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STRENGTH PROPERTIES AND ALLOWABLE
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allowable load allowable stresses angle of load ASTM bending bolt clear wood CN CN column compression parallel connection connectors critical section curve dead load deck deflection depth determined diagram diameter distribution Douglas fir edge distance face grain factor Figure flange Forest Products Laboratory girder given glued glued-laminated grade horizontal shear Illustrative Example inches joints k-in knots laminations live load load to grain loading conditions lumber midspan minimum modulus of elasticity modulus of rupture moisture content nails neutral axis obtained occurs OSZ OSZ OSZ parallel to grain percent perpendicular to grain plates plywood panels proportional limit ratio scarf joints Select Structural shear stress shown in Fig Southern pine spacing span specific gravity sss sss Standard strength properties stringers Table tensile tensile stress tests thickness Timber tion trusses values vertical width wood beams Z/l Z/l Z/l