsum Board Assemblies ............... 7
5.6 Ceilings .............................................. 7
5.7 Flooring.............................................. 7
5.8 Thermal and Moisture Protection ...... 7
5.9 Fire Resistance.................................. 8
5.10 Doors and Windows .......................... 8
5.11 Specialties ......................................... 9
5.12 Conveying Systems ......................... 10
6. Building Utilities ........................ 11
6.1 Heating, Ventilation, and Air
Conditioning (HVAC) ....................... 11
6.2 Electrical Work................................. 25
6.3 Communications.............................. 27
6.4 Fire Protection and Safety ............... 32
6.5 Plumbing.......................................... 35
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 2 of 37 Process Industry Practices
1. Introduction
1.1 Purpose
This Practice provides the architect and the engineer with criteria for building design
and building utilities within process facilities.
1.2 Scope
These general criteria define the minimum requirements for the design of buildings
for process industry facilities. This Practice is intended to be used in conjunction
with PIP ARC01016 - Building Data Sheet, PIP CVC01017 - Plant Site Data Sheet,
and PIP STC01015 - Structural Design Criteria.
This Practice is not a design guide and does not apply to open industrial structures.
2. References
When adopted in these criteria, the latest edition of the following applicable codes,
standards, specifications, and references in effect on the date of contract award shall be used,
except as otherwise specified. Short titles will be used herein when appropriate.
2.1 Process Industry Practices (PIP)
– PIP ARC01016 - Building Data Sheet
– PIP ARS08111 - Standard Steel Doors and Frames Specification
– PIP ARS08710 - Door Hardware Specification
– PIP ARS13120 - Pre-Engineered Metal Buildings Specification
– PIP CVC01017 - Plant Site Data Sheets
– PIP STC01015 - Structural Design Criteria
– PIP STC01018 - Blast Resistant Building Design Criteria
2.2 Industry Codes, Reports, and Standards
• Air Movement and Control Association (AMCA)
– AMCA 511 - Certified Ratings Program for Air Control Devices
• Aluminum Association (AA)
– AA ADM - Aluminum Design Manual
• American Conference of Government Industrial Hygienists (ACGIH)
– ACGIH 2090 - Industrial Ventilation
• American Petroleum Institute (API)
– API RP 540 - Electrical Installations in Petroleum Processing Plants
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 3 of 37
• American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc
(ASHRAE)
– ASHRAE HVAC - Applications IP
– ASHRAE - Fundamentals IP
– ASHRAE - Refrigeration IP
– ASHRAE 62 - Ventilation for Acceptable Indoor Air Quality
– ASHRAE 110 - Method of Testing Performance of Laboratory Fume Hoods
• American Society of Mechanical Engineers (ASME)
– ASME A17.1 with Addenda - Standard Safety Code for Elevators and
Escalators
• American Society for Testing and Materials (ASTM)
– ASTM E84 - Standard Test Method for Surface Burning Characteristics of
Building Materials
– ASTM E119 REV A - Standard Test Methods for Fire Tests of Building
Construction and Materials
– ASTM E1264 - Standard Classification for Acoustical Ceiling Products
– ASTM F1066 - Standard Specifications for Vinyl Composition Floor Tile
– ASTM F1700 - Standard Specifications for Solid Vinyl Floor Tile
• Ceilings and Interior Systems Construction Association (CISCA)
– Ceiling System Handbook
– Recommended Test Procedures for Access Floors
• International Code Council (ICC)
– International Building Code (IBC)
– International Energy Conservation Code (IECC)
– International Fire Code (IFC)
– International Mechanical Code (IMC)
– International Plumbing Code (IPC)
• Institute of Electrical and Electronic Engineers (IEEE)
– IEEE 1100 - Recommended Practice for Powering and Grounding Electronic
Equipment
• Instrumentation Systems and Automation Society (ISA Society)
– ISA 71.04 - Environmental Conditions for Process Measurement and Control
Systems: Airborne Contaminants
• National Fire Protection Association (NFPA)
– NFPA 13 - Standard for the Installation of Sprinkler Systems
– NFPA 45 - Standard on Fire Protection for Laboratories Using Chemicals
– NFPA 70 - National Electrical Code (NEC)
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 4 of 37 Process Industry Practices
– NFPA 72 - National Fire Alarm Code
– NFPA 75 - Standard for Protection of Electronic Computer/Data Processing
Equipment
– NFPA 80 - Standard for Fire Doors and Fire Windows
– NFPA 90A - Standard for the Installation of Air- Conditioning and Ventilating
Systems
– NFPA 91 - Standard for Exhaust Systems for Air Conveying, of Vapors, Gases,
Mists, and Noncombustible Particulate Solids
– NFPA 101 - Life Safety Code
– NFPA 220 - Standard on Types of Building Construction
– NFPA 232 - Standard for the Protection of Records
– NFPA 252 - Standard Methods of Fire Tests of Door Assemblies
– NFPA 496 - Standard for Purged and Pressurized Enclosures for Electrical
Equipment
– NFPA 2001 - Standard on Clean Agent Fire Extinguishing Systems
• National Roofing Contractors Association (NRCA)
– NRCA ITEM ML102 - Roofing and Waterproofing Manual
• Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA)
– SMACNA FSRDI - Fire, Smoke and Radiation Damper Installation Guide for
HVAC Systems
– SMACNA HVACMF - HVAC Duct Construction Standards Metal and
Flexible
• Steel Deck Institute (SDI)
– Design Manual for Composite Decks, Form Decks and Roof Decks
• Telecommunication Industry Association (TIA)
– TIA/EIA - 568-B - Commercial Building Telecommunications Cabling
Standard
– TIA/EIA - 569-A - Commercial Building Standard for Telecommunication
Pathways and Spaces
– TIA/EIA - 570-A - Residential Telecommunications Wiring Standard
– TIA/EIA - 606 - Administration Standard for the Telecommunications
Infrastructure of Commercial Buildings
– TIA/EIA - 607 - Commercial Building Grounding and Bonding Requirements
for Telecommunications
• Underwriters Laboratory (UL)
– UL 10B - UL Standard for Safety Fire Tests of Door Assemblies
– UL 555 - UL Standard for Safety Fire Dampers
– UL 555C - UL Standard for Safety Ceiling Dampers
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 5 of 37
– UL 1863 - UL Standard for Safety Communication Circuit Accessories
– UL 1950 - UL Standard for Safety of Information Technology Equipment
Including Electrical Business Equipment
2.3 Government Regulations
Federal Standards and Instructions of the Occupational Safety and Health
Administration (OSHA) and Americans with Disabilities Act (ADA), including any
additional requirements by state or local agencies that have jurisdiction in the state
where the project is to be constructed, shall apply.
• U. S. Department of Labor, Occupational Safety and Health Administration
(OSHA)
– OSHA 29 CFR Part 1910, Occupational Safety and Health Standards
• U. S. Americans with Disabilities Act (ADA)
– Accessibility Guidelines for Buildings and Facilities
• Federal Communications Commission (FCC)
– Part 68 - Connection of Terminal Equipment to the Telephone Network, Code
of Federal Regulations, Title 47, Telecommunications
3. Definitions
contract documents: Any and all documents that the owner has transmitted or otherwise
communicated, either by incorporation or by reference, and made part of the legal contract
agreement or purchase order agreement between the owner and the contractor
owner: The party who awards the contract. The owner may be the owner or the owner’s
authorized agent.
4. Building Design
In addition to local jurisdiction and government requirements, occupied buildings shall be
designed in accordance with the IBC, OSHA 29 CFR Part 1910 and the ADA unless
otherwise specified in the PIP ARC01016 data sheet or in the contract documents.
Unoccupied buildings and occupied buildings with primarily industrial occupancies shall be
designed in accordance with NFPA 101.
4.1 Occupancy
4.1.1 The occupancy of a building or portion thereof shall be determined by its
intended use.
4.1.2 Industrial occupancies shall be classified in accordance with NFPA 101,
Chapter 40, “Industrial Occupancies.”
4.1.3 Occupied buildings shall comply with the accessibility requirements of the
ADA and local state-required accessibility standards.
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 6 of 37 Process Industry Practices
4.2 Means of Egress
4.2.1 Buildings shall be provided with means of egress in accordance with the
applicable building codes and with ADA.
4.2.3 Industrial occupancies shall meet the egress requirements of NFPA 101 for
“Industrial Occupancies.”
4.3 Foundation and Structure
The foundation and structure of a building shall be designed in accordance with
PIP STC01015. Buildings designed to be blast resistant shall also be designed in
accordance with PIP STC01018.
4.4 Materials and Methods of Construction
The building shall be designed with the materials and methods of construction
appropriate for its occupancy. The type of construction shall be in accordance with
the requirements of the governing building codes.
4.5 Pre-Engineered Metal Buildings
Pre-engineered metal buildings shall be in accordance with PIP ARS13120.
5. Products
Products for buildings shall be designed to meet the minimum requirements specified herein,
unless the contract documents or applicable governing jurisdictions require more stringent
practices.
5.1 Concrete
5.1.1 Concrete design shall be in accordance with PIP STC01015.
5.2 Masonry
5.2.1 Masonry design shall be in accordance with PIP STC01015.
5.3 Metals
5.3.1 Steel design shall be in accordance with PIP STC01015.
5.3.2 Floor and roof deck shall be designed according to SDI Design Manual for
Composite Decks, Form Decks and Roof Decks.
5.3.3 Aluminum design shall be in accordance with AA ADM.
5.4 Woods (and Plastics)
5.4.1 Wood design using allowable stress design shall be in accordance with the
IBC.
5.4.2 Structural lumber shall be grade No.2 or better. Non-structural lumber shall
be grade No. 3 or better.
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June 2002 Architectural and Building Utilities Design Criteria
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5.5 Gypsum Board Assemblies
5.5.1 Interior walls shall be regular-type gypsum board on minimum 22-gage steel
stud framing.
5.5.2 Type X gypsum board shall be used where fire-resistance-rated assemblies
are required. Gypsum board shall be taped and sanded. For gypsum board
assemblies with fire-resistance ratings, materials and construction shall be
provided that are identical to those tested in assembly as indicated according
to ASTM E 119 by an independent testing and inspecting agency that is
acceptable to authorities having jurisdiction.
5.5.3 Fur-outs shall be gypsum board on steel stud framing.
5.5.4 Gypsum board walls shall have a latex enamel painted finish unless
otherwise specified.
5.6 Ceilings
5.6.1 Suspended acoustical ceiling installation shall comply with CISCA’s Ceiling
Systems Handbook.
5.6.2 Suspended ceiling acoustical panels shall comply with ASTM E 1264
classifications as designated by types, patterns, acoustical ratings, and light
reflectance.
5.6.3 Suspended ceiling metal suspension system shall be standard direct-hung
metal suspension systems.
5.7 Flooring
5.7.1 Vinyl flooring shall be solid vinyl tile complying with ASTM F 1700. Vinyl
composition floor tile shall comply with ASTM F 1066.
5.7.2 Access floor systems shall be in accordance with Section 5.11.2 of this
Practice.
5.8 Thermal and Moisture Protection
5.8.1 Unless otherwise specified in the contract documents, occupied buildings
shall be designed in accordance with the ICC IECC. Buildings with
industrial occupancies shall comply with the requirements of the IECC,
unless the process requirements make it impracticable.
5.8.2 Insulation
5.8.2.1 Insulation shall have a flame-spread rating of less than 25 and shall
not be exposed to potential fire areas.
5.8.2.2 Insulation shall be used for separation between roof decks and the
roofing membranes.
5.8.2.3 Insulation shall be provided between conditioned areas and exterior
wall and roofs. R values shall be as required to comply with the
IECC and the local environmental conditions but shall be no less
than R-11 for walls and R-19 for roofs, unless required otherwise in
the contract documents.
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 8 of 37 Process Industry Practices
5.8.3 Roofing Systems
5.8.3.1 Roofing systems shall be designed in accordance with
NRCA ITEM ML 102.
5.8.3.2 Low-slope roofs shall have a minimum slope of 1/4 inch per foot
(21 mm/m).
5.8.3.3 Relief openings shall pass through the parapet. The roof structure
shall be designed for ponding of as much as the height of the relief
openings and with consideration to the deflected shape under the full
load.
5.8.3.4 When equipment or piping is placed on a building roof, a suitable
walking or working surface shall be used to prevent damage to the
roofing.
5.8.3.5 Exposed sides of working area and walkway within 6.0 ft (1800 mm)
of edge of roof shall be protected with standard railings.
5.8.3.6 Equipment shall be mounted a minimum of 8 inches (200 mm)
above the roofline to allow for efficient maintenance and repair of
the roofing material. Equipment supports shall not be constructed of
wood.
5.9 Fire Resistance
5.9.1 Buildings shall be designed for fire resistance in accordance with the IBC,
“Fire Resistant Materials and Construction,” and in accordance with the
IFC.
5.9.2 Industrial occupancy buildings shall meet the requirements of the previous
section, except when the industrial process makes meeting the requirements
impracticable; in such cases these buildings shall as a minimum meet the
protection requirements of NFPA 101.
5.10 Doors and Windows
5.10.1 Personnel doors shall be in accordance with PIP ARS08111.
5.10.2 Door hardware shall be in accordance with PIP ARS08710.
5.10.3 Overhead coiling doors larger than 64 ft2 (6 m2) shall be motorized, unless
specified otherwise. The side rails shall be made from structural steel, not
cold-rolled shapes.
5.10.4 Fire-rated doors shall meet the requirements of NFPA 252, NFPA 80, and
UL 10B.
5.10.5 Blast-resistant doors shall be designed in accordance with PIP STC01018
and shall be provided with automatic door closures.
5.10.6 Windows shall not be provided in buildings within 200 ft (60 m) of
hazardous process facilities unless otherwise required by the owner and
permitted by applicable fire safety and building codes.
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 9 of 37
5.11 Specialties
5.11.1 Exterior Louvers
5.11.1.1 Louvers shall be all-welded construction with drainable blades to
minimize water penetration while maintaining a high free area.
5.11.1.2 Louvers shall be designed with a frame that includes a jamb gutter,
a recessed drip lip at the head, and an extended water stop on the
back of the sill.
5.11.1.3 Louvers shall meet the requirements of AMCA 511 and shall bear
the AMCA-certified rating seal for both air performance and water
penetration.
5.11.2 Access Floors
5.11.2.1 Panels and support systems shall be in accordance with CISCA-
Recommended Test Procedure for Access Floors.
5.11.2.2 Floor panels without coverings shall have a Class “A” flame-spread
rating when tested in accordance with ASTM E84.
5.11.2.3 Floor height shall be 24 inches (600 mm) unless otherwise
specified in the PIP ARC01016 data sheet.
5.11.2.4 The supporting system shall be a commercial heavy duty, bolted
grid system, shall be free from vibration squeaks, shall be designed
to support the equipment that will be located on the access flooring
system, and shall be resistant to seismic loads in accordance with
PIP CVC01017. The floor system shall support the following
minimum loads:
a. Static: 1000 lb (4.5 kN), concentrated
b. Dynamic:
• 1000 lb (4.5 kN) rolling load for 3-inch diameter x
1-13/16-inch wide (75-mm diameter x 46 mm) with
10 passes
• 500 lb (2.25 kN) for 6-inch diameter x 1-1/2-inch wide
(150-mm diameter x 38 mm) with 10,000 passes
c. Impact load: 250 lb (1.12 kN)
5.11.2.5 The entire flooring system shall be electrically grounded.
5.11.3 Toilet Compartments and Urinal Screens
5.11.3.1 Materials shall be commercial heavy duty, non-permeable, non-
corrosive, and stain resistant.
5.11.3.2 Compartment doors shall be a minimum of 24 inches (600 mm)
wide.
5.11.3.3 Each compartment shall be provided with a coat hook, paper
holder, and door latches.
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
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5.11.3.4 Screw and bolt heads shall match accessory finish and shall be non-
removable and vandal-resistant.
5.11.4 Restrooms
5.11.4.1 Restrooms shall be provided with soap dispensers, paper towel
dispensers, waste receptacle, mirrors, and a shelf for personal
items. Materials shall be commercial, heavy duty, and non-
corrosive.
5.11.4.2 Anchors shall be concealed and shall be made of nonferrous metal
or stainless steel.
