This document provides an overview of light weight panelized construction using rainscreen ventilated wall systems (RVRS) in multiple building projects. It begins with an introduction to key partners and speaker Blair Davies. The bulk of the document consists of 5 case studies of specific projects using different panel materials like ceramic, fibre cement, and recladding examples. It discusses attributes of RVRS, definitions, standards, and debates around pressure equalization. It raises unanswered questions and reviews relevant sections of the Ontario Building Code. The goal is to demonstrate how RVRS has been successfully used across different project types and materials at both new construction and renovation scales.
CONSTRUCTION TECHNOLOGY(For 4h semester B.Tech Degree Students Under Kerala Technological University)
VISHNU VIJAYAN
HOD-Department Of Civil Engineering
Baselios Mathews II College Of Engineering Sasthamcotta, Kollam,Kerala,INDIA.
New materials and technologies used in NISM MumbaiDr K M SONI
Some of the new materials and new technologies used during Construction of National Institute of Securities Markets, Mumbai are given. This was presented during expert talk in TKM College of Engineering, Kollam, Kerala.
CONSTRUCTION TECHNOLOGY(For 4h semester B.Tech Degree Students Under Kerala Technological University)
VISHNU VIJAYAN
HOD-Department Of Civil Engineering
Baselios Mathews II College Of Engineering Sasthamcotta, Kollam,Kerala,INDIA.
New materials and technologies used in NISM MumbaiDr K M SONI
Some of the new materials and new technologies used during Construction of National Institute of Securities Markets, Mumbai are given. This was presented during expert talk in TKM College of Engineering, Kollam, Kerala.
Mortarless Wall Systems Fay Block Materials offers a complete selection of two-sided, free-standing wall systems that consist of three standard concrete blocks along with a cap block. Using our mortarless wall systems, you can easily build walls in any size, shape, or layout, including custom curves, posts, corners, and more.
mortarless glass block systems
mortarless retaining wall systems
mortarless interlocking blocks
interlocking mortarless concrete blocks
mortarless brick veneer
mortarless brick siding
mortarless cinder block
mortarless manufactured stone veneer
interesting civil engineering topics
civil engineering topics for presentation
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seminar topics pdf
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FERROCRETE - MATERIAL AND CONSTRUCTION METHODSjagrutib22
Ferrocrete - introduction, ferrocement, history, difference between rcc and ferrocrete, applications, advantages and disadvantages, construction methods, use of ferrocrete technology and other information.
Cement and concrete are used interchangeably but there are technical distinctions and the meaning of cement has changed since the mid-nineteenth century when ferrocement originated. Ferro- means iron although metal commonly used in ferro-cement is the iron alloy steel. Cement in the nineteenth century and earlier meant mortar[2] or broken stone or tile mixed with lime and water to form a strong mortar.[3] Today cement usually means Portland cement,[4] Mortar is a paste of a binder (usually Portland cement), sand and water; and concrete is a fluid mixture of Portland cement, sand, water and crushed stone aggregate which is poured into formwork (shuttering). Ferro-concrete is the original name of reinforced concrete (armored concrete) known at least since the 1890s and in 1903 it was well described in London's Society of Engineer's Journal[5] but is now widely confused with ferrocement.
Ferrocement is a special form of concrete where there is no coarse aggregate but cement mortar is reinforced with wire mesh to obtain higher strength and low weight.
Shortcreting has proved to be the best method for construction of curved surfaces. Domes are now much easier to construct with the advent of shotcrete technology. Tunnel linings are also becoming easy with this technology. Not only are these but there a wide range of applications where this technology has been a leading one. This technical paper includes the concept of shotcrete and how it differs from conventional concrete. It also enumerates the different types of process involved in shotcreting i.e. dry mix process and wet mix process. Advantages of shotcrete and its applications in various fields like tunneling, canals, buildings etc. are specified in detail. This paper presents an overview of shotcreting technology along with its applications.
