Wood Frame Envelopes - Building Technology, 1999, Canada Mortgage and Housing Corporation. All rights reserved

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زبان: English 
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قیمت کتاب (تومان) : 47,000

Wood Frame Envelopes - Building Technology, © 1999, Canada Mortgage and Housing Corporation. All rights reserved. CMHC information:
Tel: 1 800 668-2642
Fax: 613 748-4069
Outside Canada: 613 748-2003
Web site: www.cmhc-schl.gc.ca Table of Contents 1 / Introduction
Purpose of the Guide 1-1
History 1-1
Notice to Designers 1-2
2 / Wood in Construction
Characteristics of Wood 2-1
Wood Frame Construction 2-3
Evolution of the Building Envelope 2-4
3 / Heat Transfer
Heat Flow 3-1
Thermal Insulation 3-1
Thermal Bridging 3-2
Optimizing Thermal Performance 3-4
4 / Moisture Transfer
Sources of Moisture 4-1
Moisture Movement 4-1
5 / Moisture Control
Moisture in Construction 5-1
Moisture Deflection 5-1
Drainage 5-12
Drying 5-13
Durability 5-13
6 / dimensional Change
How Dimensional Change Occurs 6-1
Managing Dimensional Change 6-4
Compatibility with Other Materials 6-5
7 / Details
Wall Assembly A–Basic Stud Wall with Polyethylene Air
Barrier and Vapour Retarder 7-3
Wall Assembly B–Exterior Insultation System with Airtight
Drywall Approach (ADA) 7-10
Wall Assembly C–Exterior Airtight Sheathing Element (EASE) 7-17
Wall Assembly A, B and C (Below Grade) 7-23
Window Openings 7-26
Cantilevered Floors 7-32
Balconies 7-38
Wheelchair Accessibility 7-48
Party Walls and Fire Walls 7-52
8 / Specifications
Section 06100–Rough Carpentry 8-2
Section 06192–Prefabricated Wood Trusses 8-6
Section 07200–Insulation 8-9
Section 07212–Subgrade Insulation 8-13
Section 07900–Sealants, Gaskets and Air Barrier Membranes 8-14
Section 09250–Gypsum Wallboard 8-18
9 / Quality Control
Responsibilities 9-1
Quality Control and Quality Assurance 9-2
Inspection 9-3
Steps for Quality Assurance 9-3
Site Inspection Checklist 9-4
Airtightness 9-6
10 / Maintenance and Repair
General Inspection 10-2
Repair 10-3
References
References R-1
Acknowledgement R-3
Appendix A–CAD usage
Overview A-1
Conventions Used A-2
list of tables
Table 2.1: Shrinkage of Green Wood 2-3
Table 3.1: Thermal Resistance 3-2
Table 5.1: Air Permeability Rates of Selected Building Materials 5-3
Table 5.2: Water Vapour Permeance of Common Materials 5-5
Table 7.1: Characteristics of Sample Wall Assemblies 7-2
Table 10.1: Estimated Life Expectancy of Wood Frame
Construction Components 10-1
Table 10.2: Building Inspection Checklist 10-4
list of FIGURES
Figure 2.1: Cellular structure of wood 2-2
Figure 2.2: Wood shrinkage and moisture content 2-4
Figure 2.3: Directional wood shrinkage 2-4
Figure 2.4: Grade stamps 2-5
Figure 2.5: Fibre saturation and wood cell structure 2-5
Figure 2.6: Components of a wood frame structure 2-6
Figure 3.1: Thermal bridging 3-3
Figure 3.2: Super insulation systems 3-4
Figure 4.1: Air leakage and vapour diffusion 4-2
Figure 4.2: Penetration of wind-driven rain 4-4
Figure 4.3: Rain and the effects of gravity 4-5
Figure 4.4: Air pressure difference driving moisture
through the wall 4-6
Figure 4.5: Capillary action 4-6
Figure 4-6: Air pressures caused by wind 4-7
Figure 4.7: Stack effect and air leakage 4-8
Figure 4.8: Mechanical exhaust creates a negative pressure,
drawing air in through the building envelope 4-8
Figure 5.1: Airtight Drywall Approach (ADA) 5-7
Figure 5.2: External Airtight Sheathing Element
(EASE) Approach 5-8
Figure 5.3: Pressure-equalizing rainscreen reduces
moisture entry (Airtight Drywall Approach) 5-10
Figure 5.4: How to obtain a pressure-equalized wall cavity 5-11
Figure 5.5: Corner compartmentalization between brick
cladding and siding 5-12
Figure 5.6: Fungal growth in wood 5-14
Figure 5.7: Speeding up the drying process for framing lumber 5-15
Figure 6.1: Wood shrinkage and moisture content 6-1
Figure 6.2: Shrinkage changes in wood products 6-2
Figure 6.3: Equilibrium moisture content (per cent),
relative humidity and temperature 6-3
Figure 6.4: Truss uplift 6-5
Figure 6.5: Floating corners 6-5
Figure 6.6: Steel column within wood framing 6-6
Figure 6.7: Separation of masonry party wall and exterior
wood framed wall 6-7
Figure 6.8: Balconies on steel columns 6-8
Figure 6.9: Wood frame with brick veneer and cap flashing 6-9
list of DETAILS
(All details are vertical sections except where noted)
Detail 1: Brick Veneer Wall at Foundation 7-5
Detail 2: Brick Veneer Wall at Header 7-6
Detail 3: Brick Veneer Wall at Roof 7-7
Detail 4: Corner, Horizontal Section 7-8
Detail 5: Interior Partition, Horizontal Section 7-9
Detail 6: Section at Stair Stringer 7-12
Detail 7: Wood Siding Wall at Foundation 7-13
Detail 8: Wood Siding Wall at Floor 7-14
Detail 9: Wood Siding Wall at Roof 7-15
Detail 10: Corner, Horizontal Section 7-16
Detail 11: Stucco Clad Wall at Foundation 7-19
Detail 12: Stucco Clad Wall at Floor 7-20
Detail 13: Stucco Clad Wall at Roof 7-21
Detail 14: Corner, Horizontal Section 7-22
Detail 15: Foundation Wall at Slab 7-24
Detail 16: Foundation Wall at Slab 7-25
Detail 17: Window Opening, A 7-27
Detail 18: Window Opening, B 7-29
Detail 19: Window Opening, C 7-31
Detail 20: Cantilevered Floor, A 7-33
Detail 21: Cantilevered Floor, B 7-35
Detail 22: Cantilevered Floor, C 7-37
Detail 23: Column-Supported Balcony with
Brick Veneer 7-39
Detail 24: Column-Supported Balcony with
Siding Veneer 7-41
Detail 25: Attached Balcony with Stucco Cladding 7-43
Detail 26: Balcony Over Heated Space, A 7-45
Detail 27: Balcony Over Heated Space, B 7-47
Detail 28: Wheelchair-Accessible Balcony 7-49
Detail 29: Wheelchair-Accessible Entrance Door 7-51
Detail 30: Party Wall, Horizontal Section 7-53
Detail 31: Fire Wall, Horizontal Section 7-55
Detail 32: Fire Wall 7-56