5.11.5 Laboratory Casework
5.11.5.1 Countertops shall be constructed to resist chemical, moisture,
physical abuse, and acid splatters and shall be resistant to damage
from heavy instruments and abrasive cleaners.
5.11.5.2 Casework components shall withstand the following minimum
loads without damage to the components or to the casework
operation:
a. Base unit load capacity 500 plf (7.3 kN/m)
b. Suspended units 300 plf (4.4 kN/m)
c. Drawers in cabinets 150 lb (0.7 kN)
d. Utility tables (four-leg) 300 lb (1.4 kN)
e. Hanging wall cases 300 lb (1.4 kN)
f. Capacity for shelves of units 150 lb (0.7 kN)
5.11.5.4 Casework shall be of flush construction with the surface of doors,
and drawers and panel faces shall be flush with the cabinet fronts,
ends, and rails.
5.11.5.5 Base cabinets with double swinging doors shall provide full access
to the interior without center vertical post.
5.11.5.6 Drawers shall be rated for 150-lb (0.7-kN) load capacity at full
extension. Drawers shall be sound-deadened, and all corners shall be
fitted smoothly.
5.11.6 Laboratory Fume Hoods
Fume hoods shall be in accordance with NFPA 45.
5.12 Conveying Systems
Elevators, escalators, and dumbwaiters shall be designed in accordance with
ASME A17.1.
PIP ARC01015
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6. Building Utilities
6.1 Heating, Ventilation, and Air Conditioning (HVAC)
6.1.1 Design Criteria
6.1.1.1 Climatic Conditions
6.1.1.1.1 Climatic condition values shall be based on values given
in the ASHRAE Fundamentals IP unless site specific
design temperatures are specified on the PIP CVC01017
data sheet.
6.1.1.1.2 For all HVAC systems, cooling load shall be calculated
with the summer design dry bulb (0.4%) and mean
coincident wet bulb temperatures, and the supply air
requirements shall be determined at these temperatures.
6.1.1.1.3 For HVAC systems that have more than 20% outside air
make-up, in addition to the cooling load calculations
performed as specified in Section 6.1.1.1.2, the cooling
load shall also be calculated at the design wet bulb (0.4%)
and mean coincident dry bulb temperature to determine
which set of conditions results in larger HVAC system
capacity. This will determine the cooling capacity of the
refrigeration system. The airside capacity shall be as
determined from Section 6.1.1.1.2.
6.1.1.1.4 For the selection of air-cooled packaged units, air-cooled
condensers, and air-cooled condensing units, the summer
design dry bulb (0.4%) temperature shall be used.
6.1.1.1.5 Heating load shall be calculated using the 99.6% heating
dry bulb temperature.
6.1.1.2 Indoor Design Conditions
6.1.1.2.1 Table 6.1A describes the minimum indoor conditions to be
used for the design of HVAC systems, unless otherwise
specified in the contract documents.
6.1.1.2.2 Design conditions for other occupancies shall comply with
recommendations of the ASHRAE Fundamentals IP
applicable health and safety codes, and equipment
manufacturers’ requirements.
6.1.1.2.3 HVAC systems shall be capable of maintaining dry bulb
and relative humidity within the performance range given
in Table 6.1A.
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Architectural and Building Utilities Design Criteria June 2002
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6.1.2 Load Calculation
6.1.2.1 General Requirements
6.1.2.1.1 HVAC load calculations shall be based on
ASHRAE Fundamentals IP methods and shall include 5%
but not more than 10% excess capacity (sensible, latent, or
heating) as safety factors. Residential method, preferably
total equivalent temperature differential with time
averaging (TETD/TA) shall be used only for residential
application.
6.1.2.1.2 Overall building cooling and heating loads shall be
calculated. Zoning, exposure, and building mass shall be
considered in heating and cooling calculations. The air-
conditioning system shall provide comfortable conditions
in all rooms throughout the operating period in accordance
with Table 6.1A. Each zone, portion of a zone, and room
with different load profiles, orientations, or sensible loads
shall be calculated. A separate block load for each air-
handling system shall also be calculated.
6.1.2.2 Cooling Loads
6.1.2.2.1 Cooling load calculations shall consider all sensible and
latent heat sources.
6.1.2.2.2 Sensible cooling load shall be calculated for building
envelope, people, lights, equipment, interior non-
conditioned spaces, duct and plenum gains, and outside air
that is introduced into the system by air make-up or
infiltration.
6.1.2.2.3 Latent cooling load shall be calculated for people, outside
air, and any process in which moisture is released to the
air.
6.1.2.2.4 Outside air requirements shall be carefully evaluated for
the building pressurization in accordance with NFPA 496.
6.1.2.3 Heating Loads
Loads shall include heat losses from building envelope, interior non-
conditioned spaces (partitions, ceilings, floors), duct and plenum
losses, and outside air that is introduced into the system by make-up
air and infiltration. Final discharge temperatures shall range between
85ºF (30ºC) and 110ºF (43ºC).
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6.1.3 System Considerations
6.1.3.1 Zoning
In buildings with separate interior and perimeter rooms, each room
or group of rooms (except for unoccupied spaces) having a
distinctive load profile shall have individual temperature control.
6.1.3.2 Air System Design
6.1.3.2.1 Air distribution systems shall be designed in accordance
with ASHRAE Fundaments IP, “Duct Design” section.
Supply air ductwork shall be designed for a maximum
pressure drop of 0. 1 inch wg per 100 ft (0.82 Pa/m) where
space conditions allow. Return, general exhaust, and
outside air duct shall be sized for a maximum pressure
drop of 0.08 inch wg (0.65 Pa/m) where space conditions
allow.
6.1.3.2.2 Non-general exhaust duct sizing criteria shall be in
accordance with ACGIH 2090.
6.1.3.2.3 All ductwork and fittings shall be fabricated in accordance
with the latest edition of the SMACNA HVACMF and
according to the static pressure expected to be encountered
in the system. Flexible duct shall not be used for return or
exhaust systems. When flexible ducts are used for supply
air, they shall not exceed 8.0 ft (2400 mm) in length.
6.1.3.2.4 Manufacturer’s standard diffusers, registers, and grilles
shall be used.
6.1.3.2.5 A volume damper shall be provided in each branch duct
serving a separate zone or room. Splitter dampers shall not
be used for duct branch take-offs.
6.1.3.2.6 Volume dampers shall be provided ahead of flexible duct
serving supply air grilles, registers, and diffusers.
6.1.3.2.7 Fresh air intakes shall be designed and situated to
minimize dust intrusion.
6.1.3.2.8 Outside air intakes shall not be closer than 10 ft
(3000 mm) from an appliance vent outlet, a vent opening,
or a plumbing drainage system or discharge outlet of an
exhaust fan unless the outlet is 5 ft (1500 mm) above the
outside air intake.
6.1.3.2.9 Return air shall be drawn through ceiling plenum,
whenever practical. Where cable trays are situated inside
the ceiling plenum, evaluate using ducted return air system
rather than plenum-rated cables. No air-conditioning
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
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equipment rooms shall be used as return air plenums when
building is pressurized in accordance with NFPA 496.
6.1.3.2.10 Outside air intake ducts shall have combustible gas and
fire/smoke detectors to detect the presence of flammable
gas/vapors and/or smoke in buildings in NEC-classified
areas. An alarm shall occur when detecting greater than
10% lower flammable limit. The air intake blowers shall
shut down and the damper shall close automatically if the
detector detects more than 25% of the lower flammable
limit.
6.1.3.3 Control Systems
6.1.3.3.1 HVAC systems shall be designed and installed using
commercially available equipment and techniques to
control temperature and, when required, humidity,
pressure, and air quality. All thermostats shall be manually
adjustable over the operating range.
6.1.3.3.2 Fire dampers shall be installed in accordance with
NFPA 101. HVAC units shall automatically shut down
when fire alarm system is activated, in accordance with
NFPA 90A and NFPA 101 unless the building is always
manned (e.g., control building). In this case, a manual
shutdown switch shall be provided.
6.1.3.4 Piping and Coils
6.1.3.4.1 The location of air-conditioning equipment components
shall account for piping and equipment pressure drop, area
classification, and equipment clearance requirements.
Access space shall be provided for the removal of any coil
or other equipment component, in accordance with
equipment manufacturer’s recommendation.
6.1.3.4.2 Multiple compressor refrigerant piping shall be
interconnected in accordance with manufacturer’s
recommendations. For any split condenser/compressor or
compressor/evaporator unit separated by more than 10 ft
(3000 mm), refrigerant lines shall be sized in accordance
with ASHRAE Refrigeration IP, “Refrigerant Line Sizing”
section.
6.1.3.5 Humidity Control
6.1.3.5.1 Where humidification is required, humidifiers shall be
steam- or ultrasonic-type humidifiers and have water
blowdown capability to minimize solids buildup. A high-
limit duct humidistat shall be used to limit moisture
carryover and condensation in the duct. Normal control
shall be by a return air or space humidistat.
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6.1.3.5.2 High humidity control shall be accomplished by use of the
cooling coil. The humidistat shall override the thermostat
and cooling with re-heating as required to maintain space
temperature.
6.1.3.6 Ventilation and Exhaust
6.1.3.6.1 All enclosed portions of buildings customarily used by
occupants shall be provided with fresh ventilation air. The
minimum amount of outside air shall either equal
10 percent of supply air in excess of all exhaust air or
equal the ventilation air requirements listed in Table 6.1B
of ASHRAE 62, whichever is greater.
6.1.3.6.2 The Toilet, locker, and shower rooms shall be provided
with a mechanically operated exhaust system capable of
providing as a minimum the ventilation requirements of
ASHRAE 62. The system shall exhaust directly to the
outside, and the point of discharge shall be at least 5 ft
(1500 mm) from any openable window or door and 3 ft
(915 mm) above and 10 ft (3000 mm) away from any air
intake.
6.1.3.6.3 Occupied, non-air-conditioned enclosed spaces shall have
mechanically forced ventilation. The ventilation airflow
rate shall be established to ensure that space temperature
does not exceed the ambient outdoor temperature by more
than 10ºF, or 5.5ºC. Inlet air intakes shall be designed to
minimize dust intrusion.
6.1.3.6.4 Buildings or portions thereof where flammable or toxic
materials are used shall be for the required ventilation rate
according to ACGIH 2090. Exhaust ventilation shall be
taken from a point at or near the floor level for gases
heavier than air and from near the ceiling level for gases
lighter than air.
6.1.3.6.5 Ventilation for special applications shall be in accordance
with ACGIH 2090.
6.1.3.6.6 Every automotive-type garage, where vehicles operate
under their own power, shall either have a mechanical
exhaust system or have permanent openings to the outside.
6.1.3.7 Noise
6.1.3.7.1 Acceptable HVAC-related background sound for an
occupied room shall conform to the guideline criteria
specified in ASHRAE Applications IP.
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6.1.4 Special Applications
6.1.4.1 Chemical Laboratories
6.1.4.1.1 Design and operation of HVAC systems in chemical
laboratories shall be in accordance with the latest edition
of the following:
• ASHRAE 62
• ASHRAE - Applications IP, chapter on laboratories
• ACGIH 2090
• NFPA 45
• NFPA 90A
• NFPA 91
• ASHRAE 110
6.1.4.1.2 Air from laboratory work areas shall be continuously
discharged to the outdoors, and the area shall be
maintained at a negative pressure relative to the adjacent
areas. Air from laboratory work areas shall not be
recirculated.
6.1.4.1.3 Ductwork, hoods, fans, drives, and other system
components shall be designed and selected to meet fire,
explosion, corrosion, and acid-resistant requirements as
required.
6.1.4.1.4 Automatic fire dampers shall not be used in laboratory
hood exhaust systems. Fire detection and alarm systems
shall not be interlocked to automatically shut down
laboratory hood exhaust fans.
6.1.4.1.5 Fume hood exhaust shall be designed in accordance with
the latest edition of IMC and ACGIH 2090.
6.1.4.1.6 Airflow indicators shall be installed on new laboratory
hoods or on existing laboratory hoods, when modified, in
accordance with the requirements of NFPA 45.
6.1.4.2 Essential Operating Facilities
6.1.4.2.1 Essential operating facilities include rack rooms, computer
rooms, control rooms, communication equipment rooms,
and any other buildings housing electrical equipment and
control systems that are vital in the production,
processing, and transportation of the process.
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6.1.4.2.2 Buildings such as office buildings, maintenance facilities,
dining halls, etc., are excluded from the requirements of
this section.
6.1.4.2.3 In the case of pressurized buildings, the maximum amount
of outside air supplied to pressurize the building during
normal operation with all doors and windows closed shall
be used in HVAC load calculations.
6.1.4.2.4 100% capacity of cooling and heating standby systems
shall be provided for the essential operating facilities.
6.1.4.2.5 In buildings located in Class I, Division 2 electrical areas,
the HVAC system, alarms, and controls shall be designed
to prevent the entry of flammable vapors or gases in
accordance with the requirements of NFPA 496, in the
section titled “Pressurized Control Rooms.”
6.1.4.2.6 Outside air for pressurization shall take into account all air
exhausted from the space, including all exhaust fans as if
operating on a continual basis, even if all exhaust fans do
not operate continuously.
6.1.4.2.7 Any HVAC equipment in hazardous areas shall be suitable
for operation in the area classification in which it is
located.
6.1.4.2.8 Outside air for pressurization of buildings in classified
areas shall be taken from an unclassified area.
6.1.4.2.9 In pressurized buildings, the exterior envelope shall be
designed to be as air tight as practical. Air-locked
vestibules shall be provided at the building entrance doors.
6.1.4.2.10 A 100% standby fan shall be provided for buildings with
pressurization systems.
6.1.4.2.11 Outside air supply ducts for buildings inside or near an
operating process plant shall have combustible gas
analyzers to detect the presence of flammable gas/vapors
in the air intake. An alarm shall occur when analysis
detects greater than 10% of the lower flammable limit.
The air intake blowers shall shut down automatically if the
analyzer detects more than 25% of the lower flammable
limit. Dampers shall automatically close when the blowers
shut down.
6.1.4.3 Battery Rooms
6.1.4.3.1 Battery rooms shall be ventilated to the outside of the
building at a minimum rate of one air change every
3 hours, unless a higher exhaust airflow rate is required
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because of the discharge of cooling air that cannot be
recycled from the room.
6.1.4.3.2 Air shall not be recycled from battery rooms. Where
batteries are inside the electric/UPS rooms, if analysis
reveals that H2 evolution is less than 2% of the room
volume while charging, once-through air system is not
required; however, a local exhaust system over the battery
area shall be provided.
6.1.4.3.3 The bottom of the supply air outlet into the battery room
shall not be higher than 6 inches (150 mm) above the
floor, and the exhaust opening shall be in the ceiling or its
upper edge and shall be flush with the ceiling if the
exhaust opening is in a wall. Air inlets and outlets shall be
located to provide effective cross ventilation over the
batteries.
6.1.4.4 Chemical Filtration
In all buildings containing electronic equipment, the concentration
of corrosive gases shall be limited to the G1 environmental
classification level defined in Table 6.1B. When it is confirmed that
the concentration of corrosive gases in the local plant environment
will exceed the G1 classification level, chemical filters shall be
provided that limit to the G1 classification level the concentration of
gases inside the rooms containing the electronic equipment.
Activated charcoal shall be used unless otherwise specified in the
PIP ARC01016 data sheet.
6.1.4.5 Dust Filters
Dust filters shall be equipped with pre-filters and final filters. The
pre-filters shall have a minimum of 25% efficiency, and the final
filters shall provide a minimum of 85% dust spot efficiency, as
defined by ASHRAE standards. The selected filters shall be easily
available locally.
6.1.4.6 Insulation
6.1.4.6.1 All supply and return air ducts, located outdoors or
exposed to unconditioned air, shall be insulated.
6.1.4.6.2 Insulation is not required for return air ducts in a ceiling
space where both sides of the ceiling space are exposed to
conditioned air and where the ceiling space is not used as
a return air plenum.
6.1.4.6.3 Supply air ducts in return air plenums shall be insulated.
6.1.4.6.4 Supply air ducts in conditioned space and return air ducts
in return air plenums shall be insulated.
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6.1.4.6.5 Internal duct lining shall not be used, except in
acoustically sensitive areas.
Exception: Internal lining that includes protective
coating to prevent erosion is permitted for
terminal boxes and air-handling units.