DEFINITION OF SHOTCRETE:-
Shotcrete is a mortar or high performance concrete conveyed through a hose and pneumatically projected at high velocity onto a backing surface. It is the force of this spraying action that leads to compaction of the concrete or mortar which then forms layers of concrete to the required thickness. Shotcreting has been an acceptable way of placing cementitious material in a variety of applications.
Usually patented polypropylene fibers are included in the shotcrete which increases the cohesive nature of the shotcrete through mechanically binding the cementitious materials together. This mechanism reduces the rebound waste that occurs through the shotcreting process and these fibers also resist plastic shrinkage and cracking through their ability to enhance the early stage tensile strength of concrete.
Shotcrete also gives better surface finishes and reduces surface tearing on non- linear sections. Cementitious material containing the poly propylene fibers resist cycles of freezing and thawing and also reduces the chances of water and chemical penetrations.
Autoclaved aerated concrete (AAC) block is a building material made of Portland cement, fine aggregates (fly ash or sand), water and an expansion agent in an autoclaving process heated under pressure which results in the production of air voids in the material, making it less dense, easy to cut/mould and better insulating
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This is the presentation used for the third of our tensile fabric webinars, a refresher programme for architects.
Webinar 3 is called 'London 2012 Games Case Study - The Basketball Arena and Shooting Ranges' and offers a behind the scenes look at how these two very different temporary structures were created - from initial design through to installation and completion.
The Basketball Arena was the largest temporary structure ever created for an Olympic Games and also the quickest structure to be built on the Olympic Park. The Shooting Ranges comprise of three cutting edge architectural masterpieces, unique temporary structures designed to leave no lasting trace after the event.
You can also watch recordings of the narrated webinar series, simply visit www.basestructures.com/portal/tensile-fabric-webinars.html.
For more information please visit our website www.basestructures.com
A hollow core slab refers to a precast slab that is prepared using prestressed concrete. It is generally used in the construction of floors for high-rise apartments or multistorey buildings.
Do's and Don't while using AAC blocks.
This presentation will educate you in using AAC blocks.
General practices to follow while using AAC blocks are illustrated
Flip through the following slides for EA's Thermally Broken Facades Webinar. TcLip™; Thermally Broken Subsystem minimizes thermal bridging; preserving a higher effective R value as prescribed by ASHRAE 90.1. TcLip™maximizes design freedom and supports a wide variety of thermally broken facades. Webinar recordings on a variety of topics are available on the Engineered Assemblies website.
Mortarless Wall Systems Fay Block Materials offers a complete selection of two-sided, free-standing wall systems that consist of three standard concrete blocks along with a cap block. Using our mortarless wall systems, you can easily build walls in any size, shape, or layout, including custom curves, posts, corners, and more.
mortarless glass block systems
mortarless retaining wall systems
mortarless interlocking blocks
interlocking mortarless concrete blocks
mortarless brick veneer
mortarless brick siding
mortarless cinder block
mortarless manufactured stone veneer
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
seminar topics pdf
best seminar topics for civil engineering
seminar topics for mechanical engineers
latest civil engineering seminar topics
FERROCRETE - MATERIAL AND CONSTRUCTION METHODSjagrutib22
Ferrocrete - introduction, ferrocement, history, difference between rcc and ferrocrete, applications, advantages and disadvantages, construction methods, use of ferrocrete technology and other information.
Cement and concrete are used interchangeably but there are technical distinctions and the meaning of cement has changed since the mid-nineteenth century when ferrocement originated. Ferro- means iron although metal commonly used in ferro-cement is the iron alloy steel. Cement in the nineteenth century and earlier meant mortar[2] or broken stone or tile mixed with lime and water to form a strong mortar.[3] Today cement usually means Portland cement,[4] Mortar is a paste of a binder (usually Portland cement), sand and water; and concrete is a fluid mixture of Portland cement, sand, water and crushed stone aggregate which is poured into formwork (shuttering). Ferro-concrete is the original name of reinforced concrete (armored concrete) known at least since the 1890s and in 1903 it was well described in London's Society of Engineer's Journal[5] but is now widely confused with ferrocement.
