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WOOD

TABLE 2308.6.1 a
WALL BRACING REQUIREMENTS

MAXIMUM
BRACED PANEL LOCATION, DISTANCE OF
MAXIMUM
SEISMIC STORY SPACING OF SPACING (O.C.) AND MINIMUM PERCENTAGE (X) BRACED WALL
DESIGN CONDITION (SEE PANELS FROM
CATEGORY SECTION 2308.2) BRACED EACH END OF
WALL LINES BRACED WALL
Bracing method b LINE
LIB DWB, WSP SFB, PBS, PCP, HPS, GB c, d

35- 0 Each end and Each end and  25- 0 o.c. Each end and  25- 0 o.c. 12- 6
 25- 0 o.c.

A and B 35- 0 Each end and Each end and  25- 0 o.c. Each end and  25- 0 o.c. 12- 6
 25- 0 o.c.

35- 0 NP Each end and  25- 0 o.c. Each end and  25- 0 o.c. 12- 6

35- 0 NP Each end and  25- 0 o.c. Each end and  25- 0 o.c. 12- 6

C
Each end and  25- 0 o.c. Each end and  25- 0 o.c.
35- 0 NP (minimum 25% of wall (minimum 25% of wall 12- 6
length) e length) e

S < 0.50: Each end and  S < 0.50: Each end and 
DS
DS
25- 0 o.c. (minimum 21% 25- 0 o.c. (minimum 43%
of wall length) e of wall length) e

0.5  S < 0.75: Each end 0.5  S < 0.75: Each end
DS
DS
and  25- 0 o.c. (minimum and  25- 0 o.c. (minimum
32% of wall length) e 59% of wall length) e
D and E 25- 0 NP 8- 0
0.75  S  1.00: Each end 0.75  S  1.00: Each end
DS
DS
and  25- 0 o.c. (minimum and  25- 0 o.c. (minimum
37% of wall length) e 75% of wall length) e
S > 1.00: Each end and  S > 1.00: Each end and 
DS
DS
25- 0 o.c. (minimum 48% 25- 0 o.c. (minimum 100%
of wall length) e of wall length) e
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
NP = Not Permitted.
a. This table specifies minimum requirements for braced wall panels along interior or exterior braced wall lines.
b. See Section 2308.6.3 for full description of bracing methods.
c. For Method GB, gypsum wallboard applied to framing supports that are spaced at 16 inches on center.
d. The required lengths shall be doubled for gypsum board applied to only one face of a braced wall panel.
e. Percentage shown represents the minimum amount of bracing required along the building length (or wall length if the structure has an irregular shape).

2018 INTERNATIONAL BUILDING CODE ® 523
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