6.1.4.6.6 Refrigerant suction lines shall be insulated from the
evaporator to the compressor. Condensate line shall be
insulated from the unit to the drain location.
6.1.4.7 Dampers
6.1.4.7.1 Each branch duct serving a separate zone or room shall
have a volume damper. Branch duct dampers shall be
sheet metal opposed blade type, using pivot and rod, with
locking quadrant damper.
6.1.4.7.2 Fire dampers shall bear the UL label. Fire dampers shall
be securely mounted in a rated fire separation wall,
ceiling, or floor, such that ducts can break away without
lessening fire separation rating. Fire and smoke dampers
shall be manufactured in accordance with UL-555 or
UL-555C and installed in accordance with
SMACNA FSRDI. For HVAC systems, inspection doors
shall be provided to allow access to all fire dampers.
6.1.4.7.3 Combination smoke/fire dampers shall meet all
requirements for smoke damper fire alarm closure and fire
damper latching.
6.1.5 Installation
6.1.5.1 All air handlers, refrigeration condenser units, pumps, or any
equipment mounted outside, shall be mounted on a concrete
housekeeping pad, at a minimum of 4 inches (100 mm) above the
floor or pavement or 6 inches (150 mm) above surrounding unpaved
areas.
6.1.5.2 Access doors shall be provided to every valve, damper, or
mechanical device that requires periodic inspection or adjustment.
Access doors for fire dampers shall be positioned so that dampers
can be reset and fusible links can be replaced.
6.1.5.3 A minimum of 3-ft (900-mm) clearance shall be provided on each
side of equipment with openable panel or controls, unless otherwise
required by equipment manufacturer. Adequate space shall be
provided for coil removal.
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6.1.5.4 All HVAC equipment shall be properly grounded in accordance with
NFPA 70.
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June 2002 Architectural and Building Utilities Design Criteria
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Table 6.1A - HVAC Room Descriptions and Design Criteria
Room Name Room Functions Description
Thermostat-
Setting Temp.
(dB)
F° / C°
% Relative
Humidity
Pressure
Relative to
Atmosphere
Air
Quality Remarks
Battery Rooms Contains battery system. Not normally
occupied.
77°F/26°C
summer
72°F/ 22°C
winter
N/A Negative
pressure to
the rest of the
building
As req’d
for gas
removal
These rooms are sometimes
classified for electrical
installations.(i.e., Class I,
Division 2)
Break Rooms Generally house a sink, microwave, or other
kitchen-type appliance. Generally have table(s)
and chairs for people to sit and eat. Break
rooms may or may not also have vending
machines. Occasionally occupied spaces.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Coffee/Vending
Rooms
Contain vending machines and/or coffee
machines. May also have microwaves. These
rooms are distinguished from break rooms in
that they do not generally have tables, chairs,
or sinks. Not normally occupied spaces.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Change Rooms Areas for personnel to change clothes and may
include lockers and lavatories. They may be
part of or adjacent to restrooms or shower
rooms. Occasionally occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
Negative
pressure to
the rest of the
building
ASHRAE
Std. 62
Communications
Closets
Contain communications equipment, cable
terminations, and associated cross-connect
cable/wiring. Not normally occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
N/A See Notes 2 and 3 for additional
requirements.
Communications
Computer
Rooms
Contain programming applications, electronic
equipment such as servers, switches, hubs,
and routers. Occasionally occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
ISA
71.04
See Note 3 for additional
requirements.
Communications
Equipment
Rooms
Contain programming applications and
electronic equipment such as servers,
switches, hubs, and routers Occasionally
occupied.
75°F/ 24°C
summer
72°F/ 22°C
winter
50%
± 10%
+0.10”
(25 Pa)
ISA
71.04
See Note 3 for additional
requirements.
Computer
Rooms
Mainly house computers and associated
equipment. May be considered either normally
or not normally occupied space, depending on
the project specific use.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
ISA
71.04
See Note 2 for additional
requirements.
(Continued, next page)
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Room Name Room Functions Description
Thermostat-
Setting Temp.
(dB)
F° / C°
% Relative
Humidity
Pressure
Relative to
Atmosphere
Air
Quality Remarks
Table 6.1A, continued
Conference
Rooms or
Auditorium
Occasionally occupied. When occupied, these
spaces may have a lower square foot per
person average than do normally occupied
spaces.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Control Rooms Contain control consoles. Normally occupied. 75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
ISA
71.04
Copy/Fax Rooms Separate walled-in rooms for housing copy
and/or fax machines. Not normally occupied.
For HVAC design purposes, any normally
occupied space listed as a copy/fax room
should be treated as an office space.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
N/A
Electrical/
Telephone/
Radio Rooms
Specifically for housing electrical, telephone, or
radio equipment. Distinguished from
mechanical room because they specifically
house electrical/telephone/radio equipment.
Not normally occupied.
80°F/26°C
summer
50°F/10°C
winter
or as required by
equipment
manufacturer
50%
± 10%
or as required by
equipment
manufacturer
+0.05”
(12.5 Pa)
N/A
HVAC/
Mechanical
Rooms
Contain HVAC equipment and/or other types of
equipment such as pumps, water heaters,
electrical equipment, etc. Not normally
occupied spaces.
80°F/26°C
50°F/10°C
N/A +0.05”
(12.5 Pa)
N/A
Janitor’s Closets Have a service sink and provide storage for
various cleaning supplies. Not normally
occupied spaces.
80°F/26°C
summer
50°F/10°C
winter
50%
± 10%
Negative
pressure to
the rest of the
building
N/A
Libraries and
Reading Areas
Contain reference books, magazines, papers,
or other types of reading materials. They are
distinguished from file/record storage because
the reading materials are meant to be accessed
on a regular basis. Normally occupied spaces.
75°F/24°C
summer
72°F/ 22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
(Continued, next page)
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Room Name Room Functions Description
Thermostat-
Setting Temp.
(dB)
F° / C°
% Relative
Humidity
Pressure
Relative to
Atmosphere
Air
Quality Remarks
Table 6.1A, continued
Lobbies and
Corridors
Generally open areas at the main entrance to a
building and may include waiting areas and
receptionists desks. Corridors, also known as
circulation, are hallways connecting various
rooms in a building. Corridors are considered
not normally occupied. Lobbies may be
considered either normally or not normally
occupied spaces.
75°F/24°C
summer
72°F/22°C winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Offices Space occupied by one or more persons and
used for office-type work
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Plot/Printing
Rooms
Areas used for plotters and printers 75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
I/O Rooms Contain I/O equipment. Not normally occupied. 75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
ISA
71.04
Record/File
Rooms
Storage areas for files and records. Not
normally occupied. For HVAC design purposes,
any normally occupied space listed as a
record/file room should be treated as an office
space.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
N/A
Restrooms Rooms having one or more of the following:
1. Water closet
2. Urinal
3. Lavatory
4. Bidet
Considered occasionally occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
Negative
pressure to
the rest of the
building
ASHRAE
Std. 62
(Continued, next page)
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Room Name Room Functions Description
Thermostat-
Setting Temp.
(dB)
F° / C°
% Relative
Humidity
Pressure
Relative to
Atmosphere
Air
Quality Remarks
Table 6.1A, continued
Shower Rooms Areas for showering or bathing. They may be
part of or adjacent to restrooms and/or change
rooms. Considered occasionally occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
Negative
pressure to
the rest of the
building
ASHRAE
Std. 62
Storage Rooms/
Spaces
Areas for general storage that do not fall into
the category of file/record rooms or any other
specific type of storage area such as solvent or
chemical storage. Not normally occupied
spaces.
80°F/26°C
summer
50°F/10°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
N/A
Switchgear
Rooms/MCC
Rooms
Contain all switchgear and MCC equipment
such as transformer, breakers, starters, and
panel boards. Not normally occupied.
77°F/26°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
N/A
UPS Room Contains UPS equipment and/or battery
charger. Not normally occupied.
77°F/26°C
summer
72°F/22°C
winter
50%
± 10%
+0.10”
(25 Pa)
N/A
Training Rooms Areas for training classes and may also be
used as a meeting room. They are
distinguished from conference rooms in that
these rooms are occupied on a regularly
scheduled basis and are considered normally
occupied.
75°F/24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Waiting Rooms Separate walled-in rooms (as distinguished
from waiting areas in a lobby). Occasionally
occupied.
75°F/ 24°C
summer
72°F/22°C
winter
50%
± 10%
+0.05”
(12.5 Pa)
ASHRAE
Std. 62
Definitions:
1. Normally occupied - Any space or room in which a person or persons are assigned to be on a day-to-day basis
2. Not normally occupied - Any space or room in which a person or persons is not assigned on a day-to-day basis
3. Occasionally occupied - Any space or room in which a person or persons is not assigned on a day-to-day basis but at times may be fully occupied
Notes:
1. The number values in this table shall be used unless otherwise specified by the owner.
2. Rooms contain non-active equipment; room temperature shall be maintained at 50°F (10°C) to 95°F (35°C), and humidity shall be below 85%.
3. EIA/TIA 569-A
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Table 6.1B. ISA Classification
Gas Concentrations (Parts per Billion, by Volume)
H2S SO2 , SO3 Cl2 NOx HF NH3 O3
ISA Class G1 ≤3 ≤10 ≤1 ≤50 ≤1 ≤500 ≤2
Note: ISA environmental classes, relative humidity <50%
6.2 Electrical Work
6.2.1 General
All electrical work shall be in accordance with this Practice and local, state,
and national codes unless otherwise required by contract or law.
6.2.2 Codes and Standards
6.2.2.1 Electrical work shall be in accordance with NFPA 70 (NEC).
6.2.2.2 Equipment, apparatus, or material required to be approved shall be
approved by a nationally recognized testing laboratory.
6.2.3 Hazardous Areas
The electrical hazardous area classification for the buildings shall be defined
on the electrical area classification drawings.
6.2.4 Lighting
6.2.4.1 Building exterior electrical lighting and interior electrical lighting
shall be provided unless otherwise specified in the PIP ARC01016
data sheet. Indoor lighting shall be incandescent, fluorescent, or
high-intensity discharge unless otherwise specified in the
PIP ARC01016 data sheet. Illumination levels shall be in accordance
with API RP 540.
6.2.4.2 For occupied buildings, interior lighting shall include egress lighting
and exit sign lighting with a secure power supply. A battery charger
with a battery or an uninterruptible power supply (UPS) sized for a
minimum of 90 minutes is the only acceptable secure power supply.
6.2.4.3 Lighting for each room shall be separately controlled by a general
purpose snap-type switch located on the wall near each door entering
the room.
6.2.5 Power
6.2.5.1 Unless otherwise specified in the PIP ARC01016 data sheet, power
source for the building shall be a single 480-volt, 3-phase, 3-wire
plus ground, 60-Hertz feeder brought to a point to be designated by
the owner. This feeder is not a service unless so specified by the
owner. The building shall be provided with transformers,
panelboards, and other equipment as required to distribute power to
all building lighting, receptacles, HVAC equipment, and other utility
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equipment. All equipment shall be located indoors except for
transformers larger than 500 kVA.
6.2.5.2 All transformers inside buildings shall be dry type.
6.2.5.3 There shall be 120-volt, 2-pole, 3-wire, grounding receptacles
supplied from 1-phase, 2-wire plus ground, 120-volt, 60-Hertz
branch circuits in every room as would be required by the NEC if the
room were part of a dwelling unit. Additional receptacles shall be
provided for any cord-and-plug-connected building utility
equipment. All receptacles shall be grounding type.
6.2.6 Grounding
6.2.6.1 Grounding shall comply with NEC requirements. Special grounding
shall be provided when specified in the PIP ARC01016 data sheet. A
grounding wire shall be provided with the building power feeder,
which shall be bonded to the building grounding system.
6.2.6.2 Circuits shall have ground fault protection when required by
NFPA 70 (NEC).
6.2.7 Lightning Protection
Proper grounding is the primary method of lightning protection.
6.2.8 Wiring Methods
6.2.8.1 Interior wiring shall be in electrical metallic tubing (EMT) and
flexible metallic tubing unless otherwise specified in the contract
documents. Exterior wiring shall be in rigid galvanized steel conduit
and liquid-tight flexible metal conduit unless otherwise specified in
the contract documents.
6.2.8.2 All conductors shall be copper.
6.2.8.3 Wiring in rooms with finished walls and ceilings shall not be
exposed.
6.2.9 Special Electrical Rooms
Rooms primarily intended for electrical power equipment shall have locks on
all doors.
6.2.10 Energy Management and Conservation
6.2.10.1 Electrical equipment, apparatus, and lighting shall be energy
efficient and meet the requirements of IECC.
6.2.10.2 Exterior lights shall be controlled by photocells unless otherwise
specified.
6.2.11 Accessibility
Receptacle control switches and electrical equipment shall be readily
accessible to all potential occupants of the room in accordance with ADA.
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6.3 Communications
6.3.1. General
This communication design criteria section is intended to be used in
conjunction with the following codes and standards:
• IEEE 1100
• FCC, Part 68
• NFPA 70
• NFPA 72
• NFPA 75
• NFPA 232
• NFPA 2001
• TIA/EIA-568-B
• TIA/EIA-569-A
• TIA/EIA-570-A
• TIA/EIA-606
• TIA/EIA-607
• UL 1863
• UL 1950
6.3.1.1 This section specifies requirements for communication rooms
including the following:
• Communications closet
• Communications equipment room
• Communications computer room
• Communication entrance facilities and entrance room
6.3.1.2 The communications room can contain the equipment used in
multiple communication systems: telephone, site access, security,
hotlines, closed circuit television, bar coding, weather monitoring,
etc.
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6.3.2 Room Descriptions
Figure 6.3 A. Communication Room Arrangements
6.3.2.1 Communications Closets
The communications closet contains communications equipment,
cable terminations, and associated cross-connect cable/wiring.
Communications closets serve one floor area of one building.
Communications closets can be shallow for non-active equipment or
walk-in for active equipment.
6.3.2.2 Communication Equipment Rooms
A communications equipment room provides space and maintains a
suitable operating environment for large communications or
computer equipment. Equipment rooms serve a building or multiple
buildings. An equipment room may also serve as a communications
closet.
6.3.2.3 Communications Computer Rooms
The communications computer room contains programming
applications, electronic equipment such as servers, switches, hubs,
and routers that directly effect the business operations. This room
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 29 of 37
shall be provided with environmental control and monitoring as
required to protect the communications equipment. Rooms
associated with the communications computer room shall be
adjacent to qualified personnel. All buildings in a campus will
connect with this one room.
6.3.2.4 Communication Entrance Facilities
6.3.2.4.1 The entrance facility consists of the communications
service entrance to the building, including the entrance
through the building wall, and continuing to the entrance
room or space. The entrance room can be the
communications closet, equipment room, and in some
cases the communications computer room.
6.3.2.4.2 With small diameter 0.5-inch (12-mm) cables such as
optical fiber and coaxial cable 2-inch (50-mm) conduits
shall be used. With larger diameter cables, such as multi-
pair copper cables and innerduct, 4-inch (100-mm)
conduits shall be used.
6.3.2.4.3 As a minimum, two 4-inch (100-mm) conduits—with at
least one spare 4-inch (100-mm) conduit—shall be
considered for each entrance point. In addition, three
2-inch (50-mm) conduits shall also be considered.
6.3.2.4.4 A separate communications closet, or communications
equipment room, on the same floor as the entrance facility
shall be provided for buildings with a communications
computer room.
6.3.3 Building Facility
6.3.3.1 Buildings shall be served by at least one communications closet or
equipment room, with a minimum of one communications closet per
floor. There is no maximum number of telecommunications closets
that may be provided within a building.
6.3.3.2 Communication rooms shall not be shared with other services nor
shall these rooms contain non-communications-related equipment.
Piping, ductwork, pneumatic tubing, etc., other than for sprinkler
systems, shall not pass through communication rooms.
6.3.3.3 All communications rooms shall be fitted with a locking mechanism
to prevent the entry of unqualified personnel.
6.3.3.4 The communications closet and equipment rooms shall be located as
close as possible to the center of the floor space being served, away
from any threat of potential flooding.
6.3.3.5 The communications rooms shall not be below or adjacent to rooms
that store or require running water. Avoid locations that are water
hazards such as restrooms, break rooms (with sinks), and kitchens. If
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 30 of 37 Process Industry Practices
the communications closet is at risk of water ingress, a floor drain
shall be installed.
