AWC – PDF Standards Store

AWC NDS 2018 Supplement

Sun, 20 Oct 2024 06:12:37 +0000

None

PDF Catalog

PDF Pages	PDF Title
1	Front Cover
3	Title Page
4	Copyright
5	Introduction
7	TABLE OF CONTENTS LIST OF TABLES
9	SAWN LUMBER GRADING AGENCIES
10	1.1 List of Sawn Lumber Grading Agencies Rules for which grading Rules Writing Agencies is authorized Non-Rules Writing Agencies
11	SPECIES COMBINATIONS
12	2.1 List of Sawn Lumber Species Combinations
16	2.2 List of Non-North American Sawn Lumber Species Combinations
17	2.3 List of Structural Glued Laminated Timber Species Combinations
19	SECTION PROPERTIES
20	3.1 Section Properties of Sawn Lumber and Structural Glued Laminated Timber 3.1.1 Standard Sizes of Sawn Lumber 3.1.2 Properties of Standard Dressed Sizes 3.1.3 Definitions Figure 1A Dimensions for Rectangular Cross Section
21	Table 1A Nominal and Minimum Dressed Sizes of Sawn Lumber
22	Table 1B Section Properties of Standard Dressed (S4S) Sawn Lumber
24	Table 1C Section Properties of Western Species Structural Glued Laminated Timber
31	Table 1D Section Properties of Southern Pine Structural Glued Laminated Timber
39	REFERENCE DESIGN VALUES
40	Table 4A Adjustment Factors
41	Table 4A Reference Design Values for Visually Graded Dimension Lumber (2″ – 4″ thick)
47	Table 4B Adjustment Factors
48	Table 4B Reference Design Values for Visually Graded Southern Pine Dimension Lumber (2″ – 4″ thick)
50	Table 4C Adjustment Factors
51	Table 4C Reference Design Values for Mechanically Graded Dimension Lumber
53	Table 4C Footnotes
54	Table 4D Adjustment Factors
55	Table 4D Reference Design Values for Visually Graded Timbers (5″ x 5″ and larger)
60	Footnotes to Table 4D
61	Table 4E Adjustment Factors
62	Table 4E Reference Design Values for Visually Graded Decking
65	Table 4F Adjustment Factors
66	Table 4F Reference Design Values for Non-North American Visually Graded Dimension Lumber (2″ – 4″ thick)
70	Table 5A Adjustment Factors
71	Table 5A Reference Design Values for Structural Glued Laminated Softwood Timber
72	Table 5A Expanded – Reference Design Values for Structural Glued Laminated Softwood Timber Combinations
74	Table 5B Adjustment Factors
75	Table 5B Reference Design Values for Structural Glued Laminated Softwood Timber
76	Table 5C Adjustment Factors
77	Table 5C Reference Design Values for Structural Glued Laminated Hardwood Timber
78	Table 5D Adjustment Factors
79	Table 5D Reference Design Values for Structural Glued Laminated Hardwood Timber
81	Tables 6A and 6B Adjustment Factors
82	Table 6A Reference Design Values for Treated Round Timber Piles Graded per ASTM D25 Table 6B Reference Design Values for Round Timber Construction Poles Graded per ASTM D3200
86	Back Cover

AWC SDPWS withCommentary 2021

Sun, 20 Oct 2024 05:25:34 +0000

ANSI / AWC SDPWS-2021 – Special Design Provisions for Wind and Seismic standard provides criteria for proportioning, designing, and detailing engineered wood systems, members, and connections in lateral force resisting systems. Engineered design of wood structures to resist wind or seismic forces is either by allowable stress design (ASD) or load and resistance factor design (LRFD). Nominal shear capacities of diaphragms and shear walls are provided for reference assemblies.

PDF Catalog

PDF Pages	PDF Title
1	SDPWS 2021 TOC – Ch3 Dig
21	SDPWS 2021 CH 4 Dig
59	SDPWS 2021 Appendix A Dig
61	SDPWS 2021 Appendix B Dig
67	SDPWS 2021 References Dig
69	SDPWS 2021 Commentary TOC-3 Dig
149	AWC_ReportCover2021-SDPWSBacknDig

AWC FDS 2021

Sun, 20 Oct 2024 05:25:32 +0000

Since 2001, the National Design Specification for Wood Construction has provided provisions for the structural design of unprotected wood members exposed to a standardized ASTM E119 fire exposure. The 2021 Fire Design Specification for Wood Construction (FDS) contains these provisions, and also provides calculation procedures to address the added fire resistance and thermal benefits of protection provided by additional wood cover, gypsum panel products, and insulation. The additional calculation provisions have been developed to provide standardized methods of calculating thermal separation and burn-through requirements as required in ASTM E119 and as provided in AWC’s Technical Report 10: Calculating the Fire Resistance of Exposed and Protected Wood Members (TR10).

PDF Catalog

PDF Pages	PDF Title
1	Cover
3	FOREWORD
10	CHAPTER 1: GENERAL REQUIREMENTS FOR FIRE DESIGN 1.1 General 1.2 Terminology
15	1.3 Notation
18	1.5 Heavy Timber
21	1.6 Material Combustibility
22	1.7 Fire-Resistance-Rated Wood Members and Assemblies
26	CHAPTER 2: IGNITION AND FLAMMABILITY 2.1 General 2.2 Ignition Resistance 2.3 Flame Spread Performance of Wood Products
27	2.4 Vertical and Lateral Flame Propagation
28	2.5 Firestopping, Fireblocking and Draftstopping
33	CHAPTER 3: FIRE RESISTANCE 3.1 General
34	3.2 Calculation of Structural Fire Resistance of Exposed Wood Members
39	3.3 Protection of Structural Wood Members and Wood Assemblies
42	3.4 Calculation of Structural Fire Resistance Time of Protected Wood Members and Wood Assemblies 3.5 Calculation of Thermal Separation Time
43	3.6 Calculation of Burn-Through Time
44	3.7 Tested Fire-resistance-rated Wood Assemblies 3.8 Component Additive Method for Wood Assemblies
50	3.9 Design of Protected Wood Connections
52	REFERENCES
55	COMMENTARY
56	FDS Commentary: Chapter C1 C1.1 General C1.2 Terminology
57	C1.3 Notation
58	C1.4 Materials Standards C1.5 Heavy Timber C1.6 Material Combustibility
59	C1.7 Fire-Resistance-Rated Wood Members and Assemblies
63	CHAPTER C2: IGNITION AND FLAMMABILITY C2.1 General C2.2 Ignition Resistance C2.3 Flame Spread Performance of Wood Products
65	C2.4 Vertical and Lateral Flame Propagation C2.5 Firestopping, Fireblocking and Draftstopping
67	CHAPTER C3: FIRE RESISTANCE C3.1 General
69	C3.2
74	C3.3 Protection of Structural Wood Members and Wood Assemblies
78	C3.4 Calculation of Structural Fire Resistance Time of Protected Wood Members and Wood Assemblies
79	C3.5 Calculation of Thermal Separation Time
80	C3.6 Calculation of Burn-Through Time C3.7 Tested Fire-resistance-rated Wood Assemblies
81	C3.8 Component Additive Method for Wood Assemblies
83	C3.9 Design of Protected Wood Connections
85	COMMENTARY REFERENCES

AWC PWF withCommentary 2021

Sun, 20 Oct 2024 05:25:32 +0000

ANSI / AWC PWF-2021 – Permanent Wood Foundation Design Specification. A Permanent Wood Foundation (PWF) system is intended for light frame construction including residential buildings. This document primarily addresses the structural design requirements. The Permanent Wood Foundation is a load-bearing wood-frame wall and floor system designed for both above and below-grade use as a foundation for light frame construction. The PWF specifications are based on information developed cooperatively by the wood products industry and the U.S. Forest Service, with the advice and guidance of the Department of Housing and Urban Development’s Federal Housing Administration and utilizing research findings of the National Association of Home Builders Research Center. The 2021 PWF Standard has been adopted for reference in the 2021 International Residential Code and International Building Code.

PDF Catalog

PDF Pages	PDF Title
1	Front Cover
3	Title
4	Copyright
5	Foreword
6	Table of Contents List of Figures
8	1. General Requirements
9	1.1 Scope 1.2 Conformance With Standards 1.3 Terminology
10	1.4 Notation
12	2. Materials
13	2.1 Framing 2.2 Sheathing 2.3 Preservative Treatment
14	2.4 Connections In Preservative-Treated Wood 2.5 Aggregate for Footings and Fill 2.6 Caulking Compound 2.7 Polyethylene Sheeting
15	2.8 Polyethylene Sheeting Adhesive
16	3. Soil: Types, Structural Performance, Drainage
17	3.1 Soil Types 3.2 Soil Structure Characteristics
18	4. Environmental Control
19	4.1 Design for Dryness
20	4.2 Design for Climate Control
22	5. Structural Design
23	5.1 General 5.2 Material Design Standards 5.3 Design Loads and Design Methodology
25	5.4 PWF Wall Design
29	5.5 Footing Design
31	5.6 Basement Floor Design 5.7 Design of Framing Around Openings
32	References
33	References
34	PWF Commentary
35	Foreword
36	C1. General Requirements C1.1 Scope C1.2 Conformance with Standards
37	C2. Materials C2.2 Sheathing C2.3 Preservative Treatment C2.5 Aggregate for Footings and Fill
38	C3. Soil: Types, Structural Performance, Drainage C3.2 Soil Structural Characteristics
39	C4. Environmental Control C4.1 Design for Dryness C4.2 Design for Climate Control
40	C5. Structural Design C5.2 Material Design Standards C5.3 Design Loads and Design Methodology
41	C5.4 PWF Wall Design
49	C5.5 Footing Design
51	C5.6 Basement Floor Design
52	References
55	Back cover

AWC WSDD 2004

Sat, 19 Oct 2024 13:27:37 +0000

Generic Load tables for wood beams and wood columns and generic span tables for high capacity floor joists and for plank and laminated floors and roofs.

PDF Catalog

PDF Pages	PDF Title
1	WOOD STRUCTURAL DESIGN DATA
5	TOC
6	PROPERTIES OF STRUCTURAL LUMBER Physical Properties
13	Mechanical Properties
16	Design Values for Structural Lumber
18	Adjustment of Design Values for Duration of Loading
21	Glossary of Lumber Terms
24	Abbreviations of Lumber Terms
26	Table of Board Measure
28	Standard Sizes of Yard Lumber and Timbers
29	Properties of Standard Dressed Lumber Sizes
33	WOOD BEAMS General Design Information
35	Design for Bending Moment
39	Design for Bending and Axial Loading Combines
40	Design for Deflection
42	Design for Horizontal Shear
45	Design for Bearing on Supports
46	Formulas and Diagrams for Static Loads
63	Wood Beams – Load Tables
65	Safe Load Tables 4′-8′ Spans
75	9′-12′ Spans
92	13′-16′ Spans
111	16′-20′ Spans
142	21′-24′ Spans
165	25′-28′ Spans
186	29′-32′ Spans
205	WOOD COLUMNS
206	General Design Information
208	Solid Columns
209	Tapered Round Columns
210	Spaced Columns
212	Combined Axial and Bending Loading
213	Solution of Hawkinson Formula
215	Use of Tabular Column Data
216	Unit Axial Stresses Simple Solid Columns – l/d from 2 to 30
222	Unit Axial Stresses Simple Solid Columns – l/d from 30 to 50
228	Unit Axial Stresses Spaced Columns, Condition “a” – l/d from 2 to 46
234	Unit Axial Stresses Spaced Columns, Condition “a” – l/d from 46 to 80
240	Unit Axial Stresses Spaced Columns, Condition “b” – l/d from 2 to 46
246	Unit Axial Stresses Spaced Columns, Condition “b” – l/d from 46 to 80
252	PLANK AND LAMINATED FLOORS AND ROOFS General Design Information
258	Table of Uniform Loads – Type III
259	Table of Uniform Loads – Type IV
260	MAXIMUM SPANS FOR FLOOR JOISTS General Design Information
261	Maximum Spans – 50 psf Live Load
262	Maximum Spans – 60 psf Live Load
263	Maximum Spans – 70 psf Live Load
264	Maximum Spans – 80 psf Live Load
265	Maximum Spans – 90 psf Live Load
266	Maximum Spans – 100 psf Live Load
267	REFERENCES
269	DECIMALEQUIVALENTS

AWC WFCM 2018

Sat, 19 Oct 2024 13:27:36 +0000

The 2018 Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings was developed by the American Wood Council’s (AWC) Wood Design Standards Committee and has been approved by ANSI as an American National Standard. The 2018 WFCM is referenced in the 2018 International Building Code and 2018 International Residential Code. Tabulated engineered and prescriptive design provisions in WFCM Chapters 2 and 3, respectively are based on the following loads from ASCE/SEI 7-16 Minimum Design Loads and Associated Criteria for Buildings and Other Structures: 0-70 psf ground snow loads 90-195 mph 3-second gust basic wind speeds Seismic Design Categories A-D The WFCM includes design and construction provisions for connections, wall systems, floor systems, and roof systems. A range of structural elements are covered, including sawn lumber, structural glued laminated timber, wood structural sheathing, I-joists, and trusses.

