Section 2306 — California Building Code (Title 24, Part 2)

2306.1 Allowable stress design.¶

The design and construction of wood elements in structures using allowable stress design shall be in accordance with the following applicable standards:

American Wood Council.

ANSI/AWC NDS National Design Specification for Wood Construction

SDPWS Special Design Provisions for Wind and Seismic

American Society of Agricultural and Biological

Engineers.

ASABE EP 484.2 Diaphragm Design of Metal-clad, PostFrame Rectangular Buildings

ASABE EP 486.2 Shallow Post Foundation Design

ASABE 559.1 Design Requirements and Bending Properties for Mechanically Laminated Columns

APA—The Engineered Wood Association.

ANSI 117 Standard Specifications for Structural Glued

Laminated Timber of Softwood Species

ANSI A190.1 Structural Glued Laminated Timber

Panel Design Specification

Plywood Design Specification Supplement 1—

Design & Fabrication of Plywood Curved Panel

Plywood Design Specification Supplement 2—

Design & Fabrication of Glued Plywood-lumber Beams

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Copyright © 2019 ICC. ALL RIGHTS RESERVED. Accessed by Kevin Day (kevin.day@dgs.ca.gov), (California Building Standards Commission) Order Number #100735044 on Jul 24, 2019 03:54 PM (PDT) pursuant to License Agreement with ICC. No further reproduction or distribution authorized. Single user only, copying and networking prohibited. ANY UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT, AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.

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shear values in Tables 2306.2(1) and 2306.2(2) are permitted to be increased 40 percent for wind design.

2306.2.1 Gypsum board diaphragm ceilings. Gypsum board diaphragm ceilings shall be in accordance with Section 2508.6.

2306.3 Wood-frame shear walls.¶

Wood-frame shear walls shall be designed and constructed in accordance with AWC SDPWS. Where panels are fastened to framing members with staples, requirements and limitations of AWC SDPWS shall be met and the allowable shear values set forth in Table 2306.3(1), 2306.3(2) or 2306.3(3) shall be permitted. The allowable shear values in Tables 2306.3(1) and 2306.3(2) are permitted to be increased 40 percent for wind design. Panels complying with ANSI/APA PRP-210 shall be permitted to use design values for Plywood Siding in the AWC SDPWS.

TABLE 2306.1.4 ALLOWABLE LOADS FOR LUMBER DECKING

EWS T300	Glulam Connection Details
EWS S560	Field Notching and Drilling of Glued Laminated Timber Beams
EWS S475	Glued Laminated Beam Design Tables
EWS X450	Glulam in Residential Construction
EWS X440	Product and Application Guide: Glulam
EWS R540	Builders Tips: Proper Storage and Han- dling of Glulam Beams

AITC 104	Typical Construction Details
AITC 110	Standard Appearance Grades for Struc- tural Glued Laminated Timber
AITC 113 AITC 119	Standard for Dimensions of Structural Glued Laminated Timber Standard Specifications for Structural Glued Laminated Timber of Hardwood Species
AITC 200	Inspection Manual

Plywood Design Specification Supplement 3—

Design & Fabrication of Plywood Stressed-skin Panels

Plywood Design Specification Supplement 4—

Design & Fabrication of Plywood Sandwich Panels

Plywood Design Specification Supplement 5—

Design & Fabrication of All-plywood Beams

Truss Plate Institute, Inc.

TPI 1 National Design Standard for Metal Plate Connected Wood Truss Construction

West Coast Lumber Inspection Bureau

2306.1.1 Joists and rafters. The design of rafter spans is permitted to be in accordance with the AWC STJR.

2306.1.2 Plank and beam flooring. The design of plank and beam flooring is permitted to be in accordance with the AWC Wood Construction Data No. 4 .

2306.1.3 Treated wood stress adjustments. The allowable unit stresses for preservative-treated wood need not be adjusted for treatment, but are subject to other adjustments.