6.3.3.6 In buildings that have a computer room, the communications closet
or equipment room shall be adjacent.
6.3.3.7 In qualifying the communications room location, other key factors
such as distances from required utilities, expansion of
communication systems, building access for large equipment, and
the distance limitations of the cable being installed for service must
be considered.
6.3.3.8 Communication rooms shall not be located in any place that may be
subject to equipment and other heavy machinery that causes
vibration.
6.3.3.9 Sources of electromagnetic interference (EMI) shall be 10 ft
(3000 mm) away from the communications equipment room and
computer rooms. Examples of EMI sources include photocopying
equipment, door openers, elevator systems, factory equipment, etc.
6.3.4 Room Criteria
6.3.4.1 Floor materials for communications rooms shall have antistatic
properties. Carpet shall not be used.
6.3.4.2 Computer rooms shall have access floors unless otherwise specified
in PIP ARC01016 data sheet.
6.3.4.3 Windows shall not be provided in communications rooms except as
required for cable entry.
6.3.4.4 Communications rooms shall not be shared with other services nor
shall these rooms accommodate pass-through of non-
communications-related services such as piping, ductwork,
pneumatic tubing, etc., except as required to service the room.
6.3.4.5 Lighting shall be mounted at an 8.5-ft (2600-mm) minimum above
finished floor. Lighting shall not provide radio frequency
interference (RFI) that could interfere with the communications
equipment. Light fixture power shall not be from the same electrical
distribution panel as that of the communications equipment.
Computer areas shall be provided with emergency lighting.
6.3.4.6 Communications closets with active equipment and communications
equipment rooms shall have a minimum of two dedicated 120-volt
receptacle circuits. For convenience, duplex outlets shall be placed
at 6-ft (1800-mm) intervals at a height of 6 inches (150 mm) above
the floor and shall be identified and marked.
6.3.4.7 A dedicated power panel, serving power to communications
equipment only, shall be installed. If the building has standby power,
it shall be designed for the communications equipment room
requirements including HVAC. Distribution panels that serve
lighting fixtures shall not serve communications equipment.
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 31 of 37
6.3.4.8 Communications computer rooms shall have a guarded push button
at each door that initiates disconnection of power from specified
equipment. This equipment includes computer room electronic
equipment, servers, switches, hubs, etc. The operation of a push
button shall close the fire/smoke dampers on the HVAC system.
6.3.4.9 Electrical power for the communications computer room shall be
supplied from a minimum of two dedicated power panels.
a. One panel shall be for receptacles.
b. The second panel shall be for the junction boxes in the under-
floor area. (A minimum of four dedicated 120-volt nominal,
single-phase, non-switched, air-conditioning duplex electrical
outlet receptacles, each on a separate 20-amp-branch circuit,
shall be provided.)
6.3.4.10 The standby power for the buildings shall be designed to include the
communications computer room equipment and HVAC systems.
6.3.5 Room Size
6.3.5.1 Additional communications closets shall be provided for each
10,000 ft2 (1000 m2) of building area and where a work area is more
than 300 ft (91 m) from the closet or where the floor area served
exceeds 10,000 ft2 (1000 m2).
6.3.5.2 Shallow communications closets shall be a minimum of 24 inches
deep x 8 ft, 6 inches wide (600 mm x 2600 mm). Walk-in
communications closets shall be a minimum of 4 ft, 6 inches deep x
4 ft, 6 inches wide (1370 mm x 1370 mm). Layouts shall be in
accordance with TIA/EIA-569-A.
6.3.5.3 Communications equipment rooms shall be sized for the equipment
to be used, including future space where required. Room size shall
be approximately 0.75 ft2 (0.07 m2) for each 100 ft2 (9 m2) of work
area, with a minimum size of 150 ft2 (14 m2).
6.3.5.4 Communications computer rooms shall be sized for the equipment to
be used. The design shall anticipate future needs and technologies.
Adjacent to the computer room shall be the support rooms such as
recorded media storage, UPS, I/O stations, etc. Refer to NFPA 75,
Appendix B, for a typical example.
6.3.6 Communications Closet HVAC
6.3.6.1 The communications closet shall maintain a temperature the same as
that of the adjacent office area. Communications closet with active
equipment shall maintain continuous HVAC at all times. If the
building system cannot assure the continuous HVAC required, a
stand-alone unit shall be provided. The environmental equipment
may be located inside the room. Sensors and controls shall be placed
5 ft (1500 mm) above the finished floor, located in the
communications closet.
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 32 of 37 Process Industry Practices
6.4 Fire Protection and Safety
6.4.1 Building fire protection system shall be in accordance with Table 6.4A of
this Practice. The design of the systems shall comply with the applicable
NFPA standards and with this Practice.
6.4.1.1 Building Hydrants (Standpipes)
a. Class I: Provide 2.5-inch (64-mm) hose connections to supply
water for use by fire departments and those trained in handling
heavy fire stream.
b. Class II: Provide 1.5-inch (38-mm) hose stations for use
primarily by the building occupants or by the fire department
during initial response.
c. Class III: Provide 1.5-inch (38-mm) hose stations to supply
water for use by building occupants and 2.5-inch (64-mm) hose
connections to supply a large volume of water for use by fire
departments and those trained in handling heavy fire stream.
Note: Class II is recommended for general requirements.
6.4.1.2 The design of the standpipe system is governed by building height,
area per floor occupancy classification, egress system design,
required flow rate and residual pressure, and the distance of the hose
connection from the source(s) of water supply.
6.4.1.3 Automatic Water Sprinkler Systems
Typically, the sprinkler systems shall be wet or pre-action type,
depending on the building contents. In general, wet pipe systems
shall be used in all cases except those where inadvertent water
leakage could damage high-value or water sensitive contents. In such
cases, dry pipe or pre-action sprinkler systems shall be used.
Systems shall be designed in accordance with NFPA 13.
6.4.1.4 Portable Fire Extinguishers
a. 17-lb (7.7-kg) ABC (ammonium phosphate dry chemical)
extinguishers: These extinguishers shall be located at a
maximum travel distance of 50 ft (15 m) to every equipment
item to be protected.
b. 15-lb (6.9-kg) CO2 extinguisher: These extinguishers shall be
located at a maximum travel distance of 30 ft (9 m) from
electrical equipment to be protected.
c. 100-lb (45.3-kg) CO2 wheeled extinguisher: These
extinguishers shall be in or near electrical substations and/or
switchgear rooms operating with voltages greater than 600 volts
and near emergency diesel generators.
6.4.1.5 Clean Agent Fire Extinguishing Systems
a. A fixed fire suppression system based on an environmentally
friendly agent shall be designed according to NFPA 2001.
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 33 of 37
Table 6.4A. Building Fire Protection System
Location
Indoor
Hydrant
Sprinkler
System
Fixed
Suppression
System
“ABC”
Extinguisher
CO2
Extinguisher
a. Control rooms Yes1.
b. Control room sub-
floor
(1)
2. Substation (4)
3. Local maintenance
shops
Yes (2) Yes (3)
4. Analyzer houses Yes Yes
5. Laboratories Yes (7) Yes (3)
6. Main workshops Yes (2) Yes (3)
7. Warehouses Yes Yes Yes (3)
8. All other buildings that
contain offices,
conference rooms, or
dining areas
Yes (2) Yes (3)
9. Computer suites and
communication
centers
(1) Yes
10. Operator shelter Yes
11. Emergency generator
house
(6)
Notes:
1. (a) Fixed fire suppression system based on an environmentally friendly agent shall
be provided for the sub-floor space of control room, auxiliary room,
communications room, and process control computer room. Such systems shall
be designed and installed in full compliance with NFPA 2001.
(b) A clean agent fire extinguishing system shall be used. Existing halon 1301
systems may be retained in service until the end of their expected working life.
2. (a) In the control building, other than the control room, computer room, and
communications equipment room, whether a sprinkler system shall be or shall
not be provided is determined by the use, fires separation, and occupancy of
these areas. If these areas are provided with a sprinkler system, then the
precaution shall be taken to prevent the discharge water from the sprinkler head
to flow to the control room sub-floor.
(b) In the local maintenance shops, a sprinkler system shall be provided for offices,
corridors, conference/meeting rooms, document rooms, stairways, break rooms,
restrooms, locker rooms, storage rooms, lunch rooms, instrument, workshops,
instrument storage rooms, equipment rooms, and tool rooms.
3. Portable CO2 extinguishers, weighing 15 lb (6.9 kg), shall be provided for such
rooms as follows:
• Control rooms
• Workshops
• HVAC machine rooms
• Electrical rooms/battery rooms
• Switchgear rooms (less than 600 volts)
4. (a) One 100-lb (45.3-kg) CO2 extinguisher shall be provided for each section of
primary substations and/or switchgear rooms (greater than 600 volts) and for
transformers with non-flammable or combustible fluids.
(b) Two 110- lb to 150-lb (50- to 70-kg) potassium bicarbonate-wheeled
extinguishers shall be provided if flammable or combustible transformer fluid is
used.
5. Dry chemical-type extinguishers shall be provided in the commercial kitchen
hoods and in those areas containing deep fryers.
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 34 of 37 Process Industry Practices
6. Both a 100-lb (45.3-kg) CO2 fire extinguisher and a 15-lb (6.9-kg) CO2 fire
extinguisher shall be provided.
7. An automatic sprinkler system as per NFPA 45 shall be provided.
6.4.2 Building fire alarm detection and control systems shall be provided in
accordance with Table 6.4B of this Practice.
6.4.3 Building gas detectors shall be provided as required to maintain a safe
building environment. The type of gas detector to be used depends on the
possible hazards and may include the following:
• Combustible gas detectors
• Toxic gas detectors
• Oxygen analysis
Note: If nitrogen is present and/or nitrogen back-up is provided in the
area, oxygen analysis shall be provided.
6.4.4 HVAC System Interface
When combustible gas and toxic gas sensors are provided, they shall be
situated at the fresh air intake. The HVAC system shall be designed to
interlock with these gas-monitoring systems.
Table 6.4B. Building Fire Alarm Detection and Control Systems
No. Building
Fire
Alarm
Box
Smoke
Detector
(3)(8)
Heat
Detector
(8)
Pressure
Switch
Audible/
Visual
Alarm
1. Process control building Yes (1) (2) (6) (4a) (4b) Yes
2. Substation Yes Yes (6) Yes
3. Local maintenance
buildings
Yes (1) (6) (7) (4b) Yes
4. Utility control bldg. Yes (1) (2) (4a) (4b) Yes
5. Laboratories Yes Yes (4b) Yes
6. Central workshop Yes Yes Yes
7. Warehouse for spare parts Yes (1) Yes (4b) Yes
8. Warehouse for chemicals Yes Yes Yes (4b) Yes
9. Emergency center Yes (1) (2) (4b) Yes
10. Emergency generator house Yes (5) Yes Yes
11. Admin. and office areas Yes (1) (4a) (4b) Yes
12. HVAC machine room Yes Yes
13. Toilets and locker rooms Yes Yes
14. Operator's shelter Yes Yes (6) Yes
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 35 of 37
Notes:
1. In principle, smoke detectors shall be used in all spaces and rooms except as
indicated in Note 3. Actuation of smoke detectors shall result in shutdown of HVAC
system and in sounding of audible devices in the protected areas for as long as the
emergency situation exists.
2. Actuation of fixed fire suppression system is by a signal from cross-zones smoke
detectors.
3. If a sprinkler system is installed, the smoke detection system shall not be provided for
the sprinkler protected areas.
4. System actuation signal of automatic sprinkler system or fixed fire suppression
system:
(a) Fixed fire suppression system discharge
(b) Automatic water sprinkler system actuation
5. Only in the control room
6. Only in lunch, break rooms, and battery rooms as applicable. Actuation of heat
detectors shall result in shutdown of HVAC system and in sounding of audible
devices in the protected areas for as long as the emergency situation exists.
7. Only in fabrication/fittings shops and machinery shop
8. Early response: An early response UL-listed smoke-detecting system by continually
drawing air into the pipe network via high-efficiency aspirator system may be used to
replace conventional smoke/heat-detecting system.
6.5 Plumbing
6.5.1 This section prescribes design criteria for systems listed below, including
necessary piping, fittings, valves, hangers and supports, fixtures, equipment,
insulation, and other trim, accessories, and related parts for the following
systems:
• Sanitary drainage, waste, and vent
• Laboratory waste and vent
• Distilled water, laboratory gas, air, vacuum, and steam system
• Potable hot and cold water
• Safety showers and plumbing fixtures
• HVAC condensate drainage
• Roof drainage system
6.5.2 All plumbing design shall comply with local plumbing code. In the absence
of any locally adopted building code, the building plumbing system shall be
designed in accordance with latest edition of the IPC and the following
requirements unless otherwise specified on the building data sheet.
6.5.3 Safety Requirements
High-temperature equipment and piping, so located as to endanger personnel
or create a fire hazard, shall be properly guarded or covered with insulation.
6.5.4 Plumbing System Layout and Design
6.5.4.1 The plumbing system shall be laid out by determining proper
elevations for all components of the system and using only the
PIP ARC01015
Architectural and Building Utilities Design Criteria June 2002
Page 36 of 37 Process Industry Practices
minimum number of bends to produce a satisfactorily functioning
system.
6.5.4.2 Pipes shall be laid out to fall within partition, wall, or roof cavities.
Furring shall not be used other than as allowed for in the building
design.
6.5.4.3 Horizontal sanitary drainage piping 3 inches (75 mm) and larger
shall be run at a minimum uniform grade of 1/8 inch per ft (3 mm
per 300 mm) (1% slope). Any portion of the drainage system
installed underground or below a basement or cellar shall not be less
than 4 inches (100 mm) in diameter. New pipe shall match slope of
existing pipe where new pipe ties into existing pipe. Horizontal
water piping shall be run with an adequate pitch upwards in
direction of flow to allow complete drainage.
6.5.4.4 Sufficient swing joint, ball joints, expansion loops, and devices shall
be provided as necessary for a flexible piping system.
6.5.4.5 Piping shall be independently supported at pumps, coils, tanks, and
similar locations so that the equipment shall not support the weight
of pipe.
6.5.4.6 The drains from drip pans, relief valves, air vents, and similar
locations shall be piped to spill over an open sight drain, floor drain,
or other acceptable discharge point, and terminated with a plain end
unthreaded pipe 6 inches (150 mm) above the drain.
6.5.4.7 Complete dielectric isolation shall be provided between ferrous and
nonferrous metals.
6.5.4.8 Plumbing pipes shall not be inside the rooms with major electronic
equipment.
6.5.5 Floor Drains
6.5.5.1 All floor drains shall be provided with primer connections, except
shower stall floor drains do not require trap primer connections.
6.5.5.2 Floor drains shall be provided for toilet room, janitor closet, lockers
area, shower stall, eyewash/safety shower, equipment room, and
shop areas.
6.5.6 Cleanouts
6.5.6.1 Cleanouts shall be the same size as the pipes but not larger than
4 inches (100 mm).
6.5.6.2 Cleanouts shall be easily accessible.
6.5.7 Insulation and Pipe Coating
6.5.7.1 All indoor cold water lines shall be provided with anti-sweat
insulation.
6.5.7.2 Underground steel piping shall be coated and wrapped.
PIP ARC01015
June 2002 Architectural and Building Utilities Design Criteria
Process Industry Practices Page 37 of 37
6.5.7.3 The following piping shall be insulated:
a. Domestic hot and cold water piping
b. Horizontal roof drains and overflow piping subject
tocondensation.
6.5.8 Grease Interceptors
Grease interceptors with automatic draw-off shall be provided for drains in
areas where food is prepared.
6.5.9 Oil Interceptor
Oil interceptors shall be provided for drains in maintenance shops or in
similar rooms, near mechanical equipment where potential exists for oil
leakage or spillage.

