SPECIFICATION FOR THE DESIGN OF - Transcon Steel

Commentary on the Prescriptive Method for One and Two Family Dwellings - 2004 79
E12.3 Length of Shear Panel (End Walls)
P = 3,260/2 panels = 1,630 lb per shear wall
Per Table 2211.1(1) of IBC 2000:
V n = 910/2.5 = 364 lb with 6” fastener spacing.
Length of shear panel required = 1,630/364 = 4.48 ft/shear wall
4’
12
3
9’
Slab on Grade Foundation
H
H
H
H
4’ 4’
H
5’ 5’
H
Sidewall Elevation
“H” indicates Hold Down
Endwall Elevation
Verify the above design with the requirements of the Prescriptive Method:
Range of allowable side wall lengths of one-story slab-on-grade
(Table E13.1)
Minimum = 14 feet/1.21 = 11.57’ (adjusted for Exposure Category B)
Maximum = 60 feet/1.21 = 66.11 (adjusted for Exposure Category B)
Required minimum length of full height sheathing on side walls (Type I):
Minimum = 7’(1.13) = 7.91 feet (6” fastener spacing)
(Table E13.3)
Required minimum length of full height sheathing on side walls (Type I):
Minimum sheathing length = 8’(1.13)(1/1.21)(0.8)
= 5.23 feet (6” fastener spacing) (Table E13.4)
(1.21 adjustment factor for Exp. B; 1.13 adjustment factor for 9’ walls; 0.8
adjustment factor for mean roof height < 15’)
Use (2) 4’ long shear walls with 7/16” OSB fastened with No. 8 screws at 6” o.c. at edges.
Required minimum length of full height sheathing on end walls (Type I):