PDF Catalog

PDF Pages	PDF Title
1	Cover
3	Title Page
5	Foreword
7	Table of Contents
9	General Information Chapter 1 General Information
10	Table 1 Applicability Limitations
11	1.1 Scope 1.1 Scope
12	1.2 Materials Standards 1.2 Materials Standards
13	1.3 Definitions 1.3 Definitions
17	1.4 Symbols 1.4 Symbols
19	Figures Figure 1.1 Basic Wind Speeds for One- and Two-Family Dwellings Based on 700-yr Return Period 3-second Gust Basic Wind Speeds
20	Figure 1.2 Mean Roof Height (MRH)
21	Engineered Design Chapter 2 Engineered Design
22	Table 2 Engineered Design Limitations
23	2.1 General Provisions 2.1 General Provisions Table 2.1.3.1 Adjustment for Wind Exposure and Mean Roof Height
25	2.2 Connections 2.2 Connections
27	2.3 Floor Systems 2.3 Floor Systems
29	2.4 Wall Systems 2.4 Wall Systems
31	2.5 Roof Systems 2.5 Roof Systems
34	List of Figures List of Figures
36	Figures 2.1 – 2.5 Figure 2.1a Cantilever With Loadbearing Wall Figure 2.1b Cantilever With Non-Loadbearing Wall
37	Figure 2.1c Cantilever With Loadbearing Wall – Designed for Additional Load Where Cantilever > d Figure 2.1d Setback Limits for Loadbearing Wall
38	Figure 2.1e Setback Limits for Loadbearing Wall – Designed for Additional Load Where Offset > d Figure 2.1f Rafter Overhang Limits
39	Figure 2.1g Rake Overhang Limits – Outlookers
40	Figure 2.1h Rake Overhang Limits – Lookout Blocks
41	Figure 2.1i Vertical Floor Offset Figure 2.1j Floor and Roof Diaphragm Aspect Ratio Limits
42	Figure 2.1k Floor Diaphragm Opening Limits Figure 2.1L Shear Wall Line Offset
43	Figure 2.2a Typical Lateral Framing Connections
44	Figure 2.2b Shear Connection Locations
45	Figure 2.2c Typical Wind Uplift Connections
46	Figure 2.2d Overturning Detail
47	Figure 2.3 Endwall Blocking Detail
48	Figure 2.4a I-Joist Bearing on Wall With Blocking as End Restraint Figure 2.4b I-Joist Bearing on Wall With Rim Joist as End Restraint Figure 2.4c Continuous I-Joist Over a Bearing Wall Supporting a Wall Above
49	Figure 2.4d Vertical Wall Offset on I-Joist Floor Assembly Figure 2.4e Continuous Cantilevered I-Joist Over a Bearing Wall Supporting a Wall Above
50	Figure 2.5a I-Joist Connection to Sill Plate Figure 2.5b Column Load Transfer Through I-Joist Floor System to Foundation Figure 2.5c I-Joist Bevel Cut
51	Figures 2.6 – 2.10 Figure 2.6a I-Joist Floor Header Figure 2.6b I-Joist Floor Header With Filler Block Between Double Trimmers
52	Figure 2.6c Stair Stringer Connection to I-Joist Floor System Figure 2.7 I-Joist Supported by Hangers Attached to Interior Beam
53	Figure 2.8 I-Joist Web Stiffener Attachment at Bearing Points
54	Figure 2.9a Typical I-Joist Cantilever Supporting Uniform Loads Figure 2.9b L umber Cantilever Attached to I-Joist
55	Figure 2.10a Rafter Ridge Blocking and Uplift Strap for I-Joist Bearing on a Ridge Beam Figure 2.10b Hanger and Uplift Strap for I-Joist Attached to Side of Ridge Beam Figure 2.10c Filler Block and Ridge Blocking for I-Joist Bearing on Ridge Beam Figure 2.10d I-Joist Connection to Header at Roof Opening
56	Figures 2.11 – 2.15 Figure 2.11a I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord Overhang Figure 2.11b I-Joist Roof Rafter Bearing on Exterior Wall With Lumber Overhang Figure 2.11c I-Joist Roof Rafter Bearing on Beveled Plate
57	Figure 2.11d I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord and Lumber Overhang Figure 2.11e Gable End Rake Overhang Outlookers Attached to I-Joist Roof Rafter
58	Figure 2.12a Bottom Chord Bearing on Exterior Wall Figure 2.12b Bottom Chord Bearing on Interior Wall Figure 2.12c Top Chord Bearing on Interior Wall Figure 2.12d Top Chord Bearing on Exterior Wall Figure 2.12e Interior Pocket Bearing
59	Figure 2.12f Top Chord Bearing Truss on Ledger Figure 2.12g Bottom Chord Bearing Truss in Hanger
60	Figure 2.13a Truss Cantilever Detail Figure 2.13b Truss Cantilever Detail
61	Figure 2.14 Truss Strongback Details
62	Figure 2.15a Blocking in Floor Space at End Bearing Truss With Band
63	Figure 2.15b Blocking in Floor Space at Interior Loadbearing Walls
64	Figure 2.15c Blocking in Floor Space at Floor Elevation Change
65	Figures 2.16 – 2.18 Figure 2.16a Roof Truss Overhang Figure 2.16b Roof Truss Overhang and Cantilever Figure 2.16c Roof Truss Overhang and Cantilever Figure 2.16d Roof Truss Overhang With Level Return
66	Figure 2.17a Plan and Isometric of Jack Truss System
67	Figure 2.17b Plan and Isometric of Step Down Truss System
68	Figure 2.18a Roof Intersection with Valley Fill Figure 2.18b Total Roof Truss System
69	List of Tables List of Tables
70	Tables 2.1 – 2.5 Table 2.1 Lateral Framing Connection Loads from Wind
71	Table 2.2A Uplift Connection Loads from Wind
72	Table 2.2B Ridge Connection Loads from Wind
73	Table 2.2C Rake Overhang Outlooker Uplift Connection Loads
74	Table 2.3 Thrust Connection Loads
75	Table 2.4 Roof and Wall Sheathing Suction Loads
76	Table 2.5A Lateral Diaphragm Loads from Wind – Perpendicular to Ridge
77	Table 2.5B Lateral Diaphragm Loads from Wind – Parallel to Ridge – Roof and Floor
79	Table 2.5C Lateral Diaphragm Loads from Wind – Parallel to Ridge – Attic Floor or Ceiling
81	Tables 2.6 – 2.10 Table 2.6 L ateral Loads from Seismic
82	Table 2.7A Floor Joist Spans for 30 psf Live Load
83	Table 2.7B Floor Joist Spans for 40 psf Live Load
84	Table 2.7C Floor Joist Bearing Stresses for Floor Loads
85	Table 2.8A Floor Framing Capacity Requirements for 30 psf Live Load
86	Table 2.8B Floor Framing Capacity Requirements for 40 psf Live Load
88	Table 2.9A Exterior Wall Stud Bending Stresses from Wind Loads
92	Table 2.9B Exterior Wall Stud Compression Stresses
94	Table 2.9C Interior Loadbearing Wall Stud Compression Stresses from Live Loads
95	Table 2.10 Exterior Wall Induced Moments from Wind Loads
96	Tables 2.11 – 2.17 Table 2.11 Loadbearing Wall Loads from Snow or Live Loads
97	Table 2.12A1 Ceiling Joist Spans for 10 psf Live Load Flexible Finish
98	Table 2.12A2 Ceiling Joist Spans for 10 psf Live Load Brittle Finiah
99	Table 2.12B1 Ceiling Joist Spans for 20 psf Live Load Flexible Finish
100	Table 2.12B2 Ceiling Joist Spans for 20 psf Live Load Brittle Finish
101	Table 2.13A1 Ceiling Joist Framing Capacity Requirements for 10 psf Live Load
102	Table 2.13A2 Ceiling Joist Framing Capacity Requirements for 10 psf Live Load Brittle Finish
103	Table 2.13B1 Ceiling Joist Framing Capacity Requirements for 20 psf Live Load Flexible Finish
104	Table 2.13B2 Ceiling Joist Framing Capacity Requirements for 20 psf Live Load Brittle Finish
106	Table 2.14A Rafter Spans for 20 psf Live Load
108	Table 2.14B Rafter Spans for 30 psf Ground Snow Load
109	Table 2.14C Rafter Spans for 50 psf Ground Snow Load
110	Table 2.14D Rafter Spans for 70 psf Ground Snow Load
112	Table 2.15A Roof Framing Capacity Requirements for 20 psf Roof Live Load
114	Table 2.15B Roof Framing Capacity Requirements for 30 psf Ground Snow Load
115	Table 2.15C Roof Framing Capacity Requirements for 50 psf Ground Snow Load
116	Table 2.15D Roof Framing Capacity Requirements for 70 psf Ground Snow Load
118	Table 2.16 Roof Framing Wind Loads (Normal to the Roof Surface) Table 2.17 Ridge Beam Capacity Requirements for Interior Center Bearing Roof and Ceiling
119	Table 2.18 Hip and Valley Beam Capacity Requirements
121	Prescriptive Design Chapter 3 Prescriptive Design
122	Table 3 Prescriptive Design Limitations
123	3.1 General Provisions 3.1 General Provisions
124	3.2 Connections 3.2 Connections
127	3.3 Floor Systems 3.3 Floor Systems
129	3.4 Wall Systems 3.4 Wall Systems
131	3.5 Roof Systems 3.5 Roof Systems
133	List of Figures List of Figures
134	Figures 3.1 – 3.5 Figure 3.1a Determining the Mean Roof Height (MRH) and Top Plate to Roof Ridge Height Figure 3.1b Method for Addressing Shear Wall Line Offsets
135	Figure 3.1c Shear Wall Offset
136	Figure 3.2a Sill Plate Anchorage to Concrete Foundation Wall Figure 3.2b Sill Plate Anchorage to Masonry Foundation Wall Figure 3.2c Bottom Plate Anchorage to Slab-on-Grade
137	Figure 3.2d Wall Assembly to Permanent Wood Foundation Figure 3.2e Wall Assembly to Piles
138	Figure 3.2f Panel Attachment Figure 3.2g Panel Splice Occurring over Horizontal Framing Members
139	Figure 3.2h Panel Splice Occurring across Studs Figure 3.2i Sheathing Splice Plate (Alternative Detail)
140	Figure 3.2j Roof to Top Plate Connection Through Sheathing Figure 3.2k Roof to Top Plate Uplift Connection
141	Figure 3.3a Solid Sawn Joist and Rafter Notching and Boring Limits Figure 3.3b Stud Notching and Boring Limits
142	Figure 3.4a Joists Framing on a Solid Sawn Girder Figure 3.4b Joists Framing on a Ledger Figure 3.4c Joists Framing on a Steel Beam
143	Figure 3.4d Joist Framing on a Stud Wall Figure 3.4e Joist Framing on a Foundation Sill Plate Figure 3.4f Girder Bearing on a Concrete Wall Figure 3.4g Cantilever Floor – 3D View
144	Figure 3.5a Loadbearing Wall Offset from Support Figure 3.5b Double Joist Under a Non-Loadbearing Wall Figure 3.5c Blocking Under a Non-Loadbearing Wall Figure 3.5d Double Joist Under a Bathtub
145	Figures 3.6 – 3.12 Figure 3.6a Floor Opening – Stairway Figure 3.6b Floor Opening – Stairway With Landing
146	Figure 3.7a Ceiling Bracing Gable Endwall Figure 3.7b Floor Bracing Endwall
147	Figure 3.8a Corner Stud Hold-down Detail – 3 Studs With Blocking Figure 3.8b Corner Stud Hold-down Detail – 4 Studs Figure 3.8c Interior Stud Detail Figure 3.8d Top Plate Intersection Detail
148	Figure 3.9a Studs and Headers Around Wall Openings Figure 3.9b Studs and Headers Around Wall Openings – Bay Window
149	Figure 3.10a Ridge Beam Details Figure 3.10b Ridge Board and Ceiling Joist Detail Figure 3.10c Ridge Board and Rafter Tie Detail
150	Figure 3.11a Roof Openings – Chimney Figure 3.11b Roof Openings – Gable Dormer
151	Figure 3.11c Roof Openings – Shed Dormer
152	Figure 3.12a Hip Roof Framing Detail
153	Figure 3.12b Valley Roof Framing Detail Figure 3.12c Valley Beam Roof Framing Detail
154	List of Tables List of Tables
157	Tables 3.1 – 3.5 Table 3.1 Nailing Schedule
158	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure B
161	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure C
165	Table 3.2A Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure B
166	Table 3.2A Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure C
168	Table 3.2B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Lateral and ShearLoads from Wind – Exposures B and C Table 3.2C Sill or Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Uplift Loads from Wind – Exposures B and C
169	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 30
170	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 50
171	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 70
173	Table 3.3A1 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
174	Table 3.3A2 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
175	Table 3.3A3 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
176	Table 3.3A4 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
177	Table 3.3A5 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
178	Table 3.3A6 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
179	Table 3.3B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Shear from Seismic
180	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure B
183	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure C
186	Table 3.4A Rafter and/or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure B Table 3.4A Rafter and/or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure C
187	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure B
188	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure C
189	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure B
190	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure C
191	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure B
192	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure C
193	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure B
194	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure C
195	Tables 3.6 – 3.15 Table 3.6 Ridge Connection Requirements for Wind – Exposure B
196	Table 3.6 Ridge Connection Requirements for Wind – Exposure C
197	Table 3.7 Header Connection Requirements for Wind – Exposure B
198	Table 3.7 Header Connection Requirements for Wind – Exposure C
199	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure B
200	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure C
201	Table 3.9 Rafter/ Ceiling Joist Heel Joint Connection Requirements
202	Table 3.9A Rafter/ Ceiling Joist Heel Joint Connection Requirements
203	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure B
204	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure C
205	Table 3.10A Roof Sheathing Attachment Requirements for Wind Loads – Exposure B
206	Table 3.10A Roof Sheathing Attachment Requirements for Wind Loads – Exposure C
207	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure B
208	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure C
209	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure B
210	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure C
211	Table 3.12B Maximum Roof Sheathing Spans for Roof Live and Snow Loads
212	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure B
213	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure C
214	Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure B Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure C
215	Table 3.14 Maximum Floor Sheathing Spans for Live Loads
216	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure B
217	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure C
219	Tables 3.16 – 3.19 Table 3.16A1 Roof Diaphragm Limits for Wind – Exposure B – All Slopes
220	Table 3.16A2 Roof Diaphragm Limits for Wind – Exposure B – Low Slopes
221	Table 3.16A3 Roof Diaphragm Limits for Wind – Exposure C – All Slopes
222	Table 3.16A4 Roof Diaphragm Limits for Wind – Exposure C – Low Slopes
223	Table 3.16B Floor Diaphragm Limits for Wind – Exposure B
224	Table 3.16B Floor Diaphragm Limits for Wind – Exposure C
225	Table 3.16C1 Diaphragm Limits for Seismic – GSL = 30
226	Table 3.16C2 Diaphragm Limits for Seismic – GSL = 50
227	Table 3.16C3 Diaphragm Limits for Seismic – GSL = 70
229	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure B
230	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure C
232	Table 3.17C1 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 30
233	Table 3.17C2 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 50
234	Table 3.17C3 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 70
236	Table 3.17D Shear Wall Assembly Allowable Unit Shear Capacities, Maximum Shear Wall Segment Aspect Ratios, and Sheathing Type Adjustments
240	Table 3.17E Perforated Shear Wall Full Height Sheathing Adjustments
241	Table 3.17F Segmented and Perforated Shear Wall Hold-down Capacity Requirements
242	Table 3.18A Floor Joist Spans for Common Lumber Species – LL = 30 psf
243	Table 3.18B Floor Joist Spans for Common Lumber Species – LL = 40 psf
244	Table 3.19 Representative Metal Plate Connected Wood Floor Truss Spans
246	Tables 3.20 – 3.22 Table 3.20A1 Maximum Exterior Loadbearing and Non-loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B
249	Table 3.20A2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B
252	Table 3.20A3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B
255	Table 3.20A4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure C
258	Table 3.20A5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C
261	Table 3.20A6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C
265	Table 3.20B1 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B – 3/8″ WSP
268	Table 3.20B2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B – 3/8″ WSP
271	Table 3.20B3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B – 3/8″ WSP
274	Table 3.20B4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure C – 3/8″ WSP
277	Table 3.20B5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C – 3/8″ WSP
280	Table 3.20B6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C – 3/8″ WSP
283	Table 3.20C Size, Height, and Spacing Limits for Wood Studs
284	Table 3.21 Top Plate Requirements for Wind – Exposures B & C
286	Table 3.22A1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
287	Table 3.22A2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
288	Table 3.22B1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
289	Table 3.22B2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
290	Table 3.22C1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
291	Table 3.22C2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
292	Table 3.22D1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
293	Table 3.22D2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
294	Table 3.22E1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
295	Table 3.22E2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
296	Table 3.22F Jack Stud Requirements
297	Tables 3.23 – 3.29 Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure B
298	Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure C
299	Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure B Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure C
300	Table 3.23C Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
301	Table 3.23D Reduced Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
302	Table 3.24A Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
303	Table 3.24A Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
304	Table 3.24B Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
305	Table 3.24B Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
306	Table 3.24C Jack Stud Requirements (For Headers in Exterior Loadbearing Walls)
307	Table 3.25A1 Ceiling Joist Spans for Common Lumber Species – LL = 10 psf Flexible Finish
308	Table 3.25A2 Ceiling Joist Spans for Common Lumber Species – LL = 10 psf Brittle Finish
309	Table 3.25B1 Ceiling Joist Spans for Common Lumber Species – LL = 20 psf Flexible Finish
310	Table 3.25B2 Ceiling Joist Spans for Common Lumber Species – LL = 20 psf Brittle Finish
311	Table 3.26A Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 180
312	Table 3.26B Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 240 Flexible Finish
313	Table 3.26C Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 360 Brittle Finish
315	Table 3.26D Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 180
316	Table 3.26E Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 240 Flexible Finish
317	Table 3.26F Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 360 Brittle Finish
318	Table 3.26G Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 180
319	Table 3.26H Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 240 Flexible Finish
320	Table 3.26I Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 360 Brittle Finish
321	Table 3.26J Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 180
322	Table 3.26K Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 240 Flexible Finish
323	Table 3.26L Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 360 Brittle Finish
325	Table 3.26M Rafter Deflection Limit = L/180 – Exposure B
330	Table 3.26M Rafter Deflection Limit = L/180 – Exposure C
336	Table 3.27 Representative Metal Plate Connected Wood Roof Truss Spans
337	Table 3.28 Hip and Valley Beam Sizes
338	Table 3.29 Ridge Beam Spans
339	Appendix A List of Appendix A Wind Load Tables for Uplift Strap and Ridge Strap Connections
340	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure B
341	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure C
342	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure B
343	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure C
345	Supplement Supplement
346	Table S-1 Maximum Spans and Allowable Total Uniform Loads for Floor Sheathing Table S-2A Maximum Spans and Allowable Total Uniform Loads (Bending and Shear) for Roof Sheathing for Normal Duration Loads
347	Table S-2B Maximum Spans and Allowable Total Uniform Loads (Deflection) for Roof Sheathing for Normal Duration Loads Table S-3 ASD Unit Shear Capacity for Horizontal Diaphragm Assemblies Sheathed with Gypsum Wallboard
349	References References
352	Back Cover