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Pip arc01015(architechtural &amp; building utilities design criteria)

  • 1. June 2002 Process Industry Practices Architectural PIP ARC01015 Architectural and Building Utilities Design Criteria
  • 2. PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES In an effort to minimize the cost of process industry facilities, this Practice has been prepared from the technical requirements in the existing standards of major industrial users, contractors, or standards organizations. By harmonizing these technical requirements into a single set of Practices, administrative, application, and engineering costs to both the purchaser and the manufacturer should be reduced. While this Practice is expected to incorporate the majority of requirements of most users, individual applications may involve requirements that will be appended to and take precedence over this Practice. Determinations concerning fitness for purpose and particular matters or application of the Practice to particular project or engineering situations should not be made solely on information contained in these materials. The use of trade names from time to time should not be viewed as an expression of preference but rather recognized as normal usage in the trade. Other brands having the same specifications are equally correct and may be substituted for those named. All Practices or guidelines are intended to be consistent with applicable laws and regulations including OSHA requirements. To the extent these Practices or guidelines should conflict with OSHA or other applicable laws or regulations, such laws or regulations must be followed. Consult an appropriate professional before applying or acting on any material contained in or suggested by the Practice. This Practice is subject to revision at any time by the responsible Function Team and will be reviewed every 5 years. This Practice will be revised, reaffirmed, or withdrawn. Information on whether this Practice has been revised may be found at www.pip.org. © Process Industry Practices (PIP), Construction Industry Institute, The University of Texas at Austin, 3925 West Braker Lane (R4500), Austin, Texas 78759. PIP member companies and subscribers may copy this Practice for their internal use. Changes, overlays, addenda, or modifications of any kind are not permitted within any PIP Practice without the express written authorization of PIP. PIP will not consider requests for interpretations (inquiries) for this Practice. Not printed with State funds
  • 3. June 2002 Process Industry Practices Page 1 of 37 Process Industry Practices Architectural PIP ARC01015 Architectural and Building Utilities Design Criteria Table of Contents 1. Introduction..................................2 1.1 Purpose ............................................. 2 1.2 Scope................................................. 2 2. References ...................................2 2.1 Process Industry Practices ................ 2 2.2 Industry Codes, Reports, and Standards .......................................... 2 2.3 Government Regulations................... 5 3. Definitions ....................................5 4. Building Design............................5 4.1 Occupancy......................................... 5 4.2 Means of Egress................................ 6 4.3 Foundation and Structure .................. 6 4.4 Materials and Methods of Construction................................... 6 4.5 Pre-Engineered Metal Buildings ........ 6 5. Products .......................................6 5.1 Concrete ............................................ 6 5.2 Masonry............................................. 6 5.3 Metals ................................................ 6 5.4 Woods (and Plastics)......................... 6 5.5 Gypsum Board Assemblies ............... 7 5.6 Ceilings .............................................. 7 5.7 Flooring.............................................. 7 5.8 Thermal and Moisture Protection ...... 7 5.9 Fire Resistance.................................. 8 5.10 Doors and Windows .......................... 8 5.11 Specialties ......................................... 9 5.12 Conveying Systems ......................... 10 6. Building Utilities ........................ 11 6.1 Heating, Ventilation, and Air Conditioning (HVAC) ....................... 11 6.2 Electrical Work................................. 25 6.3 Communications.............................. 27 6.4 Fire Protection and Safety ............... 32 6.5 Plumbing.......................................... 35
  • 4. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 2 of 37 Process Industry Practices 1. Introduction 1.1 Purpose This Practice provides the architect and the engineer with criteria for building design and building utilities within process facilities. 1.2 Scope These general criteria define the minimum requirements for the design of buildings for process industry facilities. This Practice is intended to be used in conjunction with PIP ARC01016 - Building Data Sheet, PIP CVC01017 - Plant Site Data Sheet, and PIP STC01015 - Structural Design Criteria. This Practice is not a design guide and does not apply to open industrial structures. 2. References When adopted in these criteria, the latest edition of the following applicable codes, standards, specifications, and references in effect on the date of contract award shall be used, except as otherwise specified. Short titles will be used herein when appropriate. 2.1 Process Industry Practices (PIP) – PIP ARC01016 - Building Data Sheet – PIP ARS08111 - Standard Steel Doors and Frames Specification – PIP ARS08710 - Door Hardware Specification – PIP ARS13120 - Pre-Engineered Metal Buildings Specification – PIP CVC01017 - Plant Site Data Sheets – PIP STC01015 - Structural Design Criteria – PIP STC01018 - Blast Resistant Building Design Criteria 2.2 Industry Codes, Reports, and Standards • Air Movement and Control Association (AMCA) – AMCA 511 - Certified Ratings Program for Air Control Devices • Aluminum Association (AA) – AA ADM - Aluminum Design Manual • American Conference of Government Industrial Hygienists (ACGIH) – ACGIH 2090 - Industrial Ventilation • American Petroleum Institute (API) – API RP 540 - Electrical Installations in Petroleum Processing Plants
  • 5. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 3 of 37 • American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc (ASHRAE) – ASHRAE HVAC - Applications IP – ASHRAE - Fundamentals IP – ASHRAE - Refrigeration IP – ASHRAE 62 - Ventilation for Acceptable Indoor Air Quality – ASHRAE 110 - Method of Testing Performance of Laboratory Fume Hoods • American Society of Mechanical Engineers (ASME) – ASME A17.1 with Addenda - Standard Safety Code for Elevators and Escalators • American Society for Testing and Materials (ASTM) – ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials – ASTM E119 REV A - Standard Test Methods for Fire Tests of Building Construction and Materials – ASTM E1264 - Standard Classification for Acoustical Ceiling Products – ASTM F1066 - Standard Specifications for Vinyl Composition Floor Tile – ASTM F1700 - Standard Specifications for Solid Vinyl Floor Tile • Ceilings and Interior Systems Construction Association (CISCA) – Ceiling System Handbook – Recommended Test Procedures for Access Floors • International Code Council (ICC) – International Building Code (IBC) – International Energy Conservation Code (IECC) – International Fire Code (IFC) – International Mechanical Code (IMC) – International Plumbing Code (IPC) • Institute of Electrical and Electronic Engineers (IEEE) – IEEE 1100 - Recommended Practice for Powering and Grounding Electronic Equipment • Instrumentation Systems and Automation Society (ISA Society) – ISA 71.04 - Environmental Conditions for Process Measurement and Control Systems: Airborne Contaminants • National Fire Protection Association (NFPA) – NFPA 13 - Standard for the Installation of Sprinkler Systems – NFPA 45 - Standard on Fire Protection for Laboratories Using Chemicals – NFPA 70 - National Electrical Code (NEC)
  • 6. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 4 of 37 Process Industry Practices – NFPA 72 - National Fire Alarm Code – NFPA 75 - Standard for Protection of Electronic Computer/Data Processing Equipment – NFPA 80 - Standard for Fire Doors and Fire Windows – NFPA 90A - Standard for the Installation of Air- Conditioning and Ventilating Systems – NFPA 91 - Standard for Exhaust Systems for Air Conveying, of Vapors, Gases, Mists, and Noncombustible Particulate Solids – NFPA 101 - Life Safety Code – NFPA 220 - Standard on Types of Building Construction – NFPA 232 - Standard for the Protection of Records – NFPA 252 - Standard Methods of Fire Tests of Door Assemblies – NFPA 496 - Standard for Purged and Pressurized Enclosures for Electrical Equipment – NFPA 2001 - Standard on Clean Agent Fire Extinguishing Systems • National Roofing Contractors Association (NRCA) – NRCA ITEM ML102 - Roofing and Waterproofing Manual • Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) – SMACNA FSRDI - Fire, Smoke and Radiation Damper Installation Guide for HVAC Systems – SMACNA HVACMF - HVAC Duct Construction Standards Metal and Flexible • Steel Deck Institute (SDI) – Design Manual for Composite Decks, Form Decks and Roof Decks • Telecommunication Industry Association (TIA) – TIA/EIA - 568-B - Commercial Building Telecommunications Cabling Standard – TIA/EIA - 569-A - Commercial Building Standard for Telecommunication Pathways and Spaces – TIA/EIA - 570-A - Residential Telecommunications Wiring Standard – TIA/EIA - 606 - Administration Standard for the Telecommunications Infrastructure of Commercial Buildings – TIA/EIA - 607 - Commercial Building Grounding and Bonding Requirements for Telecommunications • Underwriters Laboratory (UL) – UL 10B - UL Standard for Safety Fire Tests of Door Assemblies – UL 555 - UL Standard for Safety Fire Dampers – UL 555C - UL Standard for Safety Ceiling Dampers
  • 7. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 5 of 37 – UL 1863 - UL Standard for Safety Communication Circuit Accessories – UL 1950 - UL Standard for Safety of Information Technology Equipment Including Electrical Business Equipment 2.3 Government Regulations Federal Standards and Instructions of the Occupational Safety and Health Administration (OSHA) and Americans with Disabilities Act (ADA), including any additional requirements by state or local agencies that have jurisdiction in the state where the project is to be constructed, shall apply. • U. S. Department of Labor, Occupational Safety and Health Administration (OSHA) – OSHA 29 CFR Part 1910, Occupational Safety and Health Standards • U. S. Americans with Disabilities Act (ADA) – Accessibility Guidelines for Buildings and Facilities • Federal Communications Commission (FCC) – Part 68 - Connection of Terminal Equipment to the Telephone Network, Code of Federal Regulations, Title 47, Telecommunications 3. Definitions contract documents: Any and all documents that the owner has transmitted or otherwise communicated, either by incorporation or by reference, and made part of the legal contract agreement or purchase order agreement between the owner and the contractor owner: The party who awards the contract. The owner may be the owner or the owner’s authorized agent. 4. Building Design In addition to local jurisdiction and government requirements, occupied buildings shall be designed in accordance with the IBC, OSHA 29 CFR Part 1910 and the ADA unless otherwise specified in the PIP ARC01016 data sheet or in the contract documents. Unoccupied buildings and occupied buildings with primarily industrial occupancies shall be designed in accordance with NFPA 101. 4.1 Occupancy 4.1.1 The occupancy of a building or portion thereof shall be determined by its intended use. 4.1.2 Industrial occupancies shall be classified in accordance with NFPA 101, Chapter 40, “Industrial Occupancies.” 4.1.3 Occupied buildings shall comply with the accessibility requirements of the ADA and local state-required accessibility standards.
  • 8. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 6 of 37 Process Industry Practices 4.2 Means of Egress 4.2.1 Buildings shall be provided with means of egress in accordance with the applicable building codes and with ADA. 4.2.3 Industrial occupancies shall meet the egress requirements of NFPA 101 for “Industrial Occupancies.” 4.3 Foundation and Structure The foundation and structure of a building shall be designed in accordance with PIP STC01015. Buildings designed to be blast resistant shall also be designed in accordance with PIP STC01018. 4.4 Materials and Methods of Construction The building shall be designed with the materials and methods of construction appropriate for its occupancy. The type of construction shall be in accordance with the requirements of the governing building codes. 4.5 Pre-Engineered Metal Buildings Pre-engineered metal buildings shall be in accordance with PIP ARS13120. 5. Products Products for buildings shall be designed to meet the minimum requirements specified herein, unless the contract documents or applicable governing jurisdictions require more stringent practices. 5.1 Concrete 5.1.1 Concrete design shall be in accordance with PIP STC01015. 5.2 Masonry 5.2.1 Masonry design shall be in accordance with PIP STC01015. 5.3 Metals 5.3.1 Steel design shall be in accordance with PIP STC01015. 5.3.2 Floor and roof deck shall be designed according to SDI Design Manual for Composite Decks, Form Decks and Roof Decks. 5.3.3 Aluminum design shall be in accordance with AA ADM. 5.4 Woods (and Plastics) 5.4.1 Wood design using allowable stress design shall be in accordance with the IBC. 5.4.2 Structural lumber shall be grade No.2 or better. Non-structural lumber shall be grade No. 3 or better.
  • 9. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 7 of 37 5.5 Gypsum Board Assemblies 5.5.1 Interior walls shall be regular-type gypsum board on minimum 22-gage steel stud framing. 5.5.2 Type X gypsum board shall be used where fire-resistance-rated assemblies are required. Gypsum board shall be taped and sanded. For gypsum board assemblies with fire-resistance ratings, materials and construction shall be provided that are identical to those tested in assembly as indicated according to ASTM E 119 by an independent testing and inspecting agency that is acceptable to authorities having jurisdiction. 5.5.3 Fur-outs shall be gypsum board on steel stud framing. 5.5.4 Gypsum board walls shall have a latex enamel painted finish unless otherwise specified. 5.6 Ceilings 5.6.1 Suspended acoustical ceiling installation shall comply with CISCA’s Ceiling Systems Handbook. 5.6.2 Suspended ceiling acoustical panels shall comply with ASTM E 1264 classifications as designated by types, patterns, acoustical ratings, and light reflectance. 5.6.3 Suspended ceiling metal suspension system shall be standard direct-hung metal suspension systems. 5.7 Flooring 5.7.1 Vinyl flooring shall be solid vinyl tile complying with ASTM F 1700. Vinyl composition floor tile shall comply with ASTM F 1066. 5.7.2 Access floor systems shall be in accordance with Section 5.11.2 of this Practice. 5.8 Thermal and Moisture Protection 5.8.1 Unless otherwise specified in the contract documents, occupied buildings shall be designed in accordance with the ICC IECC. Buildings with industrial occupancies shall comply with the requirements of the IECC, unless the process requirements make it impracticable. 5.8.2 Insulation 5.8.2.1 Insulation shall have a flame-spread rating of less than 25 and shall not be exposed to potential fire areas. 5.8.2.2 Insulation shall be used for separation between roof decks and the roofing membranes. 5.8.2.3 Insulation shall be provided between conditioned areas and exterior wall and roofs. R values shall be as required to comply with the IECC and the local environmental conditions but shall be no less than R-11 for walls and R-19 for roofs, unless required otherwise in the contract documents.
  • 10. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 8 of 37 Process Industry Practices 5.8.3 Roofing Systems 5.8.3.1 Roofing systems shall be designed in accordance with NRCA ITEM ML 102. 5.8.3.2 Low-slope roofs shall have a minimum slope of 1/4 inch per foot (21 mm/m). 5.8.3.3 Relief openings shall pass through the parapet. The roof structure shall be designed for ponding of as much as the height of the relief openings and with consideration to the deflected shape under the full load. 5.8.3.4 When equipment or piping is placed on a building roof, a suitable walking or working surface shall be used to prevent damage to the roofing. 5.8.3.5 Exposed sides of working area and walkway within 6.0 ft (1800 mm) of edge of roof shall be protected with standard railings. 5.8.3.6 Equipment shall be mounted a minimum of 8 inches (200 mm) above the roofline to allow for efficient maintenance and repair of the roofing material. Equipment supports shall not be constructed of wood. 5.9 Fire Resistance 5.9.1 Buildings shall be designed for fire resistance in accordance with the IBC, “Fire Resistant Materials and Construction,” and in accordance with the IFC. 5.9.2 Industrial occupancy buildings shall meet the requirements of the previous section, except when the industrial process makes meeting the requirements impracticable; in such cases these buildings shall as a minimum meet the protection requirements of NFPA 101. 5.10 Doors and Windows 5.10.1 Personnel doors shall be in accordance with PIP ARS08111. 5.10.2 Door hardware shall be in accordance with PIP ARS08710. 5.10.3 Overhead coiling doors larger than 64 ft2 (6 m2) shall be motorized, unless specified otherwise. The side rails shall be made from structural steel, not cold-rolled shapes. 5.10.4 Fire-rated doors shall meet the requirements of NFPA 252, NFPA 80, and UL 10B. 5.10.5 Blast-resistant doors shall be designed in accordance with PIP STC01018 and shall be provided with automatic door closures. 5.10.6 Windows shall not be provided in buildings within 200 ft (60 m) of hazardous process facilities unless otherwise required by the owner and permitted by applicable fire safety and building codes.
