1996 LRFD Supplements - unprotected PDF - American Wood Council

GUIDELINELRFDTOSTRUCTURALLRFD FOR STRUCTURALLUMBER SUPPLEMENTCOMPOSITE LUMBER1111Table 3.2Reference Strengths for Visually Graded Dimension LumberDesign values in kips per square inch (ksi) 1Tension Shear Compression Compression ModulusBending parallel parallel perpendicular parallel of GradingSpecies and Size to grain to grain to grain to grain Elasticity Rulescommercial grade Classification E 05 E AgencyF b F t F v F c β F c (5th pct) (mean)EASTERN WHITE PINESelect Structural 3.18 1.55 0.20 0.73 2.88 730 1200No. 1 2"-4" thick 1.97 0.95 0.20 0.73 2.40 670 1100No. 2 1.46 0.74 0.20 0.73 1.98 670 1100No. 3 2" & wider 0.89 0.41 0.20 0.73 1.14 550 900 NELMAStud 1.14 0.54 0.20 0.73 1.26 550 900 NSLBConstruction 2"-4" thick 1.71 0.81 0.20 0.73 2.52 610 1000Standard 0.95 0.47 0.20 0.73 2.04 550 900Utility 2"-4" wide 0.44 0.20 0.20 0.73 1.32 490 800HEM-FIRSelect Structural 3.56 2.43 0.22 0.84 3.60 970 1600No. 1 & Btr 2"-4" thick 2.67 1.89 0.22 0.84 3.24 910 1500No. 1 2.41 1.62 0.22 0.84 3.12 910 1500No. 2 2" & wider 2.16 1.35 0.22 0.84 3.00 790 1300No. 3 1.27 0.81 0.22 0.84 1.74 730 1200 WCLIBStud 1.71 1.08 0.22 0.84 1.92 730 1200 WWPAConstruction 2"-4" thick 2.48 1.55 0.22 0.84 3.60 790 1300Standard 1.40 0.88 0.22 0.84 3.12 730 1200Utility 2"-4" wide 0.64 0.41 0.22 0.84 2.04 670 1100HEM-FIR (NORTH)Select Structural 2"-4" thick 3.30 2.09 0.22 0.77 3.96 1030 1700No. 1/No. 2 2.54 1.49 0.22 0.77 3.48 970 1600No. 3 2" & wider 1.46 0.88 0.22 0.77 2.04 850 1400 NLGAStud 1.97 1.15 0.22 0.77 2.22 850 1400Construction 2"-4" thick 2.92 1.69 0.22 0.77 4.20 910 1500Standard 1.59 0.95 0.22 0.77 3.60 850 1400Utility 2"-4" wide 0.76 0.47 0.22 0.77 2.34 790 1300MIXED MAPLESelect Structural 2.54 1.62 0.29 1.29 2.10 790 1300No. 1 2"-4" thick 1.84 1.15 0.29 1.29 1.68 730 1200No. 2 1.78 1.15 0.29 1.29 1.32 670 1100No. 3 2" & wider 1.02 0.68 0.29 1.29 0.78 610 1000 NELMAStud 1.40 0.88 0.29 1.29 0.84 610 1000Construction 2"-4" thick 2.03 1.28 0.29 1.29 1.74 670 1100Standard 1.14 0.74 0.29 1.29 1.38 610 1000Utility 2"-4" wide 0.57 0.34 0.29 1.29 0.90 550 9003REFERENCE STRENGTHS