1996 LRFD Supplements - unprotected PDF - American Wood Council

GUIDELINELRFDTOSTRUCTURALLRFD FOR STRUCTURALLUMBER SUPPLEMENTCOMPOSITE LUMBER1313Table 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)RED MAPLESelect Structural 3.30 2.03 0.30 1.28 2.64 1030 1700No. 1 2"-4" thick 2.35 1.49 0.30 1.28 2.16 970 1600No. 2 2.29 1.42 0.30 1.28 1.68 910 1500No. 3 2" & wider 1.33 0.81 0.30 1.28 0.96 790 1300 NELMAStud 1.78 1.15 0.30 1.28 1.08 790 1300Construction 2"-4" thick 2.67 1.62 0.30 1.28 2.22 850 1400Standard 1.46 0.88 0.30 1.28 1.74 790 1300Utility 2"-4" wide 0.70 0.41 0.30 1.28 1.14 730 1200RED OAKSelect Structural 2.92 1.82 0.24 1.71 2.40 850 1400No. 1 2"-4" thick 2.10 1.35 0.24 1.71 1.98 790 1300No. 2 2.03 1.28 0.24 1.71 1.50 730 1200No. 3 2" & wider 1.21 0.74 0.24 1.71 0.90 670 1100 NELMAStud 1.59 1.01 0.24 1.71 0.96 670 1100Construction 2"-4" thick 2.35 1.49 0.24 1.71 2.04 730 1200Standard 1.33 0.81 0.24 1.71 1.56 670 1100Utility 2"-4" wide 0.64 0.41 0.24 1.71 1.02 610 1000REDWOODClear Structural 4.45 2.70 0.42 1.35 4.44 850 1400Select Structural 2-4" thick 3.43 2.16 0.23 1.35 3.60 850 1400Sel. Struct., open grain 2.79 1.69 0.23 0.88 2.64 670 1100No. 1 2" & wider 2.48 1.55 0.23 1.35 2.88 790 1300No. 1, open grain 1.97 1.22 0.23 0.88 2.16 670 1100No. 2 2.35 1.42 0.23 1.35 2.28 730 1200No. 2, open grain 1.84 1.15 0.23 0.88 1.68 610 1000No. 3 1.33 0.81 0.23 1.35 1.32 670 1100No. 3, open grain 1.08 0.68 0.23 0.88 0.96 550 900 RISStud 1.46 0.88 0.23 0.88 1.08 550 900Construction 2"-4" thick 2.10 1.28 0.23 0.88 2.22 550 900Standard 1.14 0.74 0.23 0.88 1.74 550 900Utility 2"-4" wide 0.57 0.34 0.23 0.88 1.14 490 800MIXED SOUTHERN PINE 2Select Structural 5.21 3.24 0.29 1.18 4.32 970 1600No. 1 2"-4" thick 3.68 2.36 0.29 1.18 3.96 910 1500No. 2 2"-4"wide 3.30 2.09 0.26 1.18 3.96 850 1400No. 3/Stud 1.91 1.22 0.26 1.18 2.28 730 1200 SPIBConstruction 2"-4" thick 2.54 1.62 0.29 1.18 4.08 790 1300Standard 1.40 0.88 0.26 1.18 3.48 730 1200Utility 4" wide 0.70 0.41 0.26 1.18 2.28 670 11003REFERENCE STRENGTHS