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lrfd 003 - LRFD STRUCTURAL LUMBER SUPPLEMFET Table 3.2...

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Unformatted text preview: LRFD STRUCTURAL LUMBER SUPPLEMFET Table 3.2 Reference Strengths for Visually Graded Dimension Lumber Species and commercial grade ASPEN Select Structural No. 1 No. 2 No. 3 Stud Construction Standard Utility BEECH-BIRCH—HICKORY Select Structural No. ‘i No. 2 No. 3 Stud Construction Standard Utility COTTONWOOD Select Structural No. 1 No. 2 No. 3 Stud Construction Standard Utility DOUGLAS FIR-LARCH Select Structural, Not 1 & Btr No. 1 No. 2 No. 3 Stud Construction Standard Utility ' Design values in kips per square inch (ksi)1 Tension Shear Compression Compression Modulus Bending parallel parallel perpendicular Size _ to grain to grain to grain Classification Fb parallel of 2"-4" thick to grain Elasticity E05 E (5th pct) (mean) 2" & wider 2"—4" thick 2"-4" wide 2"—4" thick 2" a wider 2"-4" thick 2"-4" wide 2"—4" thick 2" & wider 2"—4" thick 2"—4" wide 2"—4" thick 2“ 8: wider . 224" thick 2"-4" wide Grading Rules Agency NELMA NLSB WW PA NELMA NSLB SHlBNEHlS BONHHHJEH ...
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