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This document discusses an investigation into cost, delay, and labor problems associated with pre-engineered building (PEB) structures. It summarizes findings from a literature review and survey of PEB contractors. Key findings include: 1) Financial issues for contractors arise due to irregular cash flow from delayed and insufficient payments, 2) Delays are commonly caused by late material arrival or civil works overlapping erection work, delaying projects, and 3) Labor issues include long work hours, lack of training, and improper salary payments creating financial problems for workers. Addressing these contractor and labor issues could help improve productivity and reduce delays and costs for PEB projects.
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- For the case study building, a work breakdown structure is created for the conventional construction method. This shows it would take 1829 days and cost Rs. 19,170,983.1.
- A work breakdown structure is then created for the building using some prefabricated elements like walls, windows, doors, and bathrooms. This is analyzed to see the impact on time and cost compared to the conventional method.
This document is a curriculum vitae for S. Sudhakar, a mechanical engineer with 26 years of experience in product design, development, and team management. He is currently leading new product development at C&S Electric. Previously he held roles managing teams and projects at Alfanar Electric Systems and GE, where he received several awards for his work developing circuit breakers and other electrical products.
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Kenrick Ramos is a civil/structural engineer from the Philippines with over 9 years of experience in structural design and analysis. He has worked on projects in various industries including oil and gas, petrochemical, and manufacturing. He is proficient in structural design software like STAAD Pro and AutoCAD. Ramos has a bachelor's degree in civil engineering and is a licensed civil engineer in the Philippines.
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Don Dufour is an experienced engineering management professional with a record of successfully leading engineering teams and projects. He has over 25 years of experience managing projects from concept through commercialization. Most recently, he was the Engineering Manager at Andrew Corporation, where he managed capital expansion projects up to $15 million and led cost reduction initiatives saving $3-6 million annually. He has extensive experience directing global facility expansions and relocations.
1. The document discusses retrofitting an existing residential building in Nirlon colony with G+5 stories to increase its load capacity and resistance.
2. It describes evaluating the building's existing load and moment capacities, and retrofitting structural elements like beams and columns to meet required load capacities.
3. Methods discussed include wrapping beams and columns with carbon fiber sheets, adding shear walls, and assessing the building using software before and after retrofitting.
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This document presents a comparative study of codal provisions for the design of pre-engineered buildings (PEBs) according to the Indian standard IS 800-2007 and American standards MBMA-2002 and AISC-89. PEBs are steel structures where the members are prefabricated off-site and assembled on-site. The study analyzes and designs an industrial warehouse with rectangular and tapered built-up sections. Results show that under the Indian code, a structure with tapered sections weighs less but has higher deflections compared to one with rectangular sections. Analysis of the same structure according to American standards yields less steel usage for both section types.
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
1. Prefabricated construction systems in India-
Precast Status and needed Impetus
Prof. S. K. Singh
Sr. Principal Scientist & Professor, AcSIR
CSIR-Central Building Research Institute
Roorkee-247 667, Uttarakhand, India
2. Outline
• Introduction
• Issues
• Affordable Housing
• Why Prefabrication?
• Worldwide Status
• Prefab Technologies
• Sustainable Approach
• Advantages &
Disadvantages
• Summary
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
3. Questions to be Answered
Is it
sustainable?
What are the
benefits?
Why prefabricated
construction system?
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
5. Problems in India
Affordable Housing system is the need of today
The Ministry of Housing
estimated a housing
shortage of 20 million
houses ,with 99 percent
in the economically
weaker and lower income
groups.
Source: Ministry of housing(July 2017)
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
8. Introduction
“The partly/fully assembled and erected building, of
which the structural parts consist of pre-fabricated
individual units or assemblies using ordinary or
controlled materials, including service facilities; and
in which the service equipment may be either
prefabricated or constructed in-situ”.
Source: IS 15916:2010
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
11. Prefabrication in India
Emergence of Hindustan Housing Factory in
1950s
Partially prefabricated system developed by CSIR-
CBRI joist and plank system in Early 1980’s
Pradhan Mantri Awas Yojna (PMAY) launched on
25th June 2015
Rural housing which launched on 1st April, 2016
16 innovative pre-fabricated construction
systems adopted /developed
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
12. Status in India
Innovative technologies for
affordable housing
Techniques adopted in ancient
time
Large scale adoption of
prefabrication reduces cost
• Prasher et al.
(2016)
• BMTPC 2017
• Palanichamy et al.
(2002)
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
13. Worldwide Status
Improving the performance of
company by identifying the gaps
Sustainable construction method
Management of prefabricated
construction (MPC)
• Steinhardt et al.
(2016)
• Li et al. (2014)
• Dave et al. (2017)
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
14. Pre-cast Roofing Solutions
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
Pre-fab Brick Panels
Brick Arch Panel
RCC Planks and Joists
Ferro-cement Channels
Baffle Unit
Ribbed Units
15. Pre-cast RC Planks & Joists System
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
17. Pre-cast Roofing Solutions
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
Technology Embodied Energy /10 sqm of roof in Mega Joules
Cement Steel Aggregate Total/sq.m saving
RCC Slab 2100 2400 600 5,100 0
RC Plank & Joist 1,617 2064 444 4,125 975
RC Ribbed Slab 1,113 2,064 318 3,595 1,505
RC Channel Unit 1,344 2,352 384 4,080 1,020
L-pan units 1,155 1,320 330 2,805 2,295
Brick panel & RC
JoistBricks: 1,220 MJ
1,800 1,984 140 5,144 - 44
18. Pre-cast RC Planks & Joist System
The floor / roof is constructed with precast RC
joist and precast RC planks.