The allowable unit stresses for fire-retardant-treated wood, including fastener values, shall be developed from an approved method of investigation that considers the effects of anticipated temperature and humidity to which the fire-retardant-treated wood will be subjected, the type of treatment and the redrying process. Other adjustments are applicable except that the impact load duration shall not apply.

2306.1.4 Lumber decking. The capacity of lumber decking arranged according to the patterns described in Section 2304.9.2 shall be the lesser of the capacities determined for flexure and deflection according to the formulas in Table 2306.1.4.

2306.2 Wood-frame diaphragms.¶

Wood-frame diaphragms shall be designed and constructed in accordance with AWC SDPWS. Where panels are fastened to framing members with staples, requirements and limitations of AWC SDPWS shall be met and the allowable shear values set forth in Table 2306.2(1) or 2306.2(2) shall be permitted. The allowable

PATTERN	ALLOWABLE AREA LOADa, b
PATTERN	Flexure	Deflection
Simple span	σ_b_ 8_Fb_ ′d 2 l 26 -------------- =	σΔ 384Δ_E_′ 5_l_ 4 ------------------d 3 12 ----- =
Two-span continuous	σ_b_ 8_Fb_ ′d 2 l 26 --------------- =	σΔ 185Δ_E_′ l 4 ------------------d 3 12 ----- =
Combination simple- and two-span continuous	σ_b_ 8_Fb_ ′d 2 l 26 --------------- =	σΔ 131Δ_E_′ l 4 ------------------d 3 12 ----- =
Cantilevered pieces intermixed	σ_b_ 20_Fb_ ′d 2 3_l_ 26 ------------------ =	σΔ 105Δ_E_′ l 4 ------------------d 3 12 ----- =
Controlled random layup	Controlled random layup	Controlled random layup
Mechanically laminated decking	σ_b_ 20_Fb_ ′d 2 3_l_ 26 ---------------- =	σΔ 100Δ_E_′ l 4 ------------------ d 3 12 ----- =
2-inch decking	σ_b_ 20_Fb_ ′d 2 3_l_ 26 ---------------- =	σΔ 100Δ_E_′ l 4 ------------------ d 3 12 ----- =
3-inch and 4-inch decking	σ_b_ 20_Fb_ ′d 2 3_l_ 26 ---------------- =	σΔ 116Δ_E_′ l 4 ------------------ d 3 12 ----- =

For SI: 1 inch = 25.4 mm. a. σ b = Allowable total uniform load limited by bending.

σΔ = Allowable total uniform load limited by deflection. b. d = Actual decking thickness.

l = Span of decking. Fb ′ = Allowable bending stress adjusted by applicable factors. E ′ = Modulus of elasticity adjusted by applicable factors.

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TABLE 2306.2(1) ALLOWABLE SHEAR VALUES (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL DIAPHRAGMS UTILIZING STAPLES