AWC WFCM 2015

Sat, 19 Oct 2024 13:27:36 +0000

The 2015 Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings was developed by the American Wood Council’s (AWC) Wood Design Standards Committee and has been approved by ANSI as an American National Standard. The 2015 WFCM is referenced in the 2015 International Building Code and 2015 International Residential Code. Tabulated engineered and prescriptive design provisions in WFCM Chapters 2 and 3, respectively are based on the following loads from ASCE 7-10 Minimum Design Loads for Buildings and Other Structures: 0-70 psf ground snow loads 110-195 mph 700-year return period 3-second gust basic wind speeds Seismic Design Categories A-D The WFCM includes design and construction provisions for connections, wall systems, floor systems, and roof systems. A range of structural elements are covered, including sawn lumber, structural glued laminated timber, wood structural sheathing, I-joists, and trusses.

PDF Catalog

PDF Pages	PDF Title
1	Cover
3	Title Page
5	Foreword
7	Table of Contents
9	Chapter 1 General Information
10	Table 1 Applicability Limitations
11	1.1 Scope
12	1.2 Materials Standards
13	1.3 Definitions
17	1.4 Symbols
19	Figure 1.1 Basic Wind Speeds for One- and Two-Family Dwellings Based on 700-yr Return Period 3-second Gust Basic Wind Speeds
20	Figure 1.2 Mean Roof Height (MRH)
21	Chapter 2 Engineered Design
22	Table 2 Engineered Design Limitations
23	2.1 General Provisions Table 2.1.3.1 Adjustment for Wind Exposure and Mean Roof Height
25	2.2 Connections
27	2.3 Floor Systems
29	2.4 Wall Systems
31	2.5 Roof Systems
34	List of Figures
36	Figures 2.1 – 2.5 Figure 2.1a Cantilever With Loadbearing Wall Figure 2.1b Cantilever With Non-Loadbearing Wall
37	Figure 2.1c Cantilever With Loadbearing Wall – Designed for Additional Load Where Cantilever > d Figure 2.1d Setback Limits for Loadbearing Wall
38	Figure 2.1e Setback Limits for Loadbearing Wall – Designed for Additional Load Where Offset > d Figure 2.1f Rafter Overhang Limits
39	Figure 2.1g Rake Overhang Limits – Outlookers
40	Figure 2.1h Rake Overhang Limits – Lookout Blocks
41	Figure 2.1i Vertical Floor Offset Figure 2.1j Floor and Roof Diaphragm Aspect Ratio Limits
42	Figure 2.1k Floor Diaphragm Opening Limits Figure 2.1L Shear Wall Line Offset
43	Figure 2.2a Typical Lateral Framing Connections
44	Figure 2.2b Shear Connection Locations
45	Figure 2.2c Typical Wind Uplift Connections
46	Figure 2.2d Overturning Detail
47	Figure 2.3 Endwall Blocking Detail
48	Figure 2.4a I-Joist Bearing on Wall With Blocking as End Restraint Figure 2.4b I-Joist Bearing on Wall With Rim Joist as End Restraint Figure 2.4c Continuous I-Joist Over a Bearing Wall Supporting a Wall Above
49	Figure 2.4d Vertical Wall Offset on I-Joist Floor Assembly Figure 2.4e Continuous Cantilevered I-Joist Over a Bearing Wall Supporting a Wall Above
50	Figure 2.5a I-Joist Connection to Sill Plate Figure 2.5b Column Load Transfer Through I-Joist Floor System to Foundation Figure 2.5c I-Joist Bevel Cut
51	Figures 2.6 – 2.10 Figure 2.6a I-Joist Floor Header Figure 2.6b I-Joist Floor Header With Filler Block Between Double Trimmers
52	Figure 2.6c Stair Stringer Connection to I-Joist Floor System Figure 2.7 I-Joist Supported by Hangers Attached to Interior Beam
53	Figure 2.8 I-Joist Web Stiffener Attachment at Bearing Points
54	Figure 2.9a Typical I-Joist Cantilever Supporting Uniform Loads Figure 2.9b L umber Cantilever Attached to I-Joist
55	Figure 2.10a Rafter Ridge Blocking and Uplift Strap for I-Joist Bearing on a Ridge Beam Figure 2.10b Hanger and Uplift Strap for I-Joist Attached to Side of Ridge Beam Figure 2.10c Filler Block and Ridge Blocking for I-Joist Bearing on Ridge Beam Figure 2.10d I-Joist Connection to Header at Roof Opening
56	Figures 2.11 – 2.15 Figure 2.11a I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord Overhang Figure 2.11b I-Joist Roof Rafter Bearing on Exterior Wall With Lumber Overhang Figure 2.11c I-Joist Roof Rafter Bearing on Beveled Plate
57	Figure 2.11d I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord and Lumber Overhang Figure 2.11e Gable End Rake Overhang Outlookers Attached to I-Joist Roof Rafter
58	Figure 2.12a Bottom Chord Bearing on Exterior Wall Figure 2.12b Bottom Chord Bearing on Interior Wall Figure 2.12c Top Chord Bearing on Interior Wall Figure 2.12d Top Chord Bearing on Exterior Wall Figure 2.12e Interior Pocket Bearing
59	Figure 2.12f Top Chord Bearing Truss on Ledger Figure 2.12g Bottom Chord Bearing Truss in Hanger
60	Figure 2.13a Truss Cantilever Detail Figure 2.13b Truss Cantilever Detail
61	Figure 2.14 Truss Strongback Details
62	Figure 2.15a Blocking in Floor Space at End Bearing Truss With Band
63	Figure 2.15b Blocking in Floor Space at Interior Loadbearing Walls
64	Figure 2.15c Blocking in Floor Space at Floor Elevation Change
65	Figures 2.16 – 2.18 Figure 2.16a Roof Truss Overhang Figure 2.16b Roof Truss Overhang and Cantilever Figure 2.16c Roof Truss Overhang and Cantilever Figure 2.16d Roof Truss Overhang With Level Return
66	Figure 2.17a Plan and Isometric of Jack Truss System
67	Figure 2.17b Plan and Isometric of Step Down Truss System
68	Figure 2.18a Roof Intersection with Valley Fill Figure 2.18b Total Roof Truss System
69	List of Tables
70	Tables 2.1 – 2.5 Table 2.1 Lateral Framing Connection Loads from Wind
71	Table 2.2A Uplift Connection Loads from Wind
72	Table 2.2B Ridge Connection Loads from Wind
73	Table 2.2C Rake Overhang Outlooker Uplift Connection Loads
74	Table 2.3 Thrust Connection Loads
75	Table 2.4 Roof and Wall Sheathing Suction Loads
76	Table 2.5A Lateral Diaphragm Loads from Wind – Perpendicular to Ridge
77	Table 2.5B Lateral Diaphragm Loads from Wind – Parallel to Ridge – Roof and Floor
79	Table 2.5C Lateral Diaphragm Loads from Wind – Parallel to Ridge – Attic Floor or Ceiling
81	Tables 2.6 – 2.10 Table 2.6 L ateral Loads from Seismic
82	Table 2.7A Floor Joist Spans for 30 psf Live Load
83	Table 2.7B Floor Joist Spans for 40 psf Live Load
84	Table 2.7C Floor Joist Bearing Stresses for Floor Loads
85	Table 2.8A Floor Framing Capacity Requirements for 30 psf Live Load
86	Table 2.8B Floor Framing Capacity Requirements for 40 psf Live Load
88	Table 2.9A Exterior Wall Stud Bending Stresses from Wind Loads
90	Table 2.9B Exterior Wall Stud Compression Stresses
92	Table 2.9C Interior Loadbearing Wall Stud Compression Stresses from Live Loads
93	Table 2.10 Exterior Wall Induced Moments from Wind Loads
94	Tables 2.11 – 2.17 Table 2.11 Loadbearing Wall Loads from Snow or Live Loads
95	Table 2.12A1 Ceiling Joist Spans for 10 psf Live Load Flexible Finish
96	Table 2.12A2 Ceiling Joist Spans for 10 psf Live Load Brittle Finiah
97	Table 2.12B1 Ceiling Joist Spans for 20 psf Live Load Flexible Finish
98	Table 2.12B2 Ceiling Joist Spans for 20 psf Live Load Brittle Finish
99	Table 2.13A1 Ceiling Joist Framing Capacity Requirements for 10 psf Live Load
100	Table 2.13A2 Ceiling Joist Framing Capacity Requirements for 10 psf Live Load Brittle Finish
101	Table 2.13B1 Ceiling Joist Framing Capacity Requirements for 20 psf Live Load Flexible Finish
102	Table 2.13B2 Ceiling Joist Framing Capacity Requirements for 20 psf Live Load Brittle Finish
104	Table 2.14A Rafter Spans for 20 psf Live Load
107	Table 2.14B Rafter Spans for 30 psf Ground Snow Load
108	Table 2.14C Rafter Spans for 50 psf Ground Snow Load
109	Table 2.14D Rafter Spans for 70 psf Ground Snow Load
111	Table 2.15A Roof Framing Capacity Requirements for 20 psf Roof Live Load
114	Table 2.15B Roof Framing Capacity Requirements for 30 psf Ground Snow Load
115	Table 2.15C Roof Framing Capacity Requirements for 50 psf Ground Snow Load
116	Table 2.15D Roof Framing Capacity Requirements for 70 psf Ground Snow Load
118	Table 2.16 Ridge Beam Capacity Requirements for Interior Center Bearing Roof and Ceiling
119	Table 2.17 Hip and Valley Beam Capacity Requirements
121	Chapter 3 Prescriptive Design
122	Table 3 Prescriptive Design Limitations
123	3.1 General Provisions
124	3.2 Connections
127	3.3 Floor Systems
129	3.4 Wall Systems
131	3.5 Roof Systems
133	List of Figures
134	Figures 3.1 – 3.5 Figure 3.1a Determining the Mean Roof Height (MRH) and Top Plate to Roof Ridge Height Figure 3.1b Method for Addressing Shear Wall Line Offsets
135	Figure 3.1c Shear Wall Offset
136	Figure 3.2a Sill Plate Anchorage to Concrete Foundation Wall Figure 3.2b Sill Plate Anchorage to Masonry Foundation Wall Figure 3.2c Bottom Plate Anchorage to Slab-on-Grade
137	Figure 3.2d Wall Assembly to Permanent Wood Foundation Figure 3.2e Wall Assembly to Piles
138	Figure 3.2f Panel Attachment Figure 3.2g Panel Splice Occurring over Horizontal Framing Members
139	Figure 3.2h Panel Splice Occurring across Studs Figure 3.2i Sheathing Splice Plate (Alternative Detail)
140	Figure 3.2j Roof to Top Plate Connection Through Sheathing Figure 3.2k Roof to Top Plate Uplift Connection
141	Figure 3.3a Solid Sawn Joist and Rafter Notching and Boring Limits Figure 3.3b Stud Notching and Boring Limits
142	Figure 3.4a Joists Framing on a Solid Sawn Girder Figure 3.4b Joists Framing on a Ledger Figure 3.4c Joists Framing on a Steel Beam
143	Figure 3.4d Joist Framing on a Stud Wall Figure 3.4e Joist Framing on a Foundation Sill Plate Figure 3.4f Girder Bearing on a Concrete Wall Figure 3.4g Cantilever Floor – 3D View
144	Figure 3.5a Loadbearing Wall Offset from Support Figure 3.5b Double Joist Under a Non-Loadbearing Wall Figure 3.5c Blocking Under a Non-Loadbearing Wall Figure 3.5d Double Joist Under a Bathtub
145	Figures 3.6 – 3.12 Figure 3.6a Floor Opening – Stairway Figure 3.6b Floor Opening – Stairway With Landing
146	Figure 3.7a Ceiling Bracing Gable Endwall Figure 3.7b Floor Bracing Endwall
147	Figure 3.8a Corner Stud Hold-down Detail – 3 Studs With Blocking Figure 3.8b Corner Stud Hold-down Detail – 4 Studs Figure 3.8c Interior Stud Detail Figure 3.8d Top Plate Intersection Detail
148	Figure 3.9a Studs and Headers Around Wall Openings Figure 3.9b Studs and Headers Around Wall Openings – Bay Window
149	Figure 3.10a Ridge Beam Details Figure 3.10b Ridge Board and Ceiling Joist Detail Figure 3.10c Ridge Board and Rafter Tie Detail
150	Figure 3.11a Roof Openings – Chimney Figure 3.11b Roof Openings – Gable Dormer
151	Figure 3.11c Roof Openings – Shed Dormer
152	Figure 3.12a Hip Roof Framing Detail
153	Figure 3.12b Valley Roof Framing Detail Figure 3.12c Valley Beam Roof Framing Detail
154	List of Tables
157	Tables 3.1 – 3.5 Table 3.1 Nailing Schedule
158	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure B
160	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure C
163	Table 3.2A Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure B
164	Table 3.2A Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure C
166	Table 3.2B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Lateral and ShearLoads from Wind – Exposures B and C Table 3.2C Sill or Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Uplift Loads from Wind – Exposures B and C
167	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 30
168	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 50
169	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 70
171	Table 3.3A1 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
172	Table 3.3A2 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
173	Table 3.3A3 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
174	Table 3.3A4 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
175	Table 3.3A5 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
176	Table 3.3A6 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
177	Table 3.3B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Shear from Seismic
178	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure B
180	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure C
182	Table 3.4A Rafter and/or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure B
183	Table 3.4A Rafter and/or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure C
184	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure B
185	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure C
186	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure B
187	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure C
188	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure B
189	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure C
190	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure B
191	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure C
192	Tables 3.6 – 3.15 Table 3.6 Ridge Connection Requirements for Wind – Exposure B
193	Table 3.6 Ridge Connection Requirements for Wind – Exposure C
194	Table 3.7 Header Connection Requirements for Wind – Exposure B
195	Table 3.7 Header Connection Requirements for Wind – Exposure C
196	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure B
197	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure C
198	Table 3.9 Rafter/ Ceiling Joist Heel Joint Connection Requirements
199	Table 3.9A Rafter/ Ceiling Joist Heel Joint Connection Requirements
200	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure B
201	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure C
202	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure B
203	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure C
204	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure B
205	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure C
206	Table 3.12B Maximum Roof Sheathing Spans for Roof Live and Snow Loads
207	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure B
208	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure C
209	Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure B Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure C
210	Table 3.14 Maximum Floor Sheathing Spans for Live Loads
211	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure B
212	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure C
214	Tables 3.16 – 3.19 Table 3.16A1 Roof Diaphragm Limits for Wind – Exposure B – All Slopes
215	Table 3.16A2 Roof Diaphragm Limits for Wind – Exposure B – Low Slopes
216	Table 3.16A3 Roof Diaphragm Limits for Wind – Exposure C – All Slopes
217	Table 3.16A4 Roof Diaphragm Limits for Wind – Exposure C – Low Slopes
218	Table 3.16B Floor Diaphragm Limits for Wind – Exposure B Table 3.16B Floor Diaphragm Limits for Wind – Exposure C
219	Table 3.16C1 Diaphragm Limits for Seismic – GSL = 30
220	Table 3.16C2 Diaphragm Limits for Seismic – GSL = 50
221	Table 3.16C3 Diaphragm Limits for Seismic – GSL = 70
223	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure B
224	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure C
226	Table 3.17C1 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 30
227	Table 3.17C2 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 50
228	Table 3.17C3 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 70
230	Table 3.17D Shear Wall Assembly Allowable Unit Shear Capacities, Maximum Shear Wall Segment Aspect Ratios, and Sheathing Type Adjustments
234	Table 3.17E Perforated Shear Wall Full Height Sheathing Adjustments
235	Table 3.17F Segmented and Perforated Shear Wall Hold-down Capacity Requirements
236	Table 3.18A Floor Joist Spans for Common Lumber Species – LL = 30 psf
237	Table 3.18B Floor Joist Spans for Common Lumber Species – LL = 40 psf
238	Table 3.19 Representative Metal Plate Connected Wood Floor Truss Spans
240	Tables 3.20 – 3.22 Table 3.20A1 Maximum Exterior Loadbearing and Non-loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B
242	Table 3.20A2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B
244	Table 3.20A3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B
246	Table 3.20A4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure C
248	Table 3.20A5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C
250	Table 3.20A6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C
254	Table 3.20B1 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B – 3/8″ WSP
256	Table 3.20B2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B – 3/8″ WSP
258	Table 3.20B3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B – 3/8″ WSP
260	Table 3.20B4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure C – 3/8″ WSP
262	Table 3.20B5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C – 3/8″ WSP
264	Table 3.20B6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C – 3/8″ WSP
266	Table 3.20C Size, Height, and Spacing Limits for Wood Studs
267	Table 3.21 Top Plate Requirements for Wind – Exposures B & C
268	Table 3.22A1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
269	Table 3.22A2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
270	Table 3.22B1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
271	Table 3.22B2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
272	Table 3.22C1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
273	Table 3.22C2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
274	Table 3.22D1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
275	Table 3.22D2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
276	Table 3.22E1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
277	Table 3.22E2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
278	Table 3.22F Jack Stud Requirements
279	Tables 3.23 – 3.29 Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure B
280	Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure C
281	Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure B Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure C
282	Table 3.23C Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
283	Table 3.23D Reduced Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
284	Table 3.24A Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
285	Table 3.24A Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
286	Table 3.24B Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
287	Table 3.24B Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
288	Table 3.24C Jack Stud Requirements (For Headers in Exterior Loadbearing Walls)
289	Table 3.25A1 Ceiling Joist Spans for Common Lumber Species – LL = 10 psf Flexible Finish
290	Table 3.25A2 Ceiling Joist Spans for Common Lumber Species – LL = 10 psf Brittle Finish
291	Table 3.25B1 Ceiling Joist Spans for Common Lumber Species – LL = 20 psf Flexible Finish
292	Table 3.25B2 Ceiling Joist Spans for Common Lumber Species – LL = 20 psf Brittle Finish
293	Table 3.26A Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 180
294	Table 3.26B Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 240 Flexible Finish
295	Table 3.26C Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 360 Brittle Finish
298	Table 3.26D Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 180
299	Table 3.26E Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 240 Flexible Finish
300	Table 3.26F Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 360 Brittle Finish
301	Table 3.26G Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 180
302	Table 3.26H Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 240 Flexible Finish
303	Table 3.26I Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 360 Brittle Finish
304	Table 3.26J Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 180
305	Table 3.26K Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 240 Flexible Finish
306	Table 3.26L Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 360 Brittle Finish
308	Table 3.27 Representative Metal Plate Connected Wood Roof Truss Spans
309	Table 3.28 Hip and Valley Beam Sizes
310	Table 3.29 Ridge Beam Spans
311	List of Appendix A Wind Load Tables for Uplift Strap and Ridge Strap Connections
312	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure B
313	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure C
314	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure B
315	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure C
317	Supplement
318	Table S-1 Maximum Spans and Allowable Total Uniform Loads for Floor Sheathing Table S-2A Maximum Spans and Allowable Total Uniform Loads (Bending and Shear) for Roof Sheathing for Normal Duration Loads
319	Table S-2B Maximum Spans and Allowable Total Uniform Loads (Deflection) for Roof Sheathing for Normal Duration Loads Table S-3 ASD Unit Shear Capacity for Horizontal Diaphragm Assemblies Sheathed with Gypsum Wallboard
321	References
324	Back Cover

