Section R. 408.40212 - Triangle wall bracing systemRule 212.
(1) A triangle wall bracing system shall consist of all of the following elements assembled as shown in figure 3:(a) Scaffold grade lumber that is suitable for planking. (i) A 16-foot, 2-inch by 10-inch vertical brace.(ii) A 16-foot, 2-inch by 10-inch diagonal brace.(iii) A 16-foot, 2-inch by 10-inch horizontal brace.(b) Two nominal 2 x 4 wood stiffeners.(d) Base of wall or footing anchor.(2) The angle of intersection of the diagonal brace and the horizontal brace shall be between 35 and 45 degrees. The diagonal brace shall not intersect the vertical brace below the midpoint height of the masonry wall.(3) The triangle wall bracing system shall be aligned on both sides of the wall when installed.(4) The maximum horizontal spacing for a triangle wall bracing system shall not exceed the values as shown in table 4 for the corresponding maximum wall heights and as illustrated in figure 4. Click Here To View Image
TABLE 4(1)
INTERMEDIATE PERIOD (GREATER THAN 24 HOURS)
Maximum Horizontal Spacina for the Trianale Wall Bracing System for Resisting 40 mph Wind
| Nominal Thickness | Maximum Horizontal Spacing | Maximum Wall Height | Maximum Panel Width(2)(3) |
| 4" | 9'-1" | 16' | 16'-0" |
| 6" | 13'-6" | 16' | 24'-0" |
| 8" | 17'-11" | 16' | 32'-0" |
| 10" | 20'-10" | 16' | 38'-0" |
| 12" | 23'-6" | 16' | 42'-8" |
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Mich. Admin. Code R. 408.40212