  • 11. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 9 of 37 5.11 Specialties 5.11.1 Exterior Louvers 5.11.1.1 Louvers shall be all-welded construction with drainable blades to minimize water penetration while maintaining a high free area. 5.11.1.2 Louvers shall be designed with a frame that includes a jamb gutter, a recessed drip lip at the head, and an extended water stop on the back of the sill. 5.11.1.3 Louvers shall meet the requirements of AMCA 511 and shall bear the AMCA-certified rating seal for both air performance and water penetration. 5.11.2 Access Floors 5.11.2.1 Panels and support systems shall be in accordance with CISCA- Recommended Test Procedure for Access Floors. 5.11.2.2 Floor panels without coverings shall have a Class “A” flame-spread rating when tested in accordance with ASTM E84. 5.11.2.3 Floor height shall be 24 inches (600 mm) unless otherwise specified in the PIP ARC01016 data sheet. 5.11.2.4 The supporting system shall be a commercial heavy duty, bolted grid system, shall be free from vibration squeaks, shall be designed to support the equipment that will be located on the access flooring system, and shall be resistant to seismic loads in accordance with PIP CVC01017. The floor system shall support the following minimum loads: a. Static: 1000 lb (4.5 kN), concentrated b. Dynamic: • 1000 lb (4.5 kN) rolling load for 3-inch diameter x 1-13/16-inch wide (75-mm diameter x 46 mm) with 10 passes • 500 lb (2.25 kN) for 6-inch diameter x 1-1/2-inch wide (150-mm diameter x 38 mm) with 10,000 passes c. Impact load: 250 lb (1.12 kN) 5.11.2.5 The entire flooring system shall be electrically grounded. 5.11.3 Toilet Compartments and Urinal Screens 5.11.3.1 Materials shall be commercial heavy duty, non-permeable, non- corrosive, and stain resistant. 5.11.3.2 Compartment doors shall be a minimum of 24 inches (600 mm) wide. 5.11.3.3 Each compartment shall be provided with a coat hook, paper holder, and door latches.
  • 12. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 10 of 37 Process Industry Practices 5.11.3.4 Screw and bolt heads shall match accessory finish and shall be non- removable and vandal-resistant. 5.11.4 Restrooms 5.11.4.1 Restrooms shall be provided with soap dispensers, paper towel dispensers, waste receptacle, mirrors, and a shelf for personal items. Materials shall be commercial, heavy duty, and non- corrosive. 5.11.4.2 Anchors shall be concealed and shall be made of nonferrous metal or stainless steel. 5.11.5 Laboratory Casework 5.11.5.1 Countertops shall be constructed to resist chemical, moisture, physical abuse, and acid splatters and shall be resistant to damage from heavy instruments and abrasive cleaners. 5.11.5.2 Casework components shall withstand the following minimum loads without damage to the components or to the casework operation: a. Base unit load capacity 500 plf (7.3 kN/m) b. Suspended units 300 plf (4.4 kN/m) c. Drawers in cabinets 150 lb (0.7 kN) d. Utility tables (four-leg) 300 lb (1.4 kN) e. Hanging wall cases 300 lb (1.4 kN) f. Capacity for shelves of units 150 lb (0.7 kN) 5.11.5.4 Casework shall be of flush construction with the surface of doors, and drawers and panel faces shall be flush with the cabinet fronts, ends, and rails. 5.11.5.5 Base cabinets with double swinging doors shall provide full access to the interior without center vertical post. 5.11.5.6 Drawers shall be rated for 150-lb (0.7-kN) load capacity at full extension. Drawers shall be sound-deadened, and all corners shall be fitted smoothly. 5.11.6 Laboratory Fume Hoods Fume hoods shall be in accordance with NFPA 45. 5.12 Conveying Systems Elevators, escalators, and dumbwaiters shall be designed in accordance with ASME A17.1.
  • 13. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 11 of 37 6. Building Utilities 6.1 Heating, Ventilation, and Air Conditioning (HVAC) 6.1.1 Design Criteria 6.1.1.1 Climatic Conditions 6.1.1.1.1 Climatic condition values shall be based on values given in the ASHRAE Fundamentals IP unless site specific design temperatures are specified on the PIP CVC01017 data sheet. 6.1.1.1.2 For all HVAC systems, cooling load shall be calculated with the summer design dry bulb (0.4%) and mean coincident wet bulb temperatures, and the supply air requirements shall be determined at these temperatures. 6.1.1.1.3 For HVAC systems that have more than 20% outside air make-up, in addition to the cooling load calculations performed as specified in Section 6.1.1.1.2, the cooling load shall also be calculated at the design wet bulb (0.4%) and mean coincident dry bulb temperature to determine which set of conditions results in larger HVAC system capacity. This will determine the cooling capacity of the refrigeration system. The airside capacity shall be as determined from Section 6.1.1.1.2. 6.1.1.1.4 For the selection of air-cooled packaged units, air-cooled condensers, and air-cooled condensing units, the summer design dry bulb (0.4%) temperature shall be used. 6.1.1.1.5 Heating load shall be calculated using the 99.6% heating dry bulb temperature. 6.1.1.2 Indoor Design Conditions 6.1.1.2.1 Table 6.1A describes the minimum indoor conditions to be used for the design of HVAC systems, unless otherwise specified in the contract documents. 6.1.1.2.2 Design conditions for other occupancies shall comply with recommendations of the ASHRAE Fundamentals IP applicable health and safety codes, and equipment manufacturers’ requirements. 6.1.1.2.3 HVAC systems shall be capable of maintaining dry bulb and relative humidity within the performance range given in Table 6.1A.
  • 14. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 12 of 37 Process Industry Practices 6.1.2 Load Calculation 6.1.2.1 General Requirements 6.1.2.1.1 HVAC load calculations shall be based on ASHRAE Fundamentals IP methods and shall include 5% but not more than 10% excess capacity (sensible, latent, or heating) as safety factors. Residential method, preferably total equivalent temperature differential with time averaging (TETD/TA) shall be used only for residential application. 6.1.2.1.2 Overall building cooling and heating loads shall be calculated. Zoning, exposure, and building mass shall be considered in heating and cooling calculations. The air- conditioning system shall provide comfortable conditions in all rooms throughout the operating period in accordance with Table 6.1A. Each zone, portion of a zone, and room with different load profiles, orientations, or sensible loads shall be calculated. A separate block load for each air- handling system shall also be calculated. 6.1.2.2 Cooling Loads 6.1.2.2.1 Cooling load calculations shall consider all sensible and latent heat sources. 6.1.2.2.2 Sensible cooling load shall be calculated for building envelope, people, lights, equipment, interior non- conditioned spaces, duct and plenum gains, and outside air that is introduced into the system by air make-up or infiltration. 6.1.2.2.3 Latent cooling load shall be calculated for people, outside air, and any process in which moisture is released to the air. 6.1.2.2.4 Outside air requirements shall be carefully evaluated for the building pressurization in accordance with NFPA 496. 6.1.2.3 Heating Loads Loads shall include heat losses from building envelope, interior non- conditioned spaces (partitions, ceilings, floors), duct and plenum losses, and outside air that is introduced into the system by make-up air and infiltration. Final discharge temperatures shall range between 85ºF (30ºC) and 110ºF (43ºC).
  • 15. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 13 of 37 6.1.3 System Considerations 6.1.3.1 Zoning In buildings with separate interior and perimeter rooms, each room or group of rooms (except for unoccupied spaces) having a distinctive load profile shall have individual temperature control. 6.1.3.2 Air System Design 6.1.3.2.1 Air distribution systems shall be designed in accordance with ASHRAE Fundaments IP, “Duct Design” section. Supply air ductwork shall be designed for a maximum pressure drop of 0. 1 inch wg per 100 ft (0.82 Pa/m) where space conditions allow. Return, general exhaust, and outside air duct shall be sized for a maximum pressure drop of 0.08 inch wg (0.65 Pa/m) where space conditions allow. 6.1.3.2.2 Non-general exhaust duct sizing criteria shall be in accordance with ACGIH 2090. 6.1.3.2.3 All ductwork and fittings shall be fabricated in accordance with the latest edition of the SMACNA HVACMF and according to the static pressure expected to be encountered in the system. Flexible duct shall not be used for return or exhaust systems. When flexible ducts are used for supply air, they shall not exceed 8.0 ft (2400 mm) in length. 6.1.3.2.4 Manufacturer’s standard diffusers, registers, and grilles shall be used. 6.1.3.2.5 A volume damper shall be provided in each branch duct serving a separate zone or room. Splitter dampers shall not be used for duct branch take-offs. 6.1.3.2.6 Volume dampers shall be provided ahead of flexible duct serving supply air grilles, registers, and diffusers. 6.1.3.2.7 Fresh air intakes shall be designed and situated to minimize dust intrusion. 6.1.3.2.8 Outside air intakes shall not be closer than 10 ft (3000 mm) from an appliance vent outlet, a vent opening, or a plumbing drainage system or discharge outlet of an exhaust fan unless the outlet is 5 ft (1500 mm) above the outside air intake. 6.1.3.2.9 Return air shall be drawn through ceiling plenum, whenever practical. Where cable trays are situated inside the ceiling plenum, evaluate using ducted return air system rather than plenum-rated cables. No air-conditioning
  • 16. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 14 of 37 Process Industry Practices equipment rooms shall be used as return air plenums when building is pressurized in accordance with NFPA 496. 6.1.3.2.10 Outside air intake ducts shall have combustible gas and fire/smoke detectors to detect the presence of flammable gas/vapors and/or smoke in buildings in NEC-classified areas. An alarm shall occur when detecting greater than 10% lower flammable limit. The air intake blowers shall shut down and the damper shall close automatically if the detector detects more than 25% of the lower flammable limit. 6.1.3.3 Control Systems 6.1.3.3.1 HVAC systems shall be designed and installed using commercially available equipment and techniques to control temperature and, when required, humidity, pressure, and air quality. All thermostats shall be manually adjustable over the operating range. 6.1.3.3.2 Fire dampers shall be installed in accordance with NFPA 101. HVAC units shall automatically shut down when fire alarm system is activated, in accordance with NFPA 90A and NFPA 101 unless the building is always manned (e.g., control building). In this case, a manual shutdown switch shall be provided. 6.1.3.4 Piping and Coils 6.1.3.4.1 The location of air-conditioning equipment components shall account for piping and equipment pressure drop, area classification, and equipment clearance requirements. Access space shall be provided for the removal of any coil or other equipment component, in accordance with equipment manufacturer’s recommendation. 6.1.3.4.2 Multiple compressor refrigerant piping shall be interconnected in accordance with manufacturer’s recommendations. For any split condenser/compressor or compressor/evaporator unit separated by more than 10 ft (3000 mm), refrigerant lines shall be sized in accordance with ASHRAE Refrigeration IP, “Refrigerant Line Sizing” section. 6.1.3.5 Humidity Control 6.1.3.5.1 Where humidification is required, humidifiers shall be steam- or ultrasonic-type humidifiers and have water blowdown capability to minimize solids buildup. A high- limit duct humidistat shall be used to limit moisture carryover and condensation in the duct. Normal control shall be by a return air or space humidistat.
  • 17. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 15 of 37 6.1.3.5.2 High humidity control shall be accomplished by use of the cooling coil. The humidistat shall override the thermostat and cooling with re-heating as required to maintain space temperature. 6.1.3.6 Ventilation and Exhaust 6.1.3.6.1 All enclosed portions of buildings customarily used by occupants shall be provided with fresh ventilation air. The minimum amount of outside air shall either equal 10 percent of supply air in excess of all exhaust air or equal the ventilation air requirements listed in Table 6.1B of ASHRAE 62, whichever is greater. 6.1.3.6.2 The Toilet, locker, and shower rooms shall be provided with a mechanically operated exhaust system capable of providing as a minimum the ventilation requirements of ASHRAE 62. The system shall exhaust directly to the outside, and the point of discharge shall be at least 5 ft (1500 mm) from any openable window or door and 3 ft (915 mm) above and 10 ft (3000 mm) away from any air intake. 6.1.3.6.3 Occupied, non-air-conditioned enclosed spaces shall have mechanically forced ventilation. The ventilation airflow rate shall be established to ensure that space temperature does not exceed the ambient outdoor temperature by more than 10ºF, or 5.5ºC. Inlet air intakes shall be designed to minimize dust intrusion. 6.1.3.6.4 Buildings or portions thereof where flammable or toxic materials are used shall be for the required ventilation rate according to ACGIH 2090. Exhaust ventilation shall be taken from a point at or near the floor level for gases heavier than air and from near the ceiling level for gases lighter than air. 6.1.3.6.5 Ventilation for special applications shall be in accordance with ACGIH 2090. 6.1.3.6.6 Every automotive-type garage, where vehicles operate under their own power, shall either have a mechanical exhaust system or have permanent openings to the outside. 6.1.3.7 Noise 6.1.3.7.1 Acceptable HVAC-related background sound for an occupied room shall conform to the guideline criteria specified in ASHRAE Applications IP.
  • 18. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 16 of 37 Process Industry Practices 6.1.4 Special Applications 6.1.4.1 Chemical Laboratories 6.1.4.1.1 Design and operation of HVAC systems in chemical laboratories shall be in accordance with the latest edition of the following: • ASHRAE 62 • ASHRAE - Applications IP, chapter on laboratories • ACGIH 2090 • NFPA 45 • NFPA 90A • NFPA 91 • ASHRAE 110 6.1.4.1.2 Air from laboratory work areas shall be continuously discharged to the outdoors, and the area shall be maintained at a negative pressure relative to the adjacent areas. Air from laboratory work areas shall not be recirculated. 6.1.4.1.3 Ductwork, hoods, fans, drives, and other system components shall be designed and selected to meet fire, explosion, corrosion, and acid-resistant requirements as required. 6.1.4.1.4 Automatic fire dampers shall not be used in laboratory hood exhaust systems. Fire detection and alarm systems shall not be interlocked to automatically shut down laboratory hood exhaust fans. 6.1.4.1.5 Fume hood exhaust shall be designed in accordance with the latest edition of IMC and ACGIH 2090. 6.1.4.1.6 Airflow indicators shall be installed on new laboratory hoods or on existing laboratory hoods, when modified, in accordance with the requirements of NFPA 45. 6.1.4.2 Essential Operating Facilities 6.1.4.2.1 Essential operating facilities include rack rooms, computer rooms, control rooms, communication equipment rooms, and any other buildings housing electrical equipment and control systems that are vital in the production, processing, and transportation of the process.
  • 19. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 17 of 37 6.1.4.2.2 Buildings such as office buildings, maintenance facilities, dining halls, etc., are excluded from the requirements of this section. 6.1.4.2.3 In the case of pressurized buildings, the maximum amount of outside air supplied to pressurize the building during normal operation with all doors and windows closed shall be used in HVAC load calculations. 6.1.4.2.4 100% capacity of cooling and heating standby systems shall be provided for the essential operating facilities. 6.1.4.2.5 In buildings located in Class I, Division 2 electrical areas, the HVAC system, alarms, and controls shall be designed to prevent the entry of flammable vapors or gases in accordance with the requirements of NFPA 496, in the section titled “Pressurized Control Rooms.” 6.1.4.2.6 Outside air for pressurization shall take into account all air exhausted from the space, including all exhaust fans as if operating on a continual basis, even if all exhaust fans do not operate continuously. 6.1.4.2.7 Any HVAC equipment in hazardous areas shall be suitable for operation in the area classification in which it is located. 6.1.4.2.8 Outside air for pressurization of buildings in classified areas shall be taken from an unclassified area. 6.1.4.2.9 In pressurized buildings, the exterior envelope shall be designed to be as air tight as practical. Air-locked vestibules shall be provided at the building entrance doors. 6.1.4.2.10 A 100% standby fan shall be provided for buildings with pressurization systems. 6.1.4.2.11 Outside air supply ducts for buildings inside or near an operating process plant shall have combustible gas analyzers to detect the presence of flammable gas/vapors in the air intake. An alarm shall occur when analysis detects greater than 10% of the lower flammable limit. The air intake blowers shall shut down automatically if the analyzer detects more than 25% of the lower flammable limit. Dampers shall automatically close when the blowers shut down. 6.1.4.3 Battery Rooms 6.1.4.3.1 Battery rooms shall be ventilated to the outside of the building at a minimum rate of one air change every 3 hours, unless a higher exhaust airflow rate is required
  • 20. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 18 of 37 Process Industry Practices because of the discharge of cooling air that cannot be recycled from the room. 6.1.4.3.2 Air shall not be recycled from battery rooms. Where batteries are inside the electric/UPS rooms, if analysis reveals that H2 evolution is less than 2% of the room volume while charging, once-through air system is not required; however, a local exhaust system over the battery area shall be provided. 6.1.4.3.3 The bottom of the supply air outlet into the battery room shall not be higher than 6 inches (150 mm) above the floor, and the exhaust opening shall be in the ceiling or its upper edge and shall be flush with the ceiling if the exhaust opening is in a wall. Air inlets and outlets shall be located to provide effective cross ventilation over the batteries. 6.1.4.4 Chemical Filtration In all buildings containing electronic equipment, the concentration of corrosive gases shall be limited to the G1 environmental classification level defined in Table 6.1B. When it is confirmed that the concentration of corrosive gases in the local plant environment will exceed the G1 classification level, chemical filters shall be provided that limit to the G1 classification level the concentration of gases inside the rooms containing the electronic equipment. Activated charcoal shall be used unless otherwise specified in the PIP ARC01016 data sheet. 6.1.4.5 Dust Filters Dust filters shall be equipped with pre-filters and final filters. The pre-filters shall have a minimum of 25% efficiency, and the final filters shall provide a minimum of 85% dust spot efficiency, as defined by ASHRAE standards. The selected filters shall be easily available locally. 6.1.4.6 Insulation 6.1.4.6.1 All supply and return air ducts, located outdoors or exposed to unconditioned air, shall be insulated. 6.1.4.6.2 Insulation is not required for return air ducts in a ceiling space where both sides of the ceiling space are exposed to conditioned air and where the ceiling space is not used as a return air plenum. 6.1.4.6.3 Supply air ducts in return air plenums shall be insulated. 6.1.4.6.4 Supply air ducts in conditioned space and return air ducts in return air plenums shall be insulated.