AWC WFCM 2012

Sat, 19 Oct 2024 13:27:35 +0000

The 2012 Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings was developed by the American Wood Council’s (AWC) Wood Design Standards Committee and has been approved by ANSI as an American National Standard. The 2012 WFCM is referenced in the 2012 International Building Code and 2012 International Residential Code. Tabulated engineered and prescriptive design provisions in WFCM Chapters 2 and 3, respectively are based on the following loads from ASCE 7-10 Minimum Design Loads for Buildings and Other Structures: 0-70 psf ground snow loads 110-195 mph 700-year return period 3-second gust basic wind speeds Seismic Design Categories A-D The WFCM includes design and construction provisions for connections, wall systems, floor systems, and roof systems. A range of structural elements are covered, including sawn lumber, structural glued laminated timber, wood structural sheathing, I-joists, and trusses.

PDF Catalog

PDF Pages	PDF Title
1	Front Cover
3	Title Page
5	Foreword
7	Table of Contents
9	Chapter 1 General Information
10	Table 1 Applicability Limitations
11	1.1 Scope
12	1.2 Materials Standards
13	1.3 Definitions
17	1.4 Symbols
19	Figure 1.1 Basic Wind Speeds for One- and Two-Family Dwellings Based on 700-yr Return Period 3-second Gust Basic Wind Speeds
20	Figure 1.2 Mean Roof Height (MRH)
21	Chapter 2 Engineered Design
22	Table 2 Engineered Design Limitations
23	2.1 General Provisions Table 2.1.3.1 Adjustment for Wind Exposure and Mean Roof Height
25	2.2 Connections
27	2.3 Floor Systems
29	2.4 Wall Systems
31	2.5 Roof Systems
34	List of Figures
36	Figures 2.1 – 2.5 Figure 2.1a Cantilever With Loadbearing Wall Figure 2.1b Cantilever With Non- Loadbearing Wall
37	Figure 2.1c Cantilever With Loadbearing Wall – Designed for Additional Load Where Cantilever > d Figure 2.1d Setback Limits for Loadbearing Wall
38	Figure 2.1e Setback Limits for Loadbearing Wall – Designed for Additional Load Where Offset > d Figure 2.1f Rafter Overhang Limits
39	Figure 2.1g Rake Overhang Limits – Outlookers
40	Figure 2.1h Rake Overhang Limits – Lookout Blocks
41	Figure 2.1i Vertical Floor Offset Figure 2.1j Floor and Roof Diaphragm Aspect Ratio Limits
42	Figure 2.1k Floor Diaphragm Opening Limits Figure 2.1L Shear Wall Line Offset
43	Figure 2.2a Typical Lateral Framing Connections
44	Figure 2.2b Shear Connection Locations
45	Figure 2.2c Typical Wind Uplift Connections
46	Figure 2.2d Overturning Detail
47	Figure 2.3 Endwall Blocking Detail
48	Figure 2.4a I-Joist Bearing on Wall With Blocking as End Restraint Figure 2.4b I-Joist Bearing on Wall With Rim Joist as End Restraint Figure 2.4c Continuous I-Joist Over a Bearing Wall Supporting a Wall Above
49	Figure 2.4d Vertical Wall Offset on I-Joist Floor Assembly Figure 2.4e Continuous Cantilevered I-Joist Over a Bearing Wall Supporting a Wall Above
50	Figure 2.5a I-Joist Connection to Sill Plate Figure 2.5b Column Load Transfer Through I-Joist Floor System to Foundation Figure 2.5c I-Joist Bevel Cut
51	Figures 2.6 – 2.10 Figure 2.6a I-Joist Floor Header Figure 2.6b I-Joist Floor Header With Filler Block Between Double Trimmers
52	Figure 2.6c Stair Stringer Connection to I-Joist Floor System Figure 2.7 I-Joist Supported by Hangers Attached to Interior Beam
53	Figure 2.8 I-Joist Web Stiffener Attachment at Bearing Points
54	Figure 2.9a Typical I-Joist Cantilever Supporting Uniform Loads Figure 2.9b Lumber Cantilever Attached to I-Joist
55	Figure 2.10a Rafter Ridge Blocking and Uplift Strap for I-Joist Bearing on a Ridge Beam Figure 2.10b Hanger and Uplift Strap for I-Joist Attached to Side of Ridge Beam Figure 2.10c Filler Block and Ridge Blocking for I-Joist Bearing on Ridge Beam Figure 2.10d I-Joist Connection to Header at Roof Opening
56	Figures 2.11 – 2.15 Figure 2.11a I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord Overhang Figure 2.11b I-Joist Roof Rafter Bearing on Exterior Wall With Lumber Overhang Figure 2.11c I-Joist Roof Rafter Bearing on Beveled Plate
57	Figure 2.11d I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord and Lumber Overhang Figure 2.11e Gable End Rake Overhang Outlookers Attached to I-Joist Roof Rafter
58	Figure 2.12a Bottom Chord Bearing on Exterior Wall Figure 2.12b Bottom Chord Bearing on Interior Wall Figure 2.12c Top Chord Bearing on Interior Wall Figure 2.12d Top Chord Bearing on Exterior Wall Figure 2.12e Interior Pocket Bearing
59	Figure 2.12f Top Chord Bearing Truss on Ledger Figure 2.12g Bottom Chord Bearing Truss in Hanger
60	Figure 2.13a Truss Cantilever Detail Figure 2.13b Truss Cantilever Detail
61	Figure 2.14 Truss Strongback Details
62	Figure 2.15a Blocking in Floor Space at End Bearing Truss With Band
63	Figure 2.15b Blocking in Floor Space at Interior Loadbearing Walls
64	Figure 2.15c Blocking in Floor Space at Floor Elevation Change
65	Figures 2.16 – 2.18 Figure 2.16a Roof Truss Overhang Figure 2.16b Roof Truss Overhang and Cantilever Figure 2.16c Roof Truss Overhang and Cantilever Figure 2.16d Roof Truss Overhang With Level Return
66	Figure 2.17a Plan and Isometric of Jack Truss System
67	Figure 2.17b Plan and Isometric of Step Down Truss System
68	Figure 2.18a Roof Intersection with Valley Fill Figure 2.18b Total Roof Truss System
69	List of Tables
70	Tables 2.1 – 2.5 Table 2.1 Lateral Framing Connection Loads from Wind
71	Table 2.2A Uplift Connection Loads from Wind
72	Table 2.2B Ridge Connection Loads from Wind
73	Table 2.2C Rake Overhang Outlooker Uplift Connection Loads
74	Table 2.3 Thrust Connection Loads
75	Table 2.4 Roof and Wall Sheathing Suction Loads
76	Table 2.5A Lateral Diaphragm Loads from Wind – Perpendicular to Ridge
77	Table 2.5B Lateral Diaphragm Loads from Wind – Parallel to Ridge
79	Table 2.5C Lateral Diaphragm Loads from Wind – Parallel to Ridge
81	Tables 2.6 – 2.10 Table 2.6 L ateral Loads from Seismic
82	Table 2.7A Floor Joist Spans for 30 psf Live Load
83	Table 2.7B Floor Joist Spans for 40 psf Live Load
84	Table 2.7C Floor Joist Bearing Stresses for Floor Loads
85	Table 2.8A Floor Framing Capacity Requirements for 30 psf Live Load
86	Table 2.8B Floor Framing Capacity Requirements for 40 psf Live Load
88	Table 2.9A Exterior Wall Stud Bending Stresses from Wind Loads
90	Table 2.9B Exterior Wall Stud Compression Stresses
92	Table 2.9C Interior Loadbearing Wall Stud Compression Stresses from Live Loads
93	Table 2.10 Exterior Wall Induced Moments from Wind Loads
94	Tables 2.11 – 2.17 Table 2.11 Loadbearing Wall Loads from Snow or Live Loads
95	Table 2.12A Ceiling Joist Spans for 10 psf Live Load
96	Table 2.12B Ceiling Joist Spans for 20 psf Live Load
97	Table 2.13A Ceiling Joist Framing Capacity Requirements for 10 psf Live Load
98	Table 2.13B Ceiling Joist Framing Capacity Requirements for 20 psf Live Load
100	Table 2.14A Rafter Spans for 20 psf Live Load
103	Table 2.14B Rafter Spans for 30 psf Ground Snow Load
104	Table 2.14C Rafter Spans for 50 psf Ground Snow Load
105	Table 2.14D Rafter Spans for 70 psf Ground Snow Load
107	Table 2.15A Roof Framing Capacity Requirements for 20 psf Roof Live Load
110	Table 2.15B Roof Framing Capacity Requirements for 30 psf Ground Snow Load
111	Table 2.15C Roof Framing Capacity Requirements for 50 psf Ground Snow Load
112	Table 2.15D Roof Framing Capacity Requirements for 70 psf Ground Snow Load
114	Table 2.16 Ridge Beam Capacity Requirements for Interior Center Bearing Roof and Ceiling
115	Table 2.17 Hip and Valley Beam Capacity Requirements
117	Chapter 3 Prescriptive Design
118	Table 3 Prescriptive Design Limitations
119	3.1 General Provisions
120	3.2 Connections
123	3.3 Floor Systems
125	3.4 Wall Systems
127	3.5 Roof Systems
129	List of Figures
130	Figures 3.1 – 3.5 Figure 3.1a Determining the Mean Roof Height (MRH) and Top Plate to Roof Ridge Height Figure 3.1b Method for Addressing Shear Wall Line Offsets
131	Figure 3.1c Shear Wall Offset
132	Figure 3.2a Sill Plate Anchorage to Concrete Foundation Wall Figure 3.2b Sill Plate Anchorage to Masonry Foundation Wall Figure 3.2c Bottom Plate Anchorage to Slab-on-Grade
133	Figure 3.2d Wall Assembly to Permanent Wood Foundation Figure 3.2e Wall Assembly to Piles
134	Figure 3.2f Panel Attachment Figure 3.2g Panel Splice Occurring over Horizontal Framing Members
135	Figure 3.2h Panel Splice Occurring across Studs Figure 3.2i Sheathing Splice Plate (Alternative Detail)
136	Figure 3.2j Roof to Top Plate Connection Through Sheathing Figure 3.2k Roof to Top Plate Uplift Connection
137	Figure 3.3a Solid Sawn Joist and Rafter Notching and Boring Limits Figure 3.3b Stud Notching and Boring Limits
138	Figure 3.4a Joists Framing on a Solid Sawn Girder Figure 3.4b Joists Framing on a Ledger Figure 3.4c Joists Framing on a Steel Beam
139	Figure 3.4d Joist Framing on a Stud Wall Figure 3.4e Joist Framing on a Foundation Sill Plate Figure 3.4f Girder Bearing on a Concrete Wall Figure 3.4g Cantilever Floor – 3D View
140	Figure 3.5a Loadbearing Wall Offset from Support Figure 3.5b Double Joist Under a Non-Loadbearing Wall Figure 3.5c Blocking Under a Non-Loadbearing Wall Figure 3.5d Double Joist Under a Bathtub
141	Figures 3.6 – 3.12 Figure 3.6a Floor Opening – Stairway Figure 3.6b Floor Opening – Stairway With Landing
142	Figure 3.7a Ceiling Bracing Gable Endwall Figure 3.7b Floor Bracing Endwall
143	Figure 3.8a Corner Stud Hold-down Detail – 3 Studs With Blocking Figure 3.8b Corner Stud Hold-down Detail – 4 Studs Figure 3.8c Interior Stud Detail Figure 3.8d Top Plate Intersection Detail
144	Figure 3.9a Studs and Headers Around Wall Openings Figure 3.9b Studs and Headers Around Wall Openings – Bay Window
145	Figure 3.10a Ridge Beam Details Figure 3.10b Ridge Board and Ceiling Joist Detail Figure 3.10c Ridge Board and Rafter Tie Detail
146	Figure 3.11a Roof Openings – Chimney Figure 3.11b Roof Openings – Gable Dormer
147	Figure 3.11c Roof Openings – Shed Dormer
148	Figure 3.12a Hip Roof Framing Detail
149	Figure 3.12b Valley Roof Framing Detail Figure 3.12c Valley Beam Roof Framing Detail
150	List of Tables
153	Tables 3.1 – 3.5 Table 3.1 Nailing Schedule
154	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure B
156	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure C