Ferrocement is a special form of concrete where there is no coarse aggregate but cement mortar is reinforced with wire mesh to obtain higher strength and low weight.
Shortcreting has proved to be the best method for construction of curved surfaces. Domes are now much easier to construct with the advent of shotcrete technology. Tunnel linings are also becoming easy with this technology. Not only are these but there a wide range of applications where this technology has been a leading one. This technical paper includes the concept of shotcrete and how it differs from conventional concrete. It also enumerates the different types of process involved in shotcreting i.e. dry mix process and wet mix process. Advantages of shotcrete and its applications in various fields like tunneling, canals, buildings etc. are specified in detail. This paper presents an overview of shotcreting technology along with its applications.
DEFINITION OF SHOTCRETE:-
Shotcrete is a mortar or high performance concrete conveyed through a hose and pneumatically projected at high velocity onto a backing surface. It is the force of this spraying action that leads to compaction of the concrete or mortar which then forms layers of concrete to the required thickness. Shotcreting has been an acceptable way of placing cementitious material in a variety of applications.
Usually patented polypropylene fibers are included in the shotcrete which increases the cohesive nature of the shotcrete through mechanically binding the cementitious materials together. This mechanism reduces the rebound waste that occurs through the shotcreting process and these fibers also resist plastic shrinkage and cracking through their ability to enhance the early stage tensile strength of concrete.
Shotcrete also gives better surface finishes and reduces surface tearing on non- linear sections. Cementitious material containing the poly propylene fibers resist cycles of freezing and thawing and also reduces the chances of water and chemical penetrations.
Autoclaved aerated concrete (AAC) block is a building material made of Portland cement, fine aggregates (fly ash or sand), water and an expansion agent in an autoclaving process heated under pressure which results in the production of air voids in the material, making it less dense, easy to cut/mould and better insulating
Base Structures Tensile Fabric Webinar 3: London 2012 Games Case Study - The ...Base Structures Ltd
This is the presentation used for the third of our tensile fabric webinars, a refresher programme for architects.
Webinar 3 is called 'London 2012 Games Case Study - The Basketball Arena and Shooting Ranges' and offers a behind the scenes look at how these two very different temporary structures were created - from initial design through to installation and completion.
The Basketball Arena was the largest temporary structure ever created for an Olympic Games and also the quickest structure to be built on the Olympic Park. The Shooting Ranges comprise of three cutting edge architectural masterpieces, unique temporary structures designed to leave no lasting trace after the event.
You can also watch recordings of the narrated webinar series, simply visit www.basestructures.com/portal/tensile-fabric-webinars.html.
For more information please visit our website www.basestructures.com
A hollow core slab refers to a precast slab that is prepared using prestressed concrete. It is generally used in the construction of floors for high-rise apartments or multistorey buildings.
Do's and Don't while using AAC blocks.
This presentation will educate you in using AAC blocks.
General practices to follow while using AAC blocks are illustrated
Flip through the following slides for EA's Thermally Broken Facades Webinar. TcLip™; Thermally Broken Subsystem minimizes thermal bridging; preserving a higher effective R value as prescribed by ASHRAE 90.1. TcLip™maximizes design freedom and supports a wide variety of thermally broken facades. Webinar recordings on a variety of topics are available on the Engineered Assemblies website.
Hot Melt Roofing Solution to Hiscox's new headquarters by Make Architects #Pe...SIG Design and Technology
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A presentation covering various aspects of Real Estate and construction.
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http://www.greenarchworld.com/
First-of-its-kind in the world Composite (GRP) Railway platforms, stairways, claddings and retention solutions.
Composite (GRP) Railway Stations and Solutions score over traditional materials in many ways:
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Faster project completion, as they are lightweight and easy to install.
