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lrfd 014 - REFERENCE STRENGTHS Table 3.3 Reference...

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Unformatted text preview: REFERENCE STRENGTHS Table 3.3 Reference Strengths for Visually Graded Timbers (5" x 5" and Larger) Tension Bending parallel Species and Size to grain commercial grade Classification Fb EASTERN HEMLOCK—TAMARACK (N) Select Structural Beams and 3.68 No, 1 stringers 3.05 No. 2 1.97 Select Structural Posts and Design values in kips per square inch (ksi) Shear Compression Compression Modulus parallel of perpendicular parallel Grading to grain to grain Elasticity Rules EO E Agency FC (5th pct) (mean) 2.28 7 1300 1.92 7 1300 NELMA 1.20 1100 NSLB 8 to grain 5 90 90 670 3.43 2.43 0.24 1.15 2.40 790 1300 2.79 1.96 0.24 1.15 790 1300 1.65 1.15 0.24 1.15 1.44 670 1100 2.67 1.96 0.19 0.81 1.80 50 1400 2.29 1.62 0.19 0.31 1.50 850 1400 1.46 0.74 0.19 0.81 0.90 610 1000 NELMA No. 1 Timbers No. 2 EASTERN SPRUCE Select Structural Beams and No. 1 Stringers No. 2 Select Structural Posts and 2.54 1.82 0.81 1400 NSLB No. 1 Timbers 2.03 1.49 0.81 1400 No.2 1.14 0.81 0.31 1000 EASTERN WHITE PINE Select Structural Beams and 1100 - 1100 9 0 NELMA 850 610 1.89 0.19 0.73 1.62 670 1.62 0.19 0.73 1.38 670 0,74 0.19 0.73 0.96 550 670 670 550 No. 1 Stringers No. 2 0 Select Structural Posts and 1.76 0.19 0.73 1.74 1100 NSLB No. 1 Timbers 1.42 0.19 0.73 1.50 1100 No.2 0.19 0.73 0.78 900 HEM»FIR Select Structural Beams and 0.20 2.22 790 1300 No. 1 ‘ Stringers 0.20 1.80 790 1300 No. 2 0.20 1.20 870 1100 WCLEB 1300 1300 1 100 1300 Select Structural Posts and 0.20 0.84 No. 1 Timbers 0.20 0.84 No. 2 0.20 0.84 Select Structural 0.20 0.84 2.22 No. 1 0.20 0.84 1.86 1300 No.2 0.20 0.84 1.14 1100 WWPA 790 . 670 790 670 Select Structural Posts and 0.20 0.84 2.34 790 1300 No. 1 Timbers 0.20 0.84 2.04 790 1300 No.2 . 0.20 0.84 0.90 670 1100 790 670 790 670 Beams and Stringers HEMAFIR (NORTH) Select Structural No. 1 No. 2 Select Structural No. 1 No. 2 1300 1300 1100 NLGA 1300 1300 1100 0.20 0.77 2.16 0.20 0.77 1.80 0.77 1.14 0.77 2.28 0.77 2.04 0.77 1.38 Beams and Stringers Posts and Timbers ...
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