159	Table 3.2A Sill Plate to Foundation Connection Resisting Sheare Loads from wind – Exposure B
162	Table 3.2B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Lateral and Shear Loads from Wind – Exposures B and C Table 3.2C Sill or Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Uplift Loads from Wind – Exposures B and C
163	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 30
164	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 50
165	Table 3.3 Sill Plate to Foundation Connection Shear Load for Seismic – GSL = 70
167	Table 3.3A1 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
168	Table 3.3A2 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
169	Table 3.3A3 1/2″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
170	Table 3.3A4 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 30
171	Table 3.3A5 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 50
172	Table 3.3A6 5/8″ Anchor Bolts – Foundation Sill Plate Connection Resisting Shear Loads from Seismic – GSL = 70
173	Table 3.3B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Shear from Seismic
174	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure B
176	Table 3.4 Rafter/ Truss Framing to Wall Connection Requirements for Wind Loads – Exposure C
178	Table 3.4A Rafter and/ or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure B
179	Table 3.4A Rafter and/ or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure C
180	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure B
181	Table 3.4B Shear Walls Resisting Uplift and Shear – Exposure C
182	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure B
183	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure C
184	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure B
185	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure C
186	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure B
187	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure C
188	Tables 3.6 – 3.15 Table 3.6 Ridge Connection Requirements for Wind – Exposure B
189	Table 3.6 Ridge Connection Requirements for Wind – Exposure C
190	Table 3.7 Header Connection Requirements for Wind – Exposure B
191	Table 3.7 Header Connection Requirements for Wind – Exposure C
192	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure B
193	Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure C
194	Table 3.9 Rafter/ Ceiling Joist Heel Joint Connection Requirements
195	Table 3.9A Rafter/ Ceiling Joist Heel Joint Connection Requirements
196	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure B
197	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure C
198	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure B
199	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure C
200	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure B
201	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure C
202	Table 3.12B Maximum Roof Sheathing Spans for Roof Live and Snow Loads
203	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure B
204	Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure C
205	Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure B Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure C
206	Table 3.14 Maximum Floor Sheathing Spans for Live Loads
207	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure B
208	Table 3.15 Minimum Attic Floor/ Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure C
210	Tables 3.16 – 3.19 Table 3.16A1 Roof Diaphragm Limits for Wind – Exposure B – All Slopes
211	Table 3.16A2 Roof Diaphragm Limits for Wind – Exposure B – Low Slopes
212	Table 3.16A3 Roof Diaphragm Limits for Wind – Exposure C – All Slopes
213	Table 3.16A4 Roof Diaphragm Limits for Wind – Exposure C – Low Slopes
214	Table 3.16B Floor Diaphragm Limits for Wind – Exposure B Table 3.16B Floor Diaphragm Limits for Wind – Exposure C
215	Table 3.16C1 Diaphragm Limits for Seismic – GSL = 30
216	Table 3.16C2 Diaphragm Limits for Seismic – GSL = 50
217	Table 3.16C3 Diaphragm Limits for Seismic – GSL = 70
219	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure B
220	Table 3.17A Segmented Shear Wall Sheathing Requirements for Wind – Exposure C
222	Table 3.17C1 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 30
223	Table 3.17C2 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 50
224	Table 3.17C3 Segmented Shear Wall Sheathing Requirements for Seismic – GSL = 70
226	Table 3.17D Shear Wall Assembly Allowable Unit Shear Capacities, Maximum Shear Wall Segment Aspect Ratios, and Sheathing Type Adjustments
230	Table 3.17E Perforated Shear Wall Full Height Sheathing Adjustments
231	Table 3.17F Segmented and Perforated Shear Wall Hold-down Capacity Requirements
232	Table 3.18A Floor Joist Spans for Common Lumber Species – LL = 30 psf
233	Table 3.18B Floor Joist Spans for Common Lumber Species – LL = 40 psf
234	Table 3.19 Representative Metal Plate Connected Wood Floor Truss Spans
236	Tables 3.20 – 3.22 Table 3.20A1 Maximum Exterior Loadbearing and Non-loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B
238	Table 3.20A2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B
240	Table 3.20A3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B
242	Table 3.20A4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure C
244	Table 3.20A5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C
246	Table 3.20A6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C
250	Table 3.20B1 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 – Exposure B – 3/8″ WSP
252	Table 3.20B2 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure B – 3/8″ WSP
254	Table 3.20B3 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure B – 3/8″ WSP
256	Table 3.20B4 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 180 Exposure C – 3/8″ WSP
258	Table 3.20B5 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 240 – Exposure C – 3/8″ WSP
260	Table 3.20B6 Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Stud Deflection Limit = H/ 360 – Exposure C – 3/8″ WSP
262	Table 3.20C Size, Height, and Spacing Limits for Wood Studs
263	Table 3.21 Top Plate Requirements for Wind – Exposures B & C
264	Table 3.22A1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
265	Table 3.22A2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof and Ceiling
266	Table 3.22B1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
267	Table 3.22B2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Center Bearing Floor
268	Table 3.22C1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
269	Table 3.22C2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and One Clear Span Floor
270	Table 3.22D1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
271	Table 3.22D2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Center Bearing Floors
272	Table 3.22E1 Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
273	Table 3.22E2 Laterally Supported (Raised) Header Spans for Exterior Loadbearing Walls – Supporting a Roof, Ceiling, and Two Clear Span Floors
274	Table 3.22F Jack Stud Requirements
275	Tables 3.23 – 3.29 Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure B
276	Table 3.23A Laterally Unsupported (Dropped) Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure C
277	Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure B Table 3.23B Laterally Unsupported (Dropped) Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure C
278	Table 3.23C Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
279	Table 3.23D Reduced Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposures B & C
280	Table 3.24A1 Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
281	Table 3.24A2 Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting One Center Bearing Floor
282	Table 3.24B1 Laterally Unsupported (Dropped) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
283	Table 3.24B2 Laterally Supported (Raised) Header Spans for Interior Loadbearing Walls – Supporting Two Center Bearing Floors
284	Table 3.24C Jack Stud Requirements For Headers in Exterior Loadbearing Walls
286	Table 3.25A Ceiling Joist Spans for Common Lumber Species – LL = 10 psf – L/Δ = 240
287	Table 3.25B Ceiling Joist Spans for Common Lumber Species – LL = 20 psf – L/Δ = 240
288	Table 3.26A Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 180
289	Table 3.26B Rafter Spans for Common Lumber Species – LL = 20 – L/Δ = 240
292	Table 3.26C Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 180
293	Table 3.26D Rafter Spans for Common Lumber Species – GSL = 30 – L/Δ = 240
294	Table 3.26E Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 180
295	Table 3.26F Rafter Spans for Common Lumber Species – GSL = 50 – L/Δ = 240
296	Table 3.26G Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 180
297	Table 3.26H Rafter Spans for Common Lumber Species – GSL = 70 – L/Δ = 240
299	Table 3.27 Representative Metal Plate Connected Wood Roof Truss Spans
300	Table 3.28 Hip and Valley Beam Sizes
301	Table 3.29 Ridge Beam Spans
303	List of Appendix A Wind Load Tables for Uplift Strap and Ridge Strap Connections
304	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure B
305	Table A-3.4 Uplift Strap Connection Requirements (Roof-to-Wall, Wall-to-Wall, and Wall-to Foundation) – Exposure C
306	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure B
307	Table A-3.6 Ridge Tension Strap Connection Requirements for Wind – Exposure C
309	Supplement
310	Table S-1 Maximum Spans and Allowable Total Uniform Loads for Floor Sheathing Table S-2A Maximum Spans and Allowable Total Uniform Loads (Bending and Shear) for Roof Sheathing for Normal Duration Loads
311	Table S-2B Maximum Spans and Allowable Total Uniform Loads (Deflection) for Roof Sheathing for Normal Duration Loads Table S-3 ASD Unit Shear Capacity for Horizontal Diaphragm Assemblies Sheathed with Gypsum Wallboard
313	References
316	Back Cover

AWC WFCM 2001

Sat, 19 Oct 2024 13:27:35 +0000

The 2001 Edition is the current code-referenced version of the Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings. The 2009 International Residential Code (IRC) contains an erroneous reference to the 2008 WFCM. ICC has acknowledged the error and will be correcting it in the next printing of the IRC. The next version of the WFCM is tentatively slated as the 2012 Edition to coincide with the 2012 IRC.