The size of precast RC plank is 300 mm wide x 30
to 60 mm thick x up to max. 1500 mm long;
precast RC joists 150x150 mm in cross-section
and up to 4.2 m long.
The components are produced on casting
platform at construction site.
As soon as the walls reach the floor/roof level, the
components are created, and partly filled with
concrete to form the floor roof.
This results 20% saving in overall cost, 25% in
cement and 10% in steel as compared to
conventional R.C. slab floor/roof.
19. SK Singh, CSIR-CBRI,
Roorkee
Pre-cast RC Planks & Joist System
Suitable For Single/Multi Storied
Houses
Economical to RCC slab
Saves shuttering, construction
time & materials
Manual handling of components
Amenable to entrepreneurship
development
Widely accepted in cost effective
housing
Conventional water proofing
methods
20. Standards used
Country Codes
New Zealand Standards New Zealand 1995 covers many
aspects of seismic designs,
Precast R.C. structures
U.S.A. Design Guides and Manuals by Precast/Pre-
stressed concrete Institute
Canada CPCI (Canadian Pre-stressed Research
Institute) Design Handbook;
NBCC (National Building Code of Canada)
Japan Design and construction of precast R.C.
buildings by AIJA
(Architectural Institute of Japan)
Mexico Mexico City Building Code
India IS 15916: Building Design and Erection using
Prefabricated Concrete –Code of Practice
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
21. White Space Mapping
2255
294 294
110 70 68 41
0
500
1000
1500
2000
2500
No.
of
scientific
publications
World USA China Germany Italy Canada India
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
24. Precast sandwich panel system
Advanced Building System
EMMEDUE (Expanded
polystyrene core panel)
Rapid
Panels
Glass Fibre Reinforced
Gypsum (GFRG)
Panel System
Concrete
wall Panel
System
QuickBuild
3D Panels
Reinforced
EPS Core
Panel
System
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
26. Light gauge steel structural system
• Light Gauge Steel
Framed Structure
1.LGSFS
• Light Gauge Steel
Framed Structure
with Infill
Concrete Panels
2.LGSFS-
ICP
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
27. Steel Structural Systems
1
• Factory Made Fast Track
Building System
2
• Speed Floor System
3
• Composite Engineered Steel
Building Solution System
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
28. Precast Concrete Construction Systems
Industrialized 3-S system
Waffle crete slab
Precast Large Concrete Panel System
3D Monolithic Volumetric Construction
System
Types
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
29. Prefabrication: A Sustainable Approach
Sustainability: Meets the needs of the present without
compromising the ability of future generations.
Prerequisites :
Judicial use of construction materials there by
conservation of natural resources.
Use of products that avoid toxic or other emissions.
Reduction in waste materials during construction &
utilizing C & D wastes in construction.
Reducing emissions during the production of
construction materials.
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
30. Prefabrication: A Sustainable Approach
Using more durable materials in buildings thereby
requiring lesser maintenance cost.
Use of energy efficient building materials and
products that save energy or water .
Use of products that contribute to a safe, healthy
built environment.
Use of materials which can be recycled.
Use of construction system minimizing air, water
and noise pollution during construction.
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
31. Advantages
Faster construction and low labour costs.
Prefabrication allows for year-round construction.
Mechanization in prefabricated construction
ensures precise conformity to building code
standards and greater quality assurance;
Less on-site waste ,reduced by about 40%(Vivian et
al. 2006).
Less theft of material/equipment.
less property damage due to vandalism.
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
32. Worker safety higher.
Computerization in production process.
Quality control and factory sealing.
More comfortable work environment.
Improvement in efficiency and productivity of work
force.
Prefab companies are more likely to have quality-
control programs implemented into their
manufacturing process (Phil Mitchell 2009).
Advantages
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
34. Summary
Pradhan Mantri Awas Yojna (PMAY)- Driving force
Technology not widespread in India –
- lack of proper guidelines
- awareness and
- skilled labours
Identifying new emerging construction systems
Prefabricated affordable housing for rural and urban
poor
low cost and quality conforming
Improve in the standardisation
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
35. Emerging Trends in Housing construction
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
Precast construction
Tunnel form construction
Large area formwork construction
Lightweight concrete construction
Cold-Formed Steel (CFS) housing system
GFRG building system
EPS Panel system
44. Pre-stressed Precast Prefab Technology Using Hollow Core
Slab, Beams, Columns, Solid Walls, Stairs
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
45. Precast Concrete Panel System
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA
46. Technology Using Expanded Steel Mesh Panels,
Polystyrene Beads & Alleviated Concrete
CSIR-Central Building Research Institute, Roorkee-247 667, INDIA