  • 21. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 19 of 37 6.1.4.6.5 Internal duct lining shall not be used, except in acoustically sensitive areas. Exception: Internal lining that includes protective coating to prevent erosion is permitted for terminal boxes and air-handling units. 6.1.4.6.6 Refrigerant suction lines shall be insulated from the evaporator to the compressor. Condensate line shall be insulated from the unit to the drain location. 6.1.4.7 Dampers 6.1.4.7.1 Each branch duct serving a separate zone or room shall have a volume damper. Branch duct dampers shall be sheet metal opposed blade type, using pivot and rod, with locking quadrant damper. 6.1.4.7.2 Fire dampers shall bear the UL label. Fire dampers shall be securely mounted in a rated fire separation wall, ceiling, or floor, such that ducts can break away without lessening fire separation rating. Fire and smoke dampers shall be manufactured in accordance with UL-555 or UL-555C and installed in accordance with SMACNA FSRDI. For HVAC systems, inspection doors shall be provided to allow access to all fire dampers. 6.1.4.7.3 Combination smoke/fire dampers shall meet all requirements for smoke damper fire alarm closure and fire damper latching. 6.1.5 Installation 6.1.5.1 All air handlers, refrigeration condenser units, pumps, or any equipment mounted outside, shall be mounted on a concrete housekeeping pad, at a minimum of 4 inches (100 mm) above the floor or pavement or 6 inches (150 mm) above surrounding unpaved areas. 6.1.5.2 Access doors shall be provided to every valve, damper, or mechanical device that requires periodic inspection or adjustment. Access doors for fire dampers shall be positioned so that dampers can be reset and fusible links can be replaced. 6.1.5.3 A minimum of 3-ft (900-mm) clearance shall be provided on each side of equipment with openable panel or controls, unless otherwise required by equipment manufacturer. Adequate space shall be provided for coil removal.
  • 22. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 20 of 37 Process Industry Practices 6.1.5.4 All HVAC equipment shall be properly grounded in accordance with NFPA 70.
  • 23. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 21 of 37 Table 6.1A - HVAC Room Descriptions and Design Criteria Room Name Room Functions Description Thermostat- Setting Temp. (dB) F° / C° % Relative Humidity Pressure Relative to Atmosphere Air Quality Remarks Battery Rooms Contains battery system. Not normally occupied. 77°F/26°C summer 72°F/ 22°C winter N/A Negative pressure to the rest of the building As req’d for gas removal These rooms are sometimes classified for electrical installations.(i.e., Class I, Division 2) Break Rooms Generally house a sink, microwave, or other kitchen-type appliance. Generally have table(s) and chairs for people to sit and eat. Break rooms may or may not also have vending machines. Occasionally occupied spaces. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Coffee/Vending Rooms Contain vending machines and/or coffee machines. May also have microwaves. These rooms are distinguished from break rooms in that they do not generally have tables, chairs, or sinks. Not normally occupied spaces. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Change Rooms Areas for personnel to change clothes and may include lockers and lavatories. They may be part of or adjacent to restrooms or shower rooms. Occasionally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% Negative pressure to the rest of the building ASHRAE Std. 62 Communications Closets Contain communications equipment, cable terminations, and associated cross-connect cable/wiring. Not normally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) N/A See Notes 2 and 3 for additional requirements. Communications Computer Rooms Contain programming applications, electronic equipment such as servers, switches, hubs, and routers. Occasionally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) ISA 71.04 See Note 3 for additional requirements. Communications Equipment Rooms Contain programming applications and electronic equipment such as servers, switches, hubs, and routers Occasionally occupied. 75°F/ 24°C summer 72°F/ 22°C winter 50% ± 10% +0.10” (25 Pa) ISA 71.04 See Note 3 for additional requirements. Computer Rooms Mainly house computers and associated equipment. May be considered either normally or not normally occupied space, depending on the project specific use. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) ISA 71.04 See Note 2 for additional requirements. (Continued, next page)
  • 24. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 22 of 37 Process Industry Practices Room Name Room Functions Description Thermostat- Setting Temp. (dB) F° / C° % Relative Humidity Pressure Relative to Atmosphere Air Quality Remarks Table 6.1A, continued Conference Rooms or Auditorium Occasionally occupied. When occupied, these spaces may have a lower square foot per person average than do normally occupied spaces. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Control Rooms Contain control consoles. Normally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) ISA 71.04 Copy/Fax Rooms Separate walled-in rooms for housing copy and/or fax machines. Not normally occupied. For HVAC design purposes, any normally occupied space listed as a copy/fax room should be treated as an office space. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) N/A Electrical/ Telephone/ Radio Rooms Specifically for housing electrical, telephone, or radio equipment. Distinguished from mechanical room because they specifically house electrical/telephone/radio equipment. Not normally occupied. 80°F/26°C summer 50°F/10°C winter or as required by equipment manufacturer 50% ± 10% or as required by equipment manufacturer +0.05” (12.5 Pa) N/A HVAC/ Mechanical Rooms Contain HVAC equipment and/or other types of equipment such as pumps, water heaters, electrical equipment, etc. Not normally occupied spaces. 80°F/26°C 50°F/10°C N/A +0.05” (12.5 Pa) N/A Janitor’s Closets Have a service sink and provide storage for various cleaning supplies. Not normally occupied spaces. 80°F/26°C summer 50°F/10°C winter 50% ± 10% Negative pressure to the rest of the building N/A Libraries and Reading Areas Contain reference books, magazines, papers, or other types of reading materials. They are distinguished from file/record storage because the reading materials are meant to be accessed on a regular basis. Normally occupied spaces. 75°F/24°C summer 72°F/ 22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 (Continued, next page)
  • 25. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 23 of 37 Room Name Room Functions Description Thermostat- Setting Temp. (dB) F° / C° % Relative Humidity Pressure Relative to Atmosphere Air Quality Remarks Table 6.1A, continued Lobbies and Corridors Generally open areas at the main entrance to a building and may include waiting areas and receptionists desks. Corridors, also known as circulation, are hallways connecting various rooms in a building. Corridors are considered not normally occupied. Lobbies may be considered either normally or not normally occupied spaces. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Offices Space occupied by one or more persons and used for office-type work 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Plot/Printing Rooms Areas used for plotters and printers 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 I/O Rooms Contain I/O equipment. Not normally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) ISA 71.04 Record/File Rooms Storage areas for files and records. Not normally occupied. For HVAC design purposes, any normally occupied space listed as a record/file room should be treated as an office space. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) N/A Restrooms Rooms having one or more of the following: 1. Water closet 2. Urinal 3. Lavatory 4. Bidet Considered occasionally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% Negative pressure to the rest of the building ASHRAE Std. 62 (Continued, next page)
  • 26. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 24 of 37 Process Industry Practices Room Name Room Functions Description Thermostat- Setting Temp. (dB) F° / C° % Relative Humidity Pressure Relative to Atmosphere Air Quality Remarks Table 6.1A, continued Shower Rooms Areas for showering or bathing. They may be part of or adjacent to restrooms and/or change rooms. Considered occasionally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% Negative pressure to the rest of the building ASHRAE Std. 62 Storage Rooms/ Spaces Areas for general storage that do not fall into the category of file/record rooms or any other specific type of storage area such as solvent or chemical storage. Not normally occupied spaces. 80°F/26°C summer 50°F/10°C winter 50% ± 10% +0.05” (12.5 Pa) N/A Switchgear Rooms/MCC Rooms Contain all switchgear and MCC equipment such as transformer, breakers, starters, and panel boards. Not normally occupied. 77°F/26°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) N/A UPS Room Contains UPS equipment and/or battery charger. Not normally occupied. 77°F/26°C summer 72°F/22°C winter 50% ± 10% +0.10” (25 Pa) N/A Training Rooms Areas for training classes and may also be used as a meeting room. They are distinguished from conference rooms in that these rooms are occupied on a regularly scheduled basis and are considered normally occupied. 75°F/24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Waiting Rooms Separate walled-in rooms (as distinguished from waiting areas in a lobby). Occasionally occupied. 75°F/ 24°C summer 72°F/22°C winter 50% ± 10% +0.05” (12.5 Pa) ASHRAE Std. 62 Definitions: 1. Normally occupied - Any space or room in which a person or persons are assigned to be on a day-to-day basis 2. Not normally occupied - Any space or room in which a person or persons is not assigned on a day-to-day basis 3. Occasionally occupied - Any space or room in which a person or persons is not assigned on a day-to-day basis but at times may be fully occupied Notes: 1. The number values in this table shall be used unless otherwise specified by the owner. 2. Rooms contain non-active equipment; room temperature shall be maintained at 50°F (10°C) to 95°F (35°C), and humidity shall be below 85%. 3. EIA/TIA 569-A
  • 27. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 25 of 37 Table 6.1B. ISA Classification Gas Concentrations (Parts per Billion, by Volume) H2S SO2 , SO3 Cl2 NOx HF NH3 O3 ISA Class G1 ≤3 ≤10 ≤1 ≤50 ≤1 ≤500 ≤2 Note: ISA environmental classes, relative humidity <50% 6.2 Electrical Work 6.2.1 General All electrical work shall be in accordance with this Practice and local, state, and national codes unless otherwise required by contract or law. 6.2.2 Codes and Standards 6.2.2.1 Electrical work shall be in accordance with NFPA 70 (NEC). 6.2.2.2 Equipment, apparatus, or material required to be approved shall be approved by a nationally recognized testing laboratory. 6.2.3 Hazardous Areas The electrical hazardous area classification for the buildings shall be defined on the electrical area classification drawings. 6.2.4 Lighting 6.2.4.1 Building exterior electrical lighting and interior electrical lighting shall be provided unless otherwise specified in the PIP ARC01016 data sheet. Indoor lighting shall be incandescent, fluorescent, or high-intensity discharge unless otherwise specified in the PIP ARC01016 data sheet. Illumination levels shall be in accordance with API RP 540. 6.2.4.2 For occupied buildings, interior lighting shall include egress lighting and exit sign lighting with a secure power supply. A battery charger with a battery or an uninterruptible power supply (UPS) sized for a minimum of 90 minutes is the only acceptable secure power supply. 6.2.4.3 Lighting for each room shall be separately controlled by a general purpose snap-type switch located on the wall near each door entering the room. 6.2.5 Power 6.2.5.1 Unless otherwise specified in the PIP ARC01016 data sheet, power source for the building shall be a single 480-volt, 3-phase, 3-wire plus ground, 60-Hertz feeder brought to a point to be designated by the owner. This feeder is not a service unless so specified by the owner. The building shall be provided with transformers, panelboards, and other equipment as required to distribute power to all building lighting, receptacles, HVAC equipment, and other utility
  • 28. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 26 of 37 Process Industry Practices equipment. All equipment shall be located indoors except for transformers larger than 500 kVA. 6.2.5.2 All transformers inside buildings shall be dry type. 6.2.5.3 There shall be 120-volt, 2-pole, 3-wire, grounding receptacles supplied from 1-phase, 2-wire plus ground, 120-volt, 60-Hertz branch circuits in every room as would be required by the NEC if the room were part of a dwelling unit. Additional receptacles shall be provided for any cord-and-plug-connected building utility equipment. All receptacles shall be grounding type. 6.2.6 Grounding 6.2.6.1 Grounding shall comply with NEC requirements. Special grounding shall be provided when specified in the PIP ARC01016 data sheet. A grounding wire shall be provided with the building power feeder, which shall be bonded to the building grounding system. 6.2.6.2 Circuits shall have ground fault protection when required by NFPA 70 (NEC). 6.2.7 Lightning Protection Proper grounding is the primary method of lightning protection. 6.2.8 Wiring Methods 6.2.8.1 Interior wiring shall be in electrical metallic tubing (EMT) and flexible metallic tubing unless otherwise specified in the contract documents. Exterior wiring shall be in rigid galvanized steel conduit and liquid-tight flexible metal conduit unless otherwise specified in the contract documents. 6.2.8.2 All conductors shall be copper. 6.2.8.3 Wiring in rooms with finished walls and ceilings shall not be exposed. 6.2.9 Special Electrical Rooms Rooms primarily intended for electrical power equipment shall have locks on all doors. 6.2.10 Energy Management and Conservation 6.2.10.1 Electrical equipment, apparatus, and lighting shall be energy efficient and meet the requirements of IECC. 6.2.10.2 Exterior lights shall be controlled by photocells unless otherwise specified. 6.2.11 Accessibility Receptacle control switches and electrical equipment shall be readily accessible to all potential occupants of the room in accordance with ADA.
  • 29. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 27 of 37 6.3 Communications 6.3.1. General This communication design criteria section is intended to be used in conjunction with the following codes and standards: • IEEE 1100 • FCC, Part 68 • NFPA 70 • NFPA 72 • NFPA 75 • NFPA 232 • NFPA 2001 • TIA/EIA-568-B • TIA/EIA-569-A • TIA/EIA-570-A • TIA/EIA-606 • TIA/EIA-607 • UL 1863 • UL 1950 6.3.1.1 This section specifies requirements for communication rooms including the following: • Communications closet • Communications equipment room • Communications computer room • Communication entrance facilities and entrance room 6.3.1.2 The communications room can contain the equipment used in multiple communication systems: telephone, site access, security, hotlines, closed circuit television, bar coding, weather monitoring, etc.