PDF Catalog

PDF Pages	PDF Title
1	WFCM 2001 EDITION
4	Foreword
6	Table of Contents
8	1 General Information
10	1.1 Scope 1.1.1 General 1.1.2 Design Loads 1.1.3 Applicability
11	1.1.4 Foundation Provisions 1.1.5 Protection of Openings 1.2 Materials Standards 1.2.1 Identification
12	1.2.2 Fasteners and Connectors
13	1.3 Definitions
16	1.4 Symbols
18	List of Figures
22	2 Engineered Design
24	2.1 General Provisions 2.1.1 Engineered Requirements 2.1.2 Continuous Load Path 2.1.3 Engineered Design Limitations
25	2.1.4 Interpolation 2.1.5 Design Values
26	2.2 Connections 2.2.1 Lateral Framing Connections 2.2.2 Shear Connections 2.2.3 Wind Uplift Connections
27	2.2.4 Overturning Resistance 2.2.5 Sheathing and Cladding Attachment 2.2.6 Special Connections
28	2.3 Floor Systems 2.3.1 Wood Joist Systems
29	2.3.2 Wood I-Joist Systems 2.3.3 Wood Floor Truss Systems
30	2.3.4 Floor Sheathing 2.3.5 Floor Diaphragm Bracing
31	2.4 Wall Systems 2.4.1 Exterior Walls 2.4.2 Interior Loadbearing Partitions
32	2.4.3 Interior Non-Loadbearing Partitions 2.4.4 Wall Sheathing 2.5 Roof Systems 2.5.1 Wood Rafter Systems
33	2.5.2 Wood I-Joist Roof Systems
34	2.5.3 Wood Roof Truss Systems 2.5.4 Roof Sheathing
35	2.5.5 Roof Diaphragm Bracing
36	List of Figures
38	Figure 2.1a Cantilever With Loadbearing Wall or Shearwall (see 2.1.3.2c) Figure 2.1b Cantilever With Non-Loadbearing Non-Shearwall (see 2.1.3.2c)
39	Figure 2.1c Cantilever With Loadbearing Wall or Shearwall – Designed for Additional Load When Cantilever > d ( see 2.1.3.2c) Figure 2.1d Setback Limits for Loadbearing Wall or Shearwall (see 2.1.3.2d)
40	Figure 2.1e Setback Limits for Loadbearing Wall or Shearwall – Designed for Additional Load When Offset > d ( see 2.1.3.2d) Figure 2.1f Rafter Overhang Limits (see 2.1.3.4c)
41	Figure 2.1g Rake Overhang Limits – Outlookers (see 2.1.3.4c)
42	Figure 2.1h Rake Overhang Limits – Lookout Blocks (see 2.1.3.4c & 3.1.3.4c)
43	Figure 2.2a Typical Lateral Framing Connections
44	Figure 2.2b Shear Connection Locations
45	Figure 2.2c Typical Wind Uplift Connections
46	Figure 2.2d Overturning Detail
47	Figure 2.3 Endwall Blocking Detail
48	Figure 2.4a I-Joist Bearing on Wall With Blocking as End Restraint Figure 2.4b I-Joist Bearing on Wall With Rim Joist as End Restraint Figure 2.4c Continuous I-Joist Over a Bearing Wall Supporting a Wall Above
49	Figure 2.4d Vertical Wall Offset on I-Joist Floor Assembly Figure 2.4e Continuous Cantilevered I-Joist Over a Bearing Wall Supporting a Wall Above
50	Figure 2.5a I-Joist Connection to Sill Plate Figure 2.5b Column Load Transfer Through I-joist Floor System to Foundation Figure 2.5c I-Joist Bevel Cut
51	Figure 2.6a I-Joist Floor Header Figure 2.6b I-Joist Floor Header With Filler Block Between Double Trimmers
52	Figure 2.6c Stair Stringer Connection to I-Joist Floor System Figure 2.7 I-Joist Supported by Hangers Attached to Interior Beam
53	Figure 2.8 I-Joist Web Stiffener Attachment at Bearing Points
54	Figure 2.9a Typical I-Joist Cantilever Supporting Uniform Loads Figure 2.9b Lumber Cantilever Attached to I-Joist
55	Figure 2.10a Rafter Ridge Blocking and Uplift Strap for I- Joist Bearing on a Ridge Beam Figure 2.10b Hanger and Uplift Strap for I-Joist Attached to Side and Ridge Beam Figure 2.10c Filler Block and Ridge Blocking for I- Joist Bearing on Ridge Beam Figure 2.10d I-Joist Connection to Header at Roof Opening
56	Figure 2.11a I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord Overhang Figure 2.11b I-Joist Roof Rafter Bearing on Exterior Wall With Lumber Overhang Figure 2.11c I-Joist Roof Rafter Bearing on Beveled Plate
57	Figure 2.11d I-Joist Roof Rafter Bearing on Exterior Wall With Top Chord and Lumber Overhang Figure 2.11e Gable End Rake Overhang Outlookers Attached to I-Joist Roof Rafter
58	Figure 2.12a Bottom Chord Bearing on Exterior Wall Figure Figure 2.12b Bottom Chord Bearing on Interior Wall Figure 2.12c Top Chord Bearing on Interior Wall Figure 2.12d Top Chord Bearing on Exterior Wall Figure 2.12e Interior Pocket Bearing
59	Figure 2.12f Top Chord Bearing Truss on Ledger Figure 2.12g Bottom Chord Bearing Truss in Hanger
60	Figure 2.13a Truss Cantilever Detail Figure 2.13b Truss Cantilever Detail
61	Figure 2.14 Truss Strongback Details
62	Figure 2.15a Blocking in Floor Space at End Bearing Truss With Band
63	Figure 2.15b Blocking in Floor Space at Interior Loadbearing Walls
64	Figure 2.15c Blocking in Floor Space at Floor Elevation Change
65	Figure 2.16a Roof Truss Overhang Figure 2.16b Roof Truss Overhang and Cantilever Figure 2.16c Roof Truss Overhang and Cantilever Figure 2.16d Roof Truss Overhang With Level Return
66	Figure 2.17a Plan and Isometric of Jack Truss System
67	Figure 2.17b Plan and Isometric of Step Down Truss System
68	Figure 2.18a Roof Intersection with Valley Fill Figure 2.18b Total Roof Truss System
70	List of Tables
71	Table 2.1 Lateral Framing Connection Loads from Wind
72	Table 2.2A Uplift Connection Loads from Wind
73	Table 2.2B Ridge Connection Loads from Wind
74	Table 2.2C Rake Overhang Outlooker Uplift Connection Loads
75	Table 2.3 Thrust Connection Loads
76	Table 2.4 Roof and Wall Sheathing Suction Loads
77	Table 2.5-1 Shear Loads for Roof Diaphragms, Shearwalls, and Floor Diagrams (Wind and Seismic Perpendicular to Ridge)
78	Table 2.5-2 Shear Loads for Roof Diaphragms, Shearwalls, and Floor diagrams (Wind and Seismic Parallel to Ridge)
79	Table 2.5A Lateral Diaphragm Loads from Wind – Perpendicular to Ridge
80	Table 2.5B Lateral Diaphragm Loads from Wind – Parallel to Ridge
81	Table 2.5C Lateral Diaphragm Loads from Seismic
82	Table 2.6 Lateral Diaphragm Loads from Wind – Parallel to Ridge
83	Table 2.7A Floor Joist Spans for 30 psf Live Load
84	Table 2.7B Floor Joist Spans for 40 psf Live Load
85	Table 2.7C Floor Joist Bearing Stresses for Floor Loads
86	Table 2.8A Floor Framing Capacity Requirements for 30 psf Live Load
87	Table 2.8B Floor Framing Capacity Requirements for 40 psf Live Load
89	Table 2.9A Exterior Wall Stud Bending Stresses from Wind Loads
90	Table 2.9A Exterior Wall Stud Bending Stresses from Wind Loads (Cont.)
91	Table 2.9B Exterior Wall Stud Compression Stresses
92	Table 2.9C Interior Loadbearing Wall Stud Compression Stresses from Live Loads
93	Table 2.10 Exterior Wall Induced Moments from Wind Loads
94	Table 2.11 Loadbearing Wall Loads from Snow or Live Loads
95	Table 2.12A Ceiling Joist Spans for 10 psf Live Load
96	Table 2.12B Ceiling Joist Spans for 20 psf Live Load
97	Table 2.13A Ceiling Framing Requirements for 10 psf Live Load
98	Table 2.13B Ceiling Framing Capacity Requirements for 20 psf Live Load
100	Table 2.14A Rafter Spans for 20 psf Ground Snow Load
101	Table 2.14B Rafter Spans for 30 psf Ground Snow Load
102	Table 2.14C Rafter Spans for 50 psf Ground Snow Load
103	Table 2.14D Rafter Spans for 70 psf Ground Snow Load
105	2.15A Roof Framing Capacity Requirements for 20 psf Ground Snow Load
106	2.15B Roof Framing Capacity Requirements for 30 psf Ground Snow Load
107	2.15C Roof Framing Capacity Requirements for 50 psf Ground Snow Load
108	2.15D Roof Framing Capacity Requirements for 70 psf Ground Snow Load
110	Table 2.16 Ridge Beam Capacity Requirements for Interior Center Bearing Roof and Ceiling
111	Table 2.17 Hip
112	3 Prescriptive Design
114	3.1 General Provisions 3.1.1 Prescriptive Requirements 3.1.2 Equivalent Materials and Systems 3.1.3 Prescriptive Design Limitations
115	3.1.4 Interpolation
116	3.2 Connections 3.2.2 Uplift Connections 3.2.1 Lateral Framing and Shear Connections
117	3.2.3 Overturning Resistance 3.2.4 Sheathing and Cladding Attachment 3.2.5 Special Connections
118	3.3 Floor Systems 3.3.1 Wood Joist Systems
119	3.3.2 Wood I-Joist Systems 3.3.3 Wood Floor Truss Systems 3.3.4 Floor Sheathing 3.3.5 Floor Diaphragm Bracing 3.4 Wall Systems 3.4.1 Exterior Walls
120	3.4.2 Interior Loadbearing Partitions
121	3.4.3 Interior Non-Loadbearing Partitions 3.4.4 Wall Sheathing
122	3.5 Roof Systems 3.5.1 Wood Rafter Systems
123	3.5.2 Wood I-Joist Roof Systems 3.5.3 Wood Roof Truss Systems 3.5.4 Roof Sheathing 3.5.5 Roof Diaphragm Bracing
124	List of Figures
125	Figure 3.1a Determining the Number of Stories Above the Foundation
126	Figure 3.1b Methods for Addressing Shearwall Line Offsets Greater Than Four Feet
127	Figure 3.2a Sill Plate Anchorage to Concrete Foundation Wall Figure 3.2b Sill Plate Anchorage to Masonry Foundation Wall Figure 3.2c Bottom Plate Anchorage to Slab-on-Grade
128	Figure 3.2d Wall Assembly to Permanent Wood Foundation Figure 3.2e Wall Assembly to Piles
129	Figure 3.3a Solid Sawn Joist and Rafter Notching and Boring Limits Figure 3.3b Stud Notching and Boring Limits
130	Figure 3.4a Joists Framing on a Solid Sawn Girder Figure 3.4b Joists Framing on a Ledger Figure 3.4c Joists Framing on a Steel Beam
131	Figure 3.4d Joist Framing on a Stud Wall Figure 3.4e Joist Framing on a Foundation Sill Plate Figure 3.4f Girder Bearing on a Concrete Wall Figure 3.4g Cantilever Floor – 3D View
132	Figure 3.5a Loadbearing Wall Offset from Support Figure 3.5b Double Joist Under a Non- Loadbearing Wall Figure 3.5c Blocking Under a Non- Loadbearing Wall Figure 3.5d Double Joist Under a Bathtub
133	Figure 3.6a Floor Opening – Stairway Figure 3.6b Floor Opening – Stairway With Landing
134	Figure 3.7a Ceiling Bracing Gable Endwall Figure 3.7b Floor Bracing Endwall
135	Figure 3.8a Corner Stud Holddown Detail – 3 Studs With Blocking Figure 3.8b Corner Stud Holddown Detail – 4 Studs Figure 3.8c Interior Stud Detail Figure 3.8d Top Plate Intersection Detail
136	Figure 3.9a Studs and Headers Around Wall Openings Figure 3.9b Studs and Headers Around Wall Openings – Bay Window
137	Figure 3.10a Ridge Beam Details Figure 3.10b Ridge Board and Ceiling Joist Detail Figure 3.10c Ridge Board and Rafter Tie Detail
138	Figure 3.11a Roof Openings – Chimney Figure 3.11b Roof Openings – Gable Dormer Figure 3.11c Roof Openings – Shed Dormer
139	Figure 3.12a Hip Roof Framing Detail
140	Figure 3.12b Valley Roof Framing Detail Figure 3.12c Valley Beam Roof Framing Detail
142	List of Tables
146	Table 3.1 Nailing Schedule
147	Table 3.2 Sill or Bottom Plate to Foundation Connection Requirements for Wind – Exposure B
149	Table 3.2A 1/2″ Anchor Bolts – Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure B
150	Table 3.2A 5/8″ Anchor Bolts – Sill Plate to Foundation Connections Resisting Shear Loads from Wind – Exposure B
