7/16-inch wood structural panel sheathing with 8d common nails spaced at 4 inches on center at panel edges, 12 inches on center at intermediate supports; 8d common nails at 4 inches on center at braced wall panel end posts with hold down attached
N/A
—
2
top
35
1900
—
bottom
45
3200
5100
3
top
40
1900
—
middle
45
3500
5400
bottom
60
3500
8900
D1
1
1 only
45
2100
—
2
top
45
2100
—
bottom
45
3700
5800
3
top
45
2100
—
middle
45
3700
5800
bottom
60
3700
9500
D2
1
1 only
55
2300
—
2
top
55
2300
—
bottom
55
3900
6200
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.479 kPa, 1 pound-force = 4.448 N.
Hold down force is minimum allowable stress design load for connector providing uplift tie from wall framing at end of braced wall panel at the noted story to wall framing at end of braced wall panel at the story below, or to foundation or foundation wall. Use single story hold down force where edges of braced wall panels do not align; a continuous load path to the foundation shall be maintained. [See Figure R602.12].
Where hold down connectors from stories above align with stories below, use cumulative hold down force to size middle and bottom story hold down connectors. (See Figure R602.12).
0, D1and D2. Wall bracing where stone and masonry veneer exceeds the first story height in Seismic Design Categories D0, D1 and D2 shall conform to the requirements of Sections R602.10 and R602.11 and the following requirements.
Braced wall panels shall begin no more than 8 feet (2440 mm) from each end of a braced wall line and shall be spaced a maximum of 25 feet (7620 mm) on center.
R602.12.1.3 Braced Wall Panel Construction
Braced wall panels shall be constructed of sheathing with a thickness of not less than 7/16 inch (11 mm) nailed with 8d common nails spaced 4 inches (102 mm) on center at all panel edges and 12 inches (305 mm) on center at intermediate supports. The end of each braced wall panel shall have a hold down device in accordance with Table R602.12(2) installed at each end. Size, height and spacing of wood studs shall be in accordance with Table R602.3(5).
R602.12.1.4 Minimum Length of Braced Panel
Each braced wall panel shall be at least 48 inches (1219 mm) in length, covering a minimum of 3 stud spaces where studs are spaced 16 inches (406 mm) on center and covering a minimum of 2 stud spaced where studs are spaced 24 inches on center.