WITH FRAMING OF DOUGLAS FIR-LARCH, OR SOUTHERN PINE ^a FOR WIND OR SEISMIC LOADING ^f

PANEL GRADE	STAPLE LENGTH AND GAGEd	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBERS AT ADJOINING PANEL EDGES AND BOUNDARIESe (inches)	BLOCKED DIAPHRAGMS				UNBLOCKED DIAPHRAGMS
PANEL GRADE	STAPLE LENGTH AND GAGEd	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBERS AT ADJOINING PANEL EDGES AND BOUNDARIESe (inches)	Fastener spacing (inches) at diaphragm boundaries (all cases) at continuous panel edges parallel to load (Cases 3, 4), and at all panel edges (Cases 5, 6)b	Fastener spacing (inches) at diaphragm boundaries (all cases) at continuous panel edges parallel to load (Cases 3, 4), and at all panel edges (Cases 5, 6)b	Fastener spacing (inches) at diaphragm boundaries (all cases) at continuous panel edges parallel to load (Cases 3, 4), and at all panel edges (Cases 5, 6)b	Fastener spacing (inches) at diaphragm boundaries (all cases) at continuous panel edges parallel to load (Cases 3, 4), and at all panel edges (Cases 5, 6)b	Fasteners spaced 6 max. at supported edgesb	Fasteners spaced 6 max. at supported edgesb
PANEL GRADE	STAPLE LENGTH AND GAGEd	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBERS AT ADJOINING PANEL EDGES AND BOUNDARIESe (inches)	6	4	21/2 c	2c	Case 1 (No unblocked edges or continuous joints parallel to load)	All other configurations (Cases 2, 3, 4, 5 and 6)
PANEL GRADE	STAPLE LENGTH AND GAGEd	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBERS AT ADJOINING PANEL EDGES AND BOUNDARIESe (inches)	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b	Fastener spacing (inches) at other panel edges (Cases 1, 2, 3 and 4)b
PANEL GRADE	STAPLE LENGTH AND GAGEd	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBERS AT ADJOINING PANEL EDGES AND BOUNDARIESe (inches)	6	6	4	3	3	3
Structural I grades	11/2 16 gage	1	3/8	2	175	235	350	400	155	115
Structural I grades	11/2 16 gage	1	3/8	3	200	265	395	450	175	130
Structural I grades	11/2 16 gage	1	15/32	2	175	235	350	400	155	120
Structural I grades	11/2 16 gage	1	15/32	3	200	265	395	450	175	130
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	3/8	2	160	210	315	360	140	105
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	3/8	3	180	235	355	400	160	120
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	7/16	2	165	225	335	380	150	110
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	7/16	3	190	250	375	425	165	125
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	15/32	2	160	210	315	360	140	105
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	15/32	3	180	235	355	405	160	120
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	19/32	2	175	235	350	400	155	115
Sheathing, single floor and other grades covered in DOC PS 1 and PS 2	11/2 16 gage	1	19/32	3	200	265	395	450	175	130

For SI: 1 inch = 25.4 mm, 1 pound per foot = 14.5939 N/m. a. For framing of other species: (1) Find specific gravity for species of lumber in ANSI/AWC NDS. (2) For staples find shear value from table for Structural I

panels (regardless of actual grade) and multiply value by 0.82 for species with specific gravity of 0.42 or greater, or 0.65 for all other species. b. Space fasteners maximum 12 inches on center along intermediate framing members (6 inches on center where supports are spaced 48 inches on center). c. Framing at adjoining panel edges shall be 3 inches nominal or wider. d. Staples shall have a minimum crown width of ⁷ /16 inch and shall be installed with their crowns parallel to the long dimension of the framing members. e. The minimum nominal width of framing members not located at boundaries or adjoining panel edges shall be 2 inches. f. For shear loads of normal or permanent load duration as defined by the ANSI/AWC NDS, the values in the table shall be multiplied by 0.63 or 0.56,

respectively.

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TABLE 2306.2(2) ALLOWABLE SHEAR VALUES (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL BLOCKED DIAPHRAGMS