151	Table 3.2B Bottom Plate to Foundation Connections (Anchor Bolts) Resisting Lateral and Shear Loads from Wind – Exposure B Table 3.2C Sill or Bottom Plate to Foundation Connections ( Anchor Bolts) Resisting Uplift Loads from Wind – Exposure B
152	Table 3.3 Sill or Bottom Plate to foundation Shear Connection Requirements for Seismic
154	Table 3.3A Sill or Bottom Plate to Foundation Connections (Anchor bolts) Resisting Shear Loads from Seismic
155	Table 3.4 Rafter/Truss Framing to Wall Connection Requirements for Wind Loads – Exposure B
157	Table 3.4A Rafter and/or Ceiling Joist to Top Plate Lateral and Shear Connection Requirements – Exposure B
158	Table 3.4B Uplift Strap Connection Requirements – Exposure B ( Roof- to- Wall, Wall- to- Wall, and Wall- to- Foundation)
159	Table 3.4C Rake Overhang Outlooker Uplift Connection Requirements – Exposure B
160	Table 3.5 Top and Bottom Plate to Stud Lateral Connection Requirements for Wind Loads – Exposure B
161	Table 3.5A Top and Bottom Plate to Stud Lateral Connections for Wind Loads – Exposure B
162	Table 3.6 Ridge Connection Requirements for Wind – Exposure B
163	Table 3.6A Ridge Tension Strap Connection Requirements for Wind – Exposure B
164	Table 3.7 Header Connection Requirements for Wind – Exposure B Table 3.8 Window Sill Plate Connection Requirements for Wind – Exposure B
165	Table 3.9 Rafter/Ceiling Joist Heel Joint Connection Requirements
166	Table 3.9A Rafter/Ceiling Joist Heel Joint Connection Requirements (Prescriptive Alternative to Table 3.9)
167	Table 3.10 Roof Sheathing Attachment Requirements for Wind Loads – Exposure B
168	Table 3.11 Wall Sheathing and Cladding Attachment Requirements for Wind Loads – Exposure B
169	Table 3.12A Roof Sheathing Requirements for Wind Loads – Exposure B Table 3.12B Maximum Roof Sheathing Spans for Roof Live and Snow Loads
170	Table 3.13B Wall Cladding Requirements for Wind Loads – Exposure B Table 3.13A Wall Sheathing Requirements for Wind Loads – Exposure B
171	Table 3.14 Maximum Floor Sheathing Spans for Live Loads
172	Table 3.15 Minimum Attic Floor/Ceiling Length When Bracing Gable Endwall for Wind Loads – Exposure B
174	Table 3.16A Range of Allowable Sidewall Lengths for Wind Loads – Exposure B – One Story Slab-on Grade
175	Table 3.16B Range of Allowable Sidewall Lengths for Wind Loads – Exposure B – All Other Cases
176	Table 3.17A Segmented Shearwall Endwall Sheathing Requirements for Wind – Exposure B
177	Table 3.17B Segmented Shearwall Sidewall Sheathing Requirements for Wind – Exposure B
178	Table 3.17C Segmented Shearwall Sheathing Requirements (Assuming Square Building with Seismic Motion Parallel or Perpendicular to Ridge)
180	Table 3.17D Shearwall Assembly Shear Capacities, Maximum Shearwall Segment Aspect Ratios, and Sheathing Type Adjustments
182	Table 3.17E Perforated Shearwall Full Height Sheathing Adjustments
183	Table 3.17F Segmented and Perforated Shearwall Holddown Capacity Requirements
184	Table 3.18A Floor Joist Spans for Common Lumber Species
185	Table 3.18B Floor Joist Spans for Common Lumber Species
186	Table 3.19 Representative Metal Plate Connected Wood Floor Truss Spans
187	Table 3.20A Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Exposure B
189	Table 3.20B Maximum Exterior Loadbearing and Non-Loadbearing Stud Lengths for Common Lumber Species Resisting Interior Zone Wind Loads – Exposure B
192	Table 3.21 Top Plate Splice Requirements for Wind – Exposure B &C – All Other Cases One-Story Slab-on-Grade Top Plate Splice Requirements for Wind – Exposure B &C – All Other Cases
193	Table 3.22A Header Spans for Exterior Loadbearing Walls
194	Table 3.22B Header Spans for Exterior Loadbearing Walls
195	Table 3.22C Header Spans for Exterior Loadbearing Walls
196	Table 3.22D Header Spans for Exterior Loadbearing Walls
197	Table 3.22E Header Spans for Exterior Loadbearing Walls
198	Table 3.22F Jack Stud Requirements
199	Table 3.23A Header Spans for Exterior Loadbearing Walls Resisting Wind Loads – Exposure B
200	Table 3.23B Header Spans for Exterior Non-Loadbearing Walls and Window Sill Plate Spans Resisting Wind Loads – Exposure B Table 3.23C Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposure B & C
201	Table 3.23D Reduced Full Height Stud Requirements for Headers or Window Sill Plates in Exterior Walls Resisting Wind Loads – Exposure B & C
202	Table 3.24A Header Spans for Interior Loadbearing Walls
203	Table 3.24B Header Spans for Interior Loadbearing Walls
204	Table 3.24C Jack Stud Requirements for Headers in Interior Loadbearing Walls
205	Table 3.25A Ceiling Joist Spans for Common Lumber Species
206	Table 3.25B Ceiling Joist Spans for Common Lumber Species
207	Table 3.26A Rafter Spans for Common Lumber Species
208	Table 3.26B Rafter Spans for Common Lumber Species
209	Table 3.26C Rafter Spans for Common Lumber Species
210	Table 3.26D Rafter Spans for Common Lumber Species
211	Table 3.26E Rafter Spans for Common Lumber Species
212	Table 3.26F Rafter Spans for Common Lumber Species
213	Table 3.26G Rafter Spans for Common Lumber Species
214	Table 3.26H Rafter Spans for Common Lumber Species
216	Table 3.27 Representative Metal Plate Connected Wood Roof Truss Spans
217	Table 3.28 Hip and Valley Beam Sizes
218	Table 3.29A Ridge Beam Spans
219	Table 3.29B Ridge Beam Spans
220	Table 3.29C Ridge Beam Spans
221	Table 3.29D Ridge Beam Spans
222	List of Appendix A Wind Load Tables for Exposure C
258	Supplement
259	List of Sawn Lumber Grading Agencies Rules for which grading Rules Writing Agencies is authorized Non-Rules Writing Agencies
260	List of Sawn Lumber Species Combinations
263	Section Properties of Sawn Lumber and Glued Laminated Timber Standard Sizes of Sawn Lumber Properties of Standard Dressed Sizes Definitions
264	Tables Table 1A Nominal and Minimum Dressed Sizes of Sawn Lumber
265	Table 1B Section Properties of Standard Dressed (S4S) Sawn Lumber
267	Table 1C Section Properties of Western Species Glued Laminated Timber
273	Table 1D Section Properties of Southern Pine Glued Laminated Timber
278	Table 2A Maximum Spans and Allowable Total Uniform Loads for Floor Sheathing Table 2B Maximum Spans and Allowable Total Uniform Loads for Roof Sheathing
279	Table 2C Shear Capacities for Horizontal Diaphragm Assemblies
280	Table 3A Maximum Wall Sheathing Spans
281	Table 3B Design Criteria to Determine Shear Capacities for Shearwall Materials
284	Table 3C Shear Capacities for Shearwall Assemblies
286	Table 4A Adjustment Factors
288	Table 4A Base Design Values for Visually Graded Dimension Lumber
293	Table 4B Adjustment Factors
295	Table 4B Design Values for Visually Graded Southern Pine Dimension Lumber
297	Table 4C Adjustment Factors
299	Table 4C Design Values for Mechanically Graded Dimension Lumber1,2,3
300	Table 4C Footnotes
301	Table 4D Adjustment Factors
302	Table 4D Design Values for Visually Graded Timbers (5″ x 5″ and larger)
308	Table 4E Adjustment Factors Table 4E Design Values for Visually Graded Decking
311	Table 5A Adjustment Factors
312	Table 5A Design Values for Structural Glued Laminated Softwood Timber
316	Table 5A Footnotes
317	Table 5B Adjustment Factors
318	Table 5B Design Values for Structural Glued Laminated Softwood Timber
321	Table 5B Footnotes
322	Table 5C Design Values for Structural Glued Laminated Hardwood Timber1,2
323	Table 6A Common Wire Nail Design Values for Single Shear Connections for Wind Design
324	Table 6B Box Nail Design for Single Shear Connection for Wind Design
325	Table 7A Common Wire Nail Withdrawal Design Values for Wind Design
326	Table 7B Box Nail Withdrawal Design Values for Wind Design
327	Table 8 Specific Gravity for Solid Sawn Lumber
328	COMMENTARY
331	Foreword
333	Table of Contents
335	1 General Information
336	1.1 Scope 1.1.1 General 1.1.2 Design Loads
337	1.1.3 Applicability
338	1.1.4 Foundation Provisions 1.1.5 Protection of Openings
341	2 Engineered Design
342	2.1 General Provisions 2.1.1 Engineered Requirements 2.1.3 Engineered Design Limitations
343	2.1.5 Design Values 2.2 Connections 2.3 Floor Systems
344	2.3.1 Wood Joist Systems 2.3.2 Wood I-Joist Systems 2.3.3 Wood Floor Truss Systems 2.4 Wall Systems 2.5 Roof Systems
345	List of Tables
347	Table 2.1 Lateral Framing Connection Loads From Wind
348	Table 2.2A Uplift Connection Loads From Wind
350	Table 2.2B Ridge Connection Loads From Wind
352	Table 2.2C Rake Overhang Outlooker Uplift Connection Loads
353	Table 2.3 Thrust Connection Loads
355	Table 2.4 Roof and Wall Sheathing Suction Loads
356	Tables 2.5-1 and 2.5-2 Shear Loads for Roof Diaphragms, Shearwalls, and Floor Diaphragms
357	Table 2.5A Lateral Diaphragm Loads From Wind – Perpendicular to Ridge
359	Table 2.5B Lateral Diaphragm Loads From Wind – Parallel to Ridge
361	Table 2.7A Floor Joist Spans for 30 psf Live Load
362	Table 2.7B Floor Joist Spans for 40 psf Live Load
363	Table 2.7C Floor Joist Bearing Stresses for Floor Loads
364	Table 2.8A Floor Framing Capacity Requirements for 30 psf Live Load
365	Table 2.8B Floor Framing Capacity Requirements for 40 psf Live Load
366	Table 2.9A Exterior Wall Stud Bending Stresses From Wind Loads
367	Table 2.9B Exterior Wall Stud Compression Stresses
369	Table 2.9C Interior Loadbearing Wall Stud Compression Stresses From Live Loads
370	Table 2.10 Exterior Wall Induced Moments From Wind Loads
371	Table 2.11 Loadbearing Wall Loads From Snow or Live Loads
372	Table 2.12A Ceiling Joist Spans for 10 psf Live Load
373	Table 2.12B Ceiling Joist Spans for 20 psf Live Load
374	Table 2.13A Ceiling Framing Capacity Requirements for 10 psf Live Load
375	Table 2.13B Ceiling Framing Capacity Requirements for 20 psf Live Load
376	Table 2.14A Rafter Spans for 20 psf Live Load
379	Table 2.14B Rafter Spans for 30 psf Ground Snow Load
380	Table 2.14C Rafter Spans for 50 psf Ground Snow Load
381	Table 2.14D Rafter Spans for 70 psf Ground Snow Load
382	Table 2.15A Roof Framing Capacity Requirements for 20 psf Roof Live Load
383	Table 2.15B Roof Framing Capacity Requirements for 30 psf Ground Snow Load
384	Table 2.15C Roof Framing Capacity Requirements for 50 psf Ground Snow Load
385	Table 2.15D Roof Framing Capacity Requirements for 70 psf Ground Snow Load
386	Table 2.16 Ridge Beam Capacity Requirements for Interior Center Bearing Roof and Ceiling
387	Table 2.17 Hip and Valley Beam Capacity Requirements
389	3 Prescriptive Design
390	3.1 General Provisions 3.1.1 Prescriptive Requirements 3.1.2 Equivalent Materials and Systems 3.1.3 Prescriptive Design Limitations
391	3.1.4 Interpolation 3.2 Connections 3.3 Floor Systems 3.4 Wall Systems 3.5 Roof Systems
480	Supplements

