Problem 8.28
Given
- find adjusted capacities per unit foot width
- 15/32 in.-thick OSB (assume CG = 1; it is not Structural I)
- 32/16 span rating
- dry conditions (CM = 1)
- at least 24-in. wide (Cs = 1)
- (1.2D + 1.6L) load (assume floor applications; CD = 1 for L)
From ASD/LFRD Manual chapter M9
Also available in NDS table 9.3.1.
ASD Adjustments
See NDS commentary C9.3 or APA Panel Design Specification for adjustment factors.
Capacity Symbol ASD/LRFD
Manual TableAPA Panel Design
Specification TableUnadjusted Value for
Strong/Weak OrientationUnit CD CM Ct CG Cs Adjusted Value for
Strong/Weak OrientationPANEL BENDING STRENGTH FbS M9.2-1 8 445
165lb-in./ft
of panel width1 1 1 1 1 445
165PANEL AXIAL TENSION FtA M9.2-2 8 2,800
1,650lb/ft
of panel width1 1 1 1 1 2,800
1,650PANEL THROUGH-THE-THICKNESS SHEAR Fvtv M9.2-4 8 180
180lb/in. of shear-
resisting panel length1 1 1 1 180
180PANEL SHEAR-IN-THE-PLANE Fs(Ib/Q) M9.2-3 8 165
165lb/ft
of panel width1 1 1 1 165
165PANEL AXIAL COMPRESSION FcA M9.2-1 8 3,550
3,100lb/ft
of panel width1 1 1 1 3,550
3,100PANEL BENDING STIFFNESS EI M9.2-1 8 115,000
25,000lb-in.2/ft
of panel width1 1 1 115,000
25,000PANEL AXIAL STIFFNESS EA M9.2-1 8 4,150,000
3,600,000lb/ft
of panel width1 1 1 4,150,000
3,600,000PANEL RIGIDITY THROUGH-THE-THICKNESS Gvtv M9.2-4 8 83,500
83,500lb/in.
of panel depth1 1 1 83,500
83,500PANEL COMPRESSION PERPENDICULAR TO FACE Fc⊥ ? ? ? psf 1 1 1 ?