Minimal passenger disruption and inconvenience due to faster installation.
Negligible to minimal maintenance required, as they don’t chip, break or crack easily.
Highest passenger safety as they have high slip resistance, non-conductive, etc.
Excellent for coastal areas as they are non-corrosive.
Resistances to wide range of chemicals, UV resistant and retain colour and look over the long term.
The product has been described as “game changing” by industry insiders and has won multiple awards.
Affordable Housing company in India WorldHaus Inc.WorldHaus
Mission: Make High-Quality Housing Affordable for Every Family
Vision: Tackle India’s Housing Crisis by Designing and Delivering One Million Homes With a Price and Amenities Within the Reach of India’s Lower and Middle Income Groups
Our Model: WorldHaus is a "Design and Build" construction technology firm that delivers low-cost housing solutions at prices 20-30% lower than existing nstruction methodologies, we achieve this through:
Working with our customers to design structures by maximiz ing the speed, efficiency, and strength through WorldHaus’ proprietary technology suite
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Various soil steel structures will be highlighted including Bridge-Plate, Multi-Plate, Bin-Wall and Sheeting as well as different wall materials used as end treatments.
Who Should Attend
Bridge / Structural Engineers
Road & Transportation Engineers
Road Superintendents
Provincial Departments of Transport
Earthworks & Highways Contractors
Mining Contractors
Mining Engineers
Municipal Engineers
Forestry Contractors
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Benefits and applications of buried plate structures
Design considerations
Choosing the right coating for the project application
End treatment options and selection criteria
Review of case studies and applications across Canada
Book Formatting: Quality Control Checks for DesignersConfidence Ago
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Quality control is vital to every industry. This is why every department in a company need create a method they use in ensuring quality. This, perhaps, will not only improve the quality of products and bring errors to the barest minimum, but take it to a near perfect finish.
It is beyond a moot point that a good book will somewhat be judged by its cover, but the content of the book remains king. No matter how beautiful the cover, if the quality of writing or presentation is off, that will be a reason for readers not to come back to the book or recommend it.
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In today's digital era, the dynamics of brand perception, consumer behavior, and profitability have been profoundly reshaped by the synergy of branding, social media, and website design. This research paper investigates the transformative power of these elements in influencing how individuals perceive brands and products and how this transformation can be harnessed to drive sales and profitability for businesses.
Through an exploration of brand psychology and consumer behavior, this study sheds light on the intricate ways in which effective branding strategies, strategic social media engagement, and user-centric website design contribute to altering consumers' perceptions. We delve into the principles that underlie successful brand transformations, examining how visual identity, messaging, and storytelling can captivate and resonate with target audiences.
Methodologically, this research employs a comprehensive approach, combining qualitative and quantitative analyses. Real-world case studies illustrate the impact of branding, social media campaigns, and website redesigns on consumer perception, sales figures, and profitability. We assess the various metrics, including brand awareness, customer engagement, conversion rates, and revenue growth, to measure the effectiveness of these strategies.
The results underscore the pivotal role of cohesive branding, social media influence, and website usability in shaping positive brand perceptions, influencing consumer decisions, and ultimately bolstering sales and profitability. This paper provides actionable insights and strategic recommendations for businesses seeking to leverage branding, social media, and website design as potent tools to enhance their market position and financial success.
Unleash Your Inner Demon with the "Let's Summon Demons" T-Shirt. Calling all fans of dark humor and edgy fashion! The "Let's Summon Demons" t-shirt is a unique way to express yourself and turn heads.