UTILIZING MULTIPLE ROWS OF STAPLES (HIGH-LOAD DIAPHRAGMS) WITH FRAMING OF

DOUGLAS FIR-LARCH OR SOUTHERN PINE ^a FOR WIND OR SEISMIC LOADING ^{b, g, h}

PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	BLOCKED DIAPHRAGMS
PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	Cases 1 and 2d	Cases 1 and 2d	Cases 1 and 2d	Cases 1 and 2d	Cases 1 and 2d	Cases 1 and 2d
PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	Fastener Spacing Per Line at Boundaries (inches)	Fastener Spacing Per Line at Boundaries (inches)	Fastener Spacing Per Line at Boundaries (inches)	Fastener Spacing Per Line at Boundaries (inches)	Fastener Spacing Per Line at Boundaries (inches)	Fastener Spacing Per Line at Boundaries (inches)
PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	4	4	21/2	21/2	2	2
PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	Fastener Spacing Per Line at Other Panel Edges (inches)	Fastener Spacing Per Line at Other Panel Edges (inches)	Fastener Spacing Per Line at Other Panel Edges (inches)	Fastener Spacing Per Line at Other Panel Edges (inches)	Fastener Spacing Per Line at Other Panel Edges (inches)	Fastener Spacing Per Line at Other Panel Edges (inches)
PANEL GRADEc	STAPLE GAGEf	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM NOMINAL WIDTH OF FRAMING MEMBER AT ADJOINING PANEL EDGES AND BOUNDARIESe	LINES OF FASTENERS	6	4	4	3	3	2
Structural I grades	14 gage staples	2	15/32	3	2	600	600	860	960	1,060	1,200
Structural I grades	14 gage staples	2	15/32	4	3	860	900	1,160	1,295	1,295	1,400
Structural I grades	14 gage staples	2	19/32	3	2	600	600	875	960	1,075	1,200
Structural I grades	14 gage staples	2	19/32	4	3	875	900	1,175	1,440	1,475	1,795
Sheathing single floor and other grades covered in DOC PS 1 and PS 2	14 gage staples	2	15/32	3	2	540	540	735	865	915	1,080
Sheathing single floor and other grades covered in DOC PS 1 and PS 2	14 gage staples	2	15/32	4	3	735	810	1,005	1,105	1,105	1,195
Sheathing single floor and other grades covered in DOC PS 1 and PS 2	14 gage staples	2	19/32	3	2	600	600	865	960	1,065	1,200
Sheathing single floor and other grades covered in DOC PS 1 and PS 2	14 gage staples	2	19/32	4	3	865	900	1,130	1,430	1,370	1,485
Sheathing single floor and other grades covered in DOC PS 1 and PS 2	14 gage staples	2	23/32	4	3	865	900	1,130	1,490	1,430	1,545

For SI: 1 inch = 25.4 mm, 1 pound per foot = 14.5939 N/m. a. For framing of other species: (1) Find specific gravity for species of framing lumber in ANSI/AWC NDS. (2) For staples, find shear value from table for

Structural I panels (regardless of actual grade) and multiply value by 0.82 for species with specific gravity of 0.42 or greater, or 0.65 for all other species. b. Fastening along intermediate framing members: Space fasteners not greater than 12 inches on center, except 6 inches on center for spans greater than 32

inches. c. Panels conforming to PS 1 or PS 2. d. This table gives shear values for Cases 1 and 2 as shown in Table 2306.2(1). The values shown are applicable to Cases 3, 4, 5 and 6 as shown in Table

2306.2(1), providing fasteners at all continuous panel edges are spaced in accordance with the boundary fastener spacing. e. The minimum nominal depth of framing members shall be 3 inches nominal. The minimum nominal width of framing members not located at boundaries or

adjoining panel edges shall be 2 inches. f. Staples shall have a minimum crown width of ⁷ /16 inch, and shall be installed with their crowns parallel to the long dimension of the framing members. g. High-load diaphragms shall be subject to special inspection in accordance with Section 1705.5.1. h. For shear loads of normal or permanent load duration as defined by the ANSI/AWC NDS, the values in the table shall be multiplied by 0.63 or 0.56,

respectively.

(continued)

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TABLE 2306.3(1) ALLOWABLE SHEAR VALUES (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL SHEAR WALLS UTILIZING STAPLES WITH

FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN PINE ^a FOR WIND OR SEISMIC LOADING ^{b, f, g, i}