  • 30. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 28 of 37 Process Industry Practices 6.3.2 Room Descriptions Figure 6.3 A. Communication Room Arrangements 6.3.2.1 Communications Closets The communications closet contains communications equipment, cable terminations, and associated cross-connect cable/wiring. Communications closets serve one floor area of one building. Communications closets can be shallow for non-active equipment or walk-in for active equipment. 6.3.2.2 Communication Equipment Rooms A communications equipment room provides space and maintains a suitable operating environment for large communications or computer equipment. Equipment rooms serve a building or multiple buildings. An equipment room may also serve as a communications closet. 6.3.2.3 Communications Computer Rooms The communications computer room contains programming applications, electronic equipment such as servers, switches, hubs, and routers that directly effect the business operations. This room
  • 31. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 29 of 37 shall be provided with environmental control and monitoring as required to protect the communications equipment. Rooms associated with the communications computer room shall be adjacent to qualified personnel. All buildings in a campus will connect with this one room. 6.3.2.4 Communication Entrance Facilities 6.3.2.4.1 The entrance facility consists of the communications service entrance to the building, including the entrance through the building wall, and continuing to the entrance room or space. The entrance room can be the communications closet, equipment room, and in some cases the communications computer room. 6.3.2.4.2 With small diameter 0.5-inch (12-mm) cables such as optical fiber and coaxial cable 2-inch (50-mm) conduits shall be used. With larger diameter cables, such as multi- pair copper cables and innerduct, 4-inch (100-mm) conduits shall be used. 6.3.2.4.3 As a minimum, two 4-inch (100-mm) conduits—with at least one spare 4-inch (100-mm) conduit—shall be considered for each entrance point. In addition, three 2-inch (50-mm) conduits shall also be considered. 6.3.2.4.4 A separate communications closet, or communications equipment room, on the same floor as the entrance facility shall be provided for buildings with a communications computer room. 6.3.3 Building Facility 6.3.3.1 Buildings shall be served by at least one communications closet or equipment room, with a minimum of one communications closet per floor. There is no maximum number of telecommunications closets that may be provided within a building. 6.3.3.2 Communication rooms shall not be shared with other services nor shall these rooms contain non-communications-related equipment. Piping, ductwork, pneumatic tubing, etc., other than for sprinkler systems, shall not pass through communication rooms. 6.3.3.3 All communications rooms shall be fitted with a locking mechanism to prevent the entry of unqualified personnel. 6.3.3.4 The communications closet and equipment rooms shall be located as close as possible to the center of the floor space being served, away from any threat of potential flooding. 6.3.3.5 The communications rooms shall not be below or adjacent to rooms that store or require running water. Avoid locations that are water hazards such as restrooms, break rooms (with sinks), and kitchens. If
  • 32. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 30 of 37 Process Industry Practices the communications closet is at risk of water ingress, a floor drain shall be installed. 6.3.3.6 In buildings that have a computer room, the communications closet or equipment room shall be adjacent. 6.3.3.7 In qualifying the communications room location, other key factors such as distances from required utilities, expansion of communication systems, building access for large equipment, and the distance limitations of the cable being installed for service must be considered. 6.3.3.8 Communication rooms shall not be located in any place that may be subject to equipment and other heavy machinery that causes vibration. 6.3.3.9 Sources of electromagnetic interference (EMI) shall be 10 ft (3000 mm) away from the communications equipment room and computer rooms. Examples of EMI sources include photocopying equipment, door openers, elevator systems, factory equipment, etc. 6.3.4 Room Criteria 6.3.4.1 Floor materials for communications rooms shall have antistatic properties. Carpet shall not be used. 6.3.4.2 Computer rooms shall have access floors unless otherwise specified in PIP ARC01016 data sheet. 6.3.4.3 Windows shall not be provided in communications rooms except as required for cable entry. 6.3.4.4 Communications rooms shall not be shared with other services nor shall these rooms accommodate pass-through of non- communications-related services such as piping, ductwork, pneumatic tubing, etc., except as required to service the room. 6.3.4.5 Lighting shall be mounted at an 8.5-ft (2600-mm) minimum above finished floor. Lighting shall not provide radio frequency interference (RFI) that could interfere with the communications equipment. Light fixture power shall not be from the same electrical distribution panel as that of the communications equipment. Computer areas shall be provided with emergency lighting. 6.3.4.6 Communications closets with active equipment and communications equipment rooms shall have a minimum of two dedicated 120-volt receptacle circuits. For convenience, duplex outlets shall be placed at 6-ft (1800-mm) intervals at a height of 6 inches (150 mm) above the floor and shall be identified and marked. 6.3.4.7 A dedicated power panel, serving power to communications equipment only, shall be installed. If the building has standby power, it shall be designed for the communications equipment room requirements including HVAC. Distribution panels that serve lighting fixtures shall not serve communications equipment.
  • 33. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 31 of 37 6.3.4.8 Communications computer rooms shall have a guarded push button at each door that initiates disconnection of power from specified equipment. This equipment includes computer room electronic equipment, servers, switches, hubs, etc. The operation of a push button shall close the fire/smoke dampers on the HVAC system. 6.3.4.9 Electrical power for the communications computer room shall be supplied from a minimum of two dedicated power panels. a. One panel shall be for receptacles. b. The second panel shall be for the junction boxes in the under- floor area. (A minimum of four dedicated 120-volt nominal, single-phase, non-switched, air-conditioning duplex electrical outlet receptacles, each on a separate 20-amp-branch circuit, shall be provided.) 6.3.4.10 The standby power for the buildings shall be designed to include the communications computer room equipment and HVAC systems. 6.3.5 Room Size 6.3.5.1 Additional communications closets shall be provided for each 10,000 ft2 (1000 m2) of building area and where a work area is more than 300 ft (91 m) from the closet or where the floor area served exceeds 10,000 ft2 (1000 m2). 6.3.5.2 Shallow communications closets shall be a minimum of 24 inches deep x 8 ft, 6 inches wide (600 mm x 2600 mm). Walk-in communications closets shall be a minimum of 4 ft, 6 inches deep x 4 ft, 6 inches wide (1370 mm x 1370 mm). Layouts shall be in accordance with TIA/EIA-569-A. 6.3.5.3 Communications equipment rooms shall be sized for the equipment to be used, including future space where required. Room size shall be approximately 0.75 ft2 (0.07 m2) for each 100 ft2 (9 m2) of work area, with a minimum size of 150 ft2 (14 m2). 6.3.5.4 Communications computer rooms shall be sized for the equipment to be used. The design shall anticipate future needs and technologies. Adjacent to the computer room shall be the support rooms such as recorded media storage, UPS, I/O stations, etc. Refer to NFPA 75, Appendix B, for a typical example. 6.3.6 Communications Closet HVAC 6.3.6.1 The communications closet shall maintain a temperature the same as that of the adjacent office area. Communications closet with active equipment shall maintain continuous HVAC at all times. If the building system cannot assure the continuous HVAC required, a stand-alone unit shall be provided. The environmental equipment may be located inside the room. Sensors and controls shall be placed 5 ft (1500 mm) above the finished floor, located in the communications closet.
  • 34. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 32 of 37 Process Industry Practices 6.4 Fire Protection and Safety 6.4.1 Building fire protection system shall be in accordance with Table 6.4A of this Practice. The design of the systems shall comply with the applicable NFPA standards and with this Practice. 6.4.1.1 Building Hydrants (Standpipes) a. Class I: Provide 2.5-inch (64-mm) hose connections to supply water for use by fire departments and those trained in handling heavy fire stream. b. Class II: Provide 1.5-inch (38-mm) hose stations for use primarily by the building occupants or by the fire department during initial response. c. Class III: Provide 1.5-inch (38-mm) hose stations to supply water for use by building occupants and 2.5-inch (64-mm) hose connections to supply a large volume of water for use by fire departments and those trained in handling heavy fire stream. Note: Class II is recommended for general requirements. 6.4.1.2 The design of the standpipe system is governed by building height, area per floor occupancy classification, egress system design, required flow rate and residual pressure, and the distance of the hose connection from the source(s) of water supply. 6.4.1.3 Automatic Water Sprinkler Systems Typically, the sprinkler systems shall be wet or pre-action type, depending on the building contents. In general, wet pipe systems shall be used in all cases except those where inadvertent water leakage could damage high-value or water sensitive contents. In such cases, dry pipe or pre-action sprinkler systems shall be used. Systems shall be designed in accordance with NFPA 13. 6.4.1.4 Portable Fire Extinguishers a. 17-lb (7.7-kg) ABC (ammonium phosphate dry chemical) extinguishers: These extinguishers shall be located at a maximum travel distance of 50 ft (15 m) to every equipment item to be protected. b. 15-lb (6.9-kg) CO2 extinguisher: These extinguishers shall be located at a maximum travel distance of 30 ft (9 m) from electrical equipment to be protected. c. 100-lb (45.3-kg) CO2 wheeled extinguisher: These extinguishers shall be in or near electrical substations and/or switchgear rooms operating with voltages greater than 600 volts and near emergency diesel generators. 6.4.1.5 Clean Agent Fire Extinguishing Systems a. A fixed fire suppression system based on an environmentally friendly agent shall be designed according to NFPA 2001.
  • 35. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 33 of 37 Table 6.4A. Building Fire Protection System Location Indoor Hydrant Sprinkler System Fixed Suppression System “ABC” Extinguisher CO2 Extinguisher a. Control rooms Yes1. b. Control room sub- floor (1) 2. Substation (4) 3. Local maintenance shops Yes (2) Yes (3) 4. Analyzer houses Yes Yes 5. Laboratories Yes (7) Yes (3) 6. Main workshops Yes (2) Yes (3) 7. Warehouses Yes Yes Yes (3) 8. All other buildings that contain offices, conference rooms, or dining areas Yes (2) Yes (3) 9. Computer suites and communication centers (1) Yes 10. Operator shelter Yes 11. Emergency generator house (6) Notes: 1. (a) Fixed fire suppression system based on an environmentally friendly agent shall be provided for the sub-floor space of control room, auxiliary room, communications room, and process control computer room. Such systems shall be designed and installed in full compliance with NFPA 2001. (b) A clean agent fire extinguishing system shall be used. Existing halon 1301 systems may be retained in service until the end of their expected working life. 2. (a) In the control building, other than the control room, computer room, and communications equipment room, whether a sprinkler system shall be or shall not be provided is determined by the use, fires separation, and occupancy of these areas. If these areas are provided with a sprinkler system, then the precaution shall be taken to prevent the discharge water from the sprinkler head to flow to the control room sub-floor. (b) In the local maintenance shops, a sprinkler system shall be provided for offices, corridors, conference/meeting rooms, document rooms, stairways, break rooms, restrooms, locker rooms, storage rooms, lunch rooms, instrument, workshops, instrument storage rooms, equipment rooms, and tool rooms. 3. Portable CO2 extinguishers, weighing 15 lb (6.9 kg), shall be provided for such rooms as follows: • Control rooms • Workshops • HVAC machine rooms • Electrical rooms/battery rooms • Switchgear rooms (less than 600 volts) 4. (a) One 100-lb (45.3-kg) CO2 extinguisher shall be provided for each section of primary substations and/or switchgear rooms (greater than 600 volts) and for transformers with non-flammable or combustible fluids. (b) Two 110- lb to 150-lb (50- to 70-kg) potassium bicarbonate-wheeled extinguishers shall be provided if flammable or combustible transformer fluid is used. 5. Dry chemical-type extinguishers shall be provided in the commercial kitchen hoods and in those areas containing deep fryers.
  • 36. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 34 of 37 Process Industry Practices 6. Both a 100-lb (45.3-kg) CO2 fire extinguisher and a 15-lb (6.9-kg) CO2 fire extinguisher shall be provided. 7. An automatic sprinkler system as per NFPA 45 shall be provided. 6.4.2 Building fire alarm detection and control systems shall be provided in accordance with Table 6.4B of this Practice. 6.4.3 Building gas detectors shall be provided as required to maintain a safe building environment. The type of gas detector to be used depends on the possible hazards and may include the following: • Combustible gas detectors • Toxic gas detectors • Oxygen analysis Note: If nitrogen is present and/or nitrogen back-up is provided in the area, oxygen analysis shall be provided. 6.4.4 HVAC System Interface When combustible gas and toxic gas sensors are provided, they shall be situated at the fresh air intake. The HVAC system shall be designed to interlock with these gas-monitoring systems. Table 6.4B. Building Fire Alarm Detection and Control Systems No. Building Fire Alarm Box Smoke Detector (3)(8) Heat Detector (8) Pressure Switch Audible/ Visual Alarm 1. Process control building Yes (1) (2) (6) (4a) (4b) Yes 2. Substation Yes Yes (6) Yes 3. Local maintenance buildings Yes (1) (6) (7) (4b) Yes 4. Utility control bldg. Yes (1) (2) (4a) (4b) Yes 5. Laboratories Yes Yes (4b) Yes 6. Central workshop Yes Yes Yes 7. Warehouse for spare parts Yes (1) Yes (4b) Yes 8. Warehouse for chemicals Yes Yes Yes (4b) Yes 9. Emergency center Yes (1) (2) (4b) Yes 10. Emergency generator house Yes (5) Yes Yes 11. Admin. and office areas Yes (1) (4a) (4b) Yes 12. HVAC machine room Yes Yes 13. Toilets and locker rooms Yes Yes 14. Operator's shelter Yes Yes (6) Yes
  • 37. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 35 of 37 Notes: 1. In principle, smoke detectors shall be used in all spaces and rooms except as indicated in Note 3. Actuation of smoke detectors shall result in shutdown of HVAC system and in sounding of audible devices in the protected areas for as long as the emergency situation exists. 2. Actuation of fixed fire suppression system is by a signal from cross-zones smoke detectors. 3. If a sprinkler system is installed, the smoke detection system shall not be provided for the sprinkler protected areas. 4. System actuation signal of automatic sprinkler system or fixed fire suppression system: (a) Fixed fire suppression system discharge (b) Automatic water sprinkler system actuation 5. Only in the control room 6. Only in lunch, break rooms, and battery rooms as applicable. Actuation of heat detectors shall result in shutdown of HVAC system and in sounding of audible devices in the protected areas for as long as the emergency situation exists. 7. Only in fabrication/fittings shops and machinery shop 8. Early response: An early response UL-listed smoke-detecting system by continually drawing air into the pipe network via high-efficiency aspirator system may be used to replace conventional smoke/heat-detecting system. 6.5 Plumbing 6.5.1 This section prescribes design criteria for systems listed below, including necessary piping, fittings, valves, hangers and supports, fixtures, equipment, insulation, and other trim, accessories, and related parts for the following systems: • Sanitary drainage, waste, and vent • Laboratory waste and vent • Distilled water, laboratory gas, air, vacuum, and steam system • Potable hot and cold water • Safety showers and plumbing fixtures • HVAC condensate drainage • Roof drainage system 6.5.2 All plumbing design shall comply with local plumbing code. In the absence of any locally adopted building code, the building plumbing system shall be designed in accordance with latest edition of the IPC and the following requirements unless otherwise specified on the building data sheet. 6.5.3 Safety Requirements High-temperature equipment and piping, so located as to endanger personnel or create a fire hazard, shall be properly guarded or covered with insulation. 6.5.4 Plumbing System Layout and Design 6.5.4.1 The plumbing system shall be laid out by determining proper elevations for all components of the system and using only the
  • 38. PIP ARC01015 Architectural and Building Utilities Design Criteria June 2002 Page 36 of 37 Process Industry Practices minimum number of bends to produce a satisfactorily functioning system. 6.5.4.2 Pipes shall be laid out to fall within partition, wall, or roof cavities. Furring shall not be used other than as allowed for in the building design. 6.5.4.3 Horizontal sanitary drainage piping 3 inches (75 mm) and larger shall be run at a minimum uniform grade of 1/8 inch per ft (3 mm per 300 mm) (1% slope). Any portion of the drainage system installed underground or below a basement or cellar shall not be less than 4 inches (100 mm) in diameter. New pipe shall match slope of existing pipe where new pipe ties into existing pipe. Horizontal water piping shall be run with an adequate pitch upwards in direction of flow to allow complete drainage. 6.5.4.4 Sufficient swing joint, ball joints, expansion loops, and devices shall be provided as necessary for a flexible piping system. 6.5.4.5 Piping shall be independently supported at pumps, coils, tanks, and similar locations so that the equipment shall not support the weight of pipe. 6.5.4.6 The drains from drip pans, relief valves, air vents, and similar locations shall be piped to spill over an open sight drain, floor drain, or other acceptable discharge point, and terminated with a plain end unthreaded pipe 6 inches (150 mm) above the drain. 6.5.4.7 Complete dielectric isolation shall be provided between ferrous and nonferrous metals. 6.5.4.8 Plumbing pipes shall not be inside the rooms with major electronic equipment. 6.5.5 Floor Drains 6.5.5.1 All floor drains shall be provided with primer connections, except shower stall floor drains do not require trap primer connections. 6.5.5.2 Floor drains shall be provided for toilet room, janitor closet, lockers area, shower stall, eyewash/safety shower, equipment room, and shop areas. 6.5.6 Cleanouts 6.5.6.1 Cleanouts shall be the same size as the pipes but not larger than 4 inches (100 mm). 6.5.6.2 Cleanouts shall be easily accessible. 6.5.7 Insulation and Pipe Coating 6.5.7.1 All indoor cold water lines shall be provided with anti-sweat insulation. 6.5.7.2 Underground steel piping shall be coated and wrapped.
  • 39. PIP ARC01015 June 2002 Architectural and Building Utilities Design Criteria Process Industry Practices Page 37 of 37 6.5.7.3 The following piping shall be insulated: a. Domestic hot and cold water piping b. Horizontal roof drains and overflow piping subject tocondensation. 6.5.8 Grease Interceptors Grease interceptors with automatic draw-off shall be provided for drains in areas where food is prepared. 6.5.9 Oil Interceptor Oil interceptors shall be provided for drains in maintenance shops or in similar rooms, near mechanical equipment where potential exists for oil leakage or spillage.