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https://www.alandix.com/academic/talks/offtheCanvas-IndiaHCI2024/
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Rear Ventilated Rain Screen OBEC Mar 2016
1. Case Studies of RVRS design; Use of
Light Weight Panelized Construction in
Multiple Projects
OBEC
March 2016
Blair Davies, P.Eng
VP GM Engineered Assemblies
- March 9, 2016page 1
2. Engineered Assemblies
“Unite the House of Design with The Field of Construction”
– Thermally Broken RVRS Facades
– Daylighting
– High performance Metal Roofs
Partners
» Etex - Imetco
» Composites Gurea - SRP Canada
» Formica - AWF
» Gentas - CPI Daylighting
>1000 projects; no warranty claims, no non payment for non performance
Sister company Praxy installation Ontario
- March 9, 2016page 2
3. Speaker
Blair Davies, P.Eng
– BaSc University of Waterloo – Civil Engineering
– MBA Schulich School of Business
– Building envelope business since 2008
– Buildings across Canada
- March 9, 2016page 3
4. Agenda
• Introduction – does all this matter?
• What matters
• Definition and history
– DIN 18516
– British Standards
• Pressure Equalization – the debate
• Case Study #1
– Parliament St Data Centre – ceramic
• Case Study #2
– McLean Park Towers – fibre cement
• Case Study #3
– 88 Sheppard, Minto – fibre cement
• Case Study #4
– 2 Virtue Street – fibre cement recladding
• Case Study # 5
– Addington Residence – ceramic recladding
• Unanswered questions
• Conclusion
• Ontario Building Code
• Discussion
- March 9, 2016page 4
8. Define RVRS
• Cladding stands off the moisture resistant surface
to create a drainage plane and ventilation cavity.
• Vertical cavity for stack effect and capillary break.
• The wall open top and bottom to allow ventilation,
• Intermediate gaps open or closed; aesthetic decision.
• Insulated or non-insulated.
- March 9, 2016page 8
Source: Wikipedia
11. 11
Key Attributes of RVRS Facades?
• Remove water and vapour in active, natural manner from assembly
• Exterior takes abuse of the weather - full heat, the sun, the wind…
• Ventilation helps the building AND the façade product
• Accommodates any amount of insulation
• Insulation is always drying - better effective R
• Simpler, more easily built and inspected - no caulking
• Lighter thinner systems than concrete and brick
• Unlimited choice in panel selection.
• Better energy efficiency than most curtain wall
• Less expensive than many other systems
12. History and Standards
• Ventilated façade in Europe
– DIN 18516 – German Construction Standard
• Specifies all key attributes
• Spacing behind panel minimum 20mm
– CWCT H92
– NBS British Construction Standard
• Canadian Construction Technology Update
– 1963 NRC
– 1999 CTU
– Cladding leakage area to Ventilation area suggested 10:1
• USA NIBS
- March 9, 2016page 12
13. DIN 18516
• Covers
– Scope and field of application
– Concepts
– Requirements
– Design loads, thermal effects and structural movements
– Structural analysis
– Protection of materials
– Testing of connectors, fixing and ties
– Documentation
– Inspection
- March 9, 2016page 13
14. NBS Section H92
• Vertical building envelope; Outer skin
• Airtight insulated backing wall, separate by ventilated cavity
• Key distinction is that curtain walling is usually the whole
envelope, while rainscreen cladding is the outer protective
layer of the envelope.