PANEL GRADE	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	PANELS APPLIED DIRECT TO FRAMING					PANELS APPLIED OVER 1/" OR 5/" 2 8 GYPSUM SHEATHING
PANEL GRADE	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	Staple length and gageh (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)	Staple length and gageh (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)	Fastener spacing at panel edges (inches)
PANEL GRADE	MINIMUM NOMINAL PANEL THICKNESS (inch)	MINIMUM FASTENER PENETRATION IN FRAMING (inches)	Staple length and gageh (inches)	6	4	3	2d	2d	6	4	3	2d
Structural I sheathing	3/8	1	11/2 16 Gage	155	235	315	400	2 16 Gage	155	235	310	400
Structural I sheathing	7/16	7/16	7/16	170	260	345	440	440	155	235	310	400
Structural I sheathing	15/32	15/32	15/32	185	280	375	475	475	155	235	300	400
Sheathing, ply- wood sidinge except Group 5 Species, ANSI/APA PRP 210 sidinge	5/16 c or1/4 c	1	11/2 16 Gage	145	220	295	375	2 16 Gage	110	165	220	285
Sheathing, ply- wood sidinge except Group 5 Species, ANSI/APA PRP 210 sidinge	3/8	3/8	3/8	140	210	280	360	360	140	210	280	360
Sheathing, ply- wood sidinge except Group 5 Species, ANSI/APA PRP 210 sidinge	7/16	7/16	7/16	155	230	310	395	395	140	210	280	360
Sheathing, ply- wood sidinge except Group 5 Species, ANSI/APA PRP 210 sidinge	15/32	15/32	15/32	170	255	335	430	430	140	210	280	360
Sheathing, ply- wood sidinge except Group 5 Species, ANSI/APA PRP 210 sidinge	19/32	19/32	13/4 16 Gage	185	280	375	475	—	—	—	—	—

panels (regardless of actual grade) and multiply value by 0.82 for species with specific gravity of 0.42 or greater, or 0.65 for all other species. b. Panel edges backed with 2-inch nominal or wider framing. Install panels either horizontally or vertically. Space fasteners maximum 6 inches on center along

intermediate framing members for ³ /8-inch and ⁷ /16-inch panels installed on studs spaced 24 inches on center. For other conditions and panel thickness, space fasteners maximum 12 inches on center on intermediate supports. c. ³ /8-inch panel thickness or siding with a span rating of 16 inches on center is the minimum recommended where applied directly to framing as exterior siding.

For grooved panel siding, the nominal panel thickness is the thickness of the panel measured at the point of fastening. d. Framing at adjoining panel edges shall be 3 inches nominal or wider. e. Values apply to all-veneer plywood. Thickness at point of fastening on panel edges governs shear values. f. Where panels are applied on both faces of a wall and fastener spacing is less than 6 inches on center on either side, panel joints shall be offset to fall on

different framing members, or framing shall be 3 inches nominal or thicker at adjoining panel edges. g. In Seismic Design Category D, E or F, where shear design values exceed 350 pounds per linear foot, all framing members receiving edge fastening from

abutting panels shall be not less than a single 3-inch nominal member, or two 2-inch nominal members fastened together in accordance with Section 2306.1 to transfer the design shear value between framing members. Wood structural panel joint and sill plate nailing shall be staggered at all panel edges. See AWC SDPWS for sill plate size and anchorage requirements. h. Staples shall have a minimum crown width of ⁷ /16 inch and shall be installed with their crowns parallel to the long dimension of the framing members. i. For shear loads of normal or permanent load duration as defined by the ANSI/AWC NDS, the values in the table shall be multiplied by 0.63 or 0.56,

respectively.

TABLE 2306.3(2) ALLOWABLE SHEAR VALUES (plf) FOR WIND OR SEISMIC LOADING ON SHEAR WALLS OF FIBERBOARD

SHEATHING BOARD CONSTRUCTION UTILIZING STAPLES FOR TYPE V CONSTRUCTION ONLY ^{a, b, c, d, e}

THICKNESS AND GRADE (inches)	STAPLE GAGE AND DIMENSIONS	ALLOWABLE SHEAR VALUE (pounds per linear foot) STAPLE SPACING AT PANEL EDGES (inches)a
THICKNESS AND GRADE (inches)	STAPLE GAGE AND DIMENSIONS	4	3	2
1/2 or25/32 Structural	No. 16 gage galvanized staple,7/16″ crown 13/4 inch long	150	200	225
1/2 or25/32 Structural	No. 16 gage galvanized staple, 1″ crown 13/4 inch long	220	290	325