AWC WCD 6 2006

Sat, 19 Oct 2024 13:27:34 +0000

Design of durable structures is the result of careful planning and understanding of loads and forces that will likely act upon a building during its lifetime. If these key elements are not taken into consideration, the designer may compromise the ability of the structure to remain fully functional over extended periods of time. When properly designed, wood frame structures will resist damage by moisture and living organisms. Recommendations for control of moisture and protection against decay and insect infestations are contained in this document. Many of the recommendations are established practice among architects, engineers, and builders. Protection of wood frame structures to provide maximum service-life involves four methods of control, which can be handled by proper design and construction: (1) control moisture content of wood, (2) provide effective termite controls, (3) use of durable materials such as naturally durable or pressure treated wood, and (4) quality assurance.

PDF Catalog

PDF Pages	PDF Title
1	WOOD CONSTRUCTION DATA 6
2	Title Page
3	TABLE OF CONTENTS LIST OF ILLUSTRATIONS
5	INTRODUCTION PRINCIPLES OF GOOD DESIGN THE ROLE OF BUILDING CODES
6	MOISTURE CONTROL Sources of Moisture Principles of Water Management
17	TERMITE CONTROL
18	Termite Barrier Chemical Soil Treatment
19	Construction Details In-Ground Bait Systems Fumigation DURABLE MATERIALS Naturally Durable Wood
21	Pressure Treated Wood Conditions of Use for Pressure Treated and Naturally Durable Wood
22	Non-Pressure Treated Wood BIBLIOGRAPHY Treating Specifications and Standards: Selected References: ENDNOTE