- March 9, 2016page 14
15. Business Opportunity
• Materials developed to leverage RVRS mostly from Europe
– High density fibre cement
– Glass reinforced concrete
– Phenolic
– Ceramic
– Porcelain
– Metals
– Stone laminates
– Wood panels
– Hybrids
• Subsystems
• Design
• Labour
- March 9, 2016page 15
16. RVRS suitable for all building types
HouseCondo HotelUniversity SchoolHospital
19. Pressure Equalization • Ideal
• Ambiguous
• Planning ≠ Actual
• Structural considerations
• Not part of European standards
- March 9, 2016page 19
Sources include: National Building Service UK 1-Jan-2010 “Rainscreen cladding; letting air in to keep rain out”
20. P.E. - compartmentalization
• Horizontal closures so air can get in, but can’t get out
• Seeing specifications with compartmentalization
• Some study that at façade corners and parapets this helps PE.*
• Europeans products do not recognize this practice
- March 9, 2016page 20
Source: MCA Whitepaper 11/2014 v2
NRC CTU no 17 1998
Graphic by Nichiha
21. Rain Screen Membrane
• Water resistant, water vapour permeable membrane
• Secondary drainage plane
• Aesthetic black reveal with long term UV resistance
for open joint systems
• Can be the deemed air barrier if sealed
• Installed directly behind cladding
- March 9, 2016page 21
22. Weather Membrane
§ For Closed Joint Systems (with no long term UV)
• High WVT 150 perms
• 120 g/m2
• Drainage Plane
• CCMC listed
• Air Barrier
Courtesy
25. Weather membrane UV
§ For Open Joint Wall Systems (long term UV)
• Long Term UV Resistance
l DIN EN 13859 (5,000 hours exposure <5% loss)
• Drainage Plane
• Air Barrier
courtesy
27. 27
Installation
Ø Attachment
l Over insulation, behind cladding
l Clips or system support, screws with plates
Ø Overlapping
l Shingle style with 6 inch overlap
Ø Seams
l Tape vertical seams and details
l Tape all seams in Air Barrier installations
31. Case Study 1
Data Centre
• Parliament St Data Centre
• Cladding, cavity, WB, Insulation, Thermally broken substructure,
AVB, framing.
• Effective R Value Goal 21
• Extruded Ceramic (35kg/m2) + Ceramic Baguettes
• Cavity dimension = 40mm vertical + 63mm.
• Insulation type = Roxul Cavity Rock 4” (100mm)
• WB type = SRP Airoutshield
• AVB type = Soprema
• Special conditions: designed for disaster conditions, so extreme
slab deflections expected
• Why: “Relate local masonry in modern way to reflect use of
building” WZMH
• Architect WZMH, GC Urbacon, Installer Flynn Canada
- March 9, 2016page 31
37. Case Study 3
88 Sheppard E, Minto
• HDFC, Vertical girts, cavity, WB, insulation and girts, AVB,
Framing or Concrete
• Effective R value not a goal
• HDFC 14.9 kg/m2 adhered with Dynamic Bond Adhesive
• Cavity dimension 25mm
• Roxul semi-rigid rockboard 40 2” and 3”
• Roxul curtain rock 5”SRP AirOutShield UV
• AVB type TBD
• Rafael + Bigauskas Architects; GC and Owner Minto; Installer Praxy Cladding
- March 9, 2016page 37
38. - March 9, 2016page 38
Details – need direction
41. Case Study 4
• 2 Virtue Street
• HDFC, girts, cavity, breather
membrane over brick
• Un-insulated
• HDFC 14.9 kg/m2
• Cavity dimension 25mm
• SRP AOS UV
• AVB poly inside studs
- March 9, 2016page 41
42. - March 9, 2016page 42
Renovation adds new vigour to a sagging
Toronto home Aug 2013
43. Case Study 5
Addington Residence U
Guelph
• Ceramic panels, system rails, weather
membrane, horizontal girts, sprayfoam insulation
on top of brick façade
• Ceramic 35 kg/m2
• Cavity dimension 20mm
• Spray foam 4” (100mm)
• SRP AOS non UV WB
• Blueskin SA behind girts, Spray foam is AVB
• Unique: Brick fastened back to block, and cavity
filled. Insulated rainscreen fastened to brick
façade
- March 9, 2016page 43
Larkin Architects; GC Harbridge and Cross; Installer AMNA
45. What would it take to make a real case
study – anyone?
• Instrumentation
• Long term study of RH in insulation
• Measurement during weather incident
- March 9, 2016page 45
46. Construction Best Practices
• 5 things need to be done right to have RVRS success with
panelized products eg high density fibre cement.
1. Ventilation top and bottom.
2. Vertical substructure for ventilation.
3. Panels allowed to move for thermal and for building
movement, typically with fixed and floating points.