For SI: 1 inch = 25.4 mm, 1 pound per foot = 14.5939 N/m. a. Fiberboard sheathing shall not be used to brace concrete or masonry walls. b. Panel edges shall be backed with 2-inch or wider framing of Douglas Fir-larch or Southern Pine. For framing of other species: (1) Find specific gravity for

species of framing lumber in ANSI/AWC NDS. (2) For staples, multiply the shear value from the table by 0.82 for species with specific gravity of 0.42 or greater, or 0.65 for all other species. c. Values shown are for fiberboard sheathing on one side only with long panel dimension either parallel or perpendicular to studs. d. Fastener shall be spaced 6 inches on center along intermediate framing members. e. Values are not permitted in Seismic Design Category D, E or F.

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TABLE 2306.3(3) ALLOWABLE SHEAR VALUES FOR WIND OR SEISMIC FORCES FOR SHEAR WALLS OF LATH AND

PLASTER OR GYPSUM BOARD WOOD FRAMED WALL ASSEMBLIES UTILIZING STAPLES

TYPE OF MATERIAL	THICKNESS OF MATERIAL	WALL CONSTRUCTION	STAPLE SPACINGb MAXIMUM (inches)	SHEAR VALUEa, c (plf)	MINIMUM STAPLE SIZE f, g
1. Expanded metal or woven wire lath and Portland cement plaster	7/8″	Unblocked	6	180	No. 16 gage galv. staple,7/8″ legs
2. Gypsum lath, plain or perforated	3/8″ lath and 1/2″ plaster	Unblocked	5	100	No. 16 gage galv. staple, 11/8″ long
3. Gypsum sheating	1/2″ × 2′ × 8′	Unblocked	4	75	No. 16 gage galv. staple, 13/4″ long
3. Gypsum sheating	1/2″ × 4′	Blockedd Unblocked	4 7	175 100	175 100
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Unblockedd	7	75	No. 16 gage galv. staple, 11/2″ long
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Unblockedd	4	110	110
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Unblocked	7	100	100
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Unblocked	4	125	125
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Blockede	7	125	125
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	1/2″	Blockede	4	150	150
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	5/8″	Unblockedd	7	115	No. 16 gage galv. staple, 11/2″ legs,15/8″ long
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	5/8″	Unblockedd	4	145	145
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	5/8″	Blockede	7	145	145
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	5/8″	Blockede	4	175	175
4. Gypsum board, gypsum veneer base or water-resistant gypsum backing board	5/8″	Blockede Two-ply	Base ply: 9 Face ply: 7	250	No. 16 gage galv. staple 15/8″ long No. 15 gage galv. staple, 21/4″ long

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per foot = 14.5939 N/m. a. These shear walls shall not be used to resist loads imposed by masonry or concrete walls (see AWC SDPWS). Values shown are for short-term loading due to

wind or seismic loading. Walls resisting seismic loads shall be subject to the limitations in Section 12.2.1 of ASCE 7. Values shown shall be reduced 25 percent for normal loading. b. Applies to fastening at studs, top and bottom plates and blocking. c. Except as noted, shear values are based on a maximum framing spacing of 16 inches on center. d. Maximum framing spacing of 24 inches on center. e. All edges are blocked, and edge fastening is provided at all supports and all panel edges. f. Staples shall have a minimum crown width of ⁷ /16 inch, measured outside the legs, and shall be installed with their crowns parallel to the long dimension of the

framing members. g. Staples for the attachment of gypsum lath and woven-wire lath shall have a minimum crown width of ³ /4 inch, measured outside the legs.