4. Substructure spacing set by live and dead loads.
5. Reasonably true wall or adjustable substructure
- March 9, 2016page 46
47. Unanswered questions
• What happens to wet insulation over long term?
• Why isn’t metal panel / ACP installed as RVRS?
• Why does OBC not cover topic completely?
• Why are product choices in Canada limited?
- March 9, 2016page 47
48. Conclusion
• RVRS Façade a significant design choice for aesthetic and
envelope performance reasons
• Engineered extensively, mostly in Europe
• Business opportunity for Canadians
• A few things need to be done right, but reasonable for most
cladding trade companies to learn
• Thankyou.
- March 9, 2016page 48
49. OBC
Review
• Part 4 Structural
– All systems can be designed for all Canadian loads by changing
spacing, gauge and material of substructure.
– Seismic testing available for heavier facades eg ceramic. No
call yet for testing of phenolics, fibre cement, metal panel
– Panels themselves designed to pass live loads back to
substructure, not provide any structural role to the building.
• Part 5
– 5.1.4.2 Resistance to Deterioration
– CSA S478 Durability of Buildings
– 5.2.2.1 Determination of Structural loads – comply
– 5.3.1 Thermal resistance – not the panels, just the insulation
layer. Expectation is cavity has higher or lower temp than
outside, improving energy usage – needs proving.
• Important to design due point in right place between AVB and
Weather membrane
• Penetration detailing essential – thermal bridging and air transfer
to be eliminated
– 5.4.1 Air Barrier – at least two layers of protection, insulation
may offer another or replace a barrier.
- March 9, 2016page 49
50. OBC
• 5.4.1.2 Air Barriers CAN/ULCS741
• 5.5.1.1 (1) assemblies shall be such that they control vapour
diffusion or permit venting to the exterior so as to minimize
accumulation of condensation in the building component or
assembly.
• 5.6.1 Protection from Precipitation
– Except as provided in Sentence (2), where a building
component or assembly is exposed to precipitation, the
component or assembly shall,
• (a) minimize ingress of precipitation into the component or
assembly, and
• (b) prevent ingress of precipitation into interior space.
– (2) Protection from ingress of precipitation is not required
where it can be shown that such ingress will not adversely
affect any of ….
• 5.6.2 Sealing and drainage – reads like sealing is good. May
have misguided intentions.
- March 9, 2016page 50
51. OBC • Part 9 is different
– 9.20.13. Control of Rain Water Penetration
– 9.25.3. Air Barrier Systems
– 9.25.4. Vapour Barriers
– 9.25.5. Properties and Position of Materials in Building
Envelope
– 9.27. Cladding TBD
- March 9, 2016page 51
52. Rear Ventilated Rain Screen
(Moisture Management)
Drainage and ventilation
Some water gets
in, and then
drains out.
Condensation
and water vapour
vented to
exterior.
53. Alternatively – Single Skin Construction. Water always
gets in causing deterioration
Crack
54. Drained cavity Rainscreen eg Masonry
• Masonry uses Rainscreen term – different
than RVRS
• Drainage of water that penetrates the
brick is allowed to drain out
• Limited to no ventilation; closed top and
bottom of wall.
• Less active plenum; reducing benefit of
ventilation
• Constructability issues with ensuring
drainage is working
• Heavier, more steps to build
- March 9, 2016page 54
56. RVRS
(Temperature Regulation)
When the outside temperature is HOT, the ventilated rain
screen cladding has a cooling effect on the building
• Most of the sun’s rays are reflected
• Ventilating effect of the air gap
57. RVRS
(Temperature Regulation)
When the temperature is COLD outside the same process occurs:
• Most of the cold air is
reflected by the exterior
architectural panel
• The remaining cool air will
partially dissipate by the ventilating
effect of the air gap between the
architectural panel and the structural wall
• Insulation is protected, so will remain effective