1996 LRFD Supplements - unprotected PDF - American Wood Council

GUIDELINELRFDTOSTRUCTURALLRFD FOR STRUCTURALLUMBER SUPPLEMENTCOMPOSITE LUMBER4343Table 5.3Column Selection Tables, Timbers8-inch nominal thickness (7.5 inch dry dressed size), λ = 0.80, φ c= 0.90.Factored Column Resistance (kips)Select Structural No. 1 No. 28" width 10" width 8" width 10" width 8" width 10" widthColumn (=7.5") (=9.5") (=7.5") (=9.5") (=7.5") (=9.5")Species Length (ft) 6≅ c P' 6≅ c P'x 6≅ c P'y 6≅ c P' 6≅ c P'x 6≅ c P'y 6≅ c P' 6≅ c P'x 6≅ c P'y2 111.1 141.1 140.7 96.7 122.7 122.5 46.0 58.4 58.34 108.9 139.4 137.9 95.0 121.5 120.4 45.6 58.0 57.76 104.7 136.3 132.6 91.9 119.2 116.5 44.8 57.4 56.7Douglas Fir- 8 97.7 131.5 123.7 86.9 115.6 110.0 43.6 56.5 55.2Larch 1 10 87.2 124.3 110.4 79.2 110.4 100.3 41.8 55.3 52.912 74.2 114.3 94.0 69.2 103.2 87.7 39.3 53.6 49.814 61.2 102.0 77.5 58.4 94.0 74.0 36.1 51.4 45.716 50.1 88.6 63.4 48.5 83.4 61.5 32.3 48.6 40.92 94.2 119.6 119.3 82.2 104.3 104.1 36.3 46.1 46.04 92.2 118.1 116.8 80.7 103.2 102.2 36.0 45.8 45.66 88.5 115.4 112.1 77.9 101.1 98.7 35.4 45.4 44.98 82.2 111.1 104.1 73.4 98.0 92.9 34.6 44.8 43.8Hem-Fir 1 10 72.9 104.6 92.3 66.5 93.3 84.2 33.3 43.8 42.112 61.5 95.8 77.9 57.7 86.8 73.0 31.5 42.6 39.914 50.4 84.9 63.9 48.3 78.6 61.2 29.2 41.0 36.916 41.1 73.3 52.1 39.9 69.2 50.6 26.4 39.0 33.42 91.8 116.6 116.3 79.8 101.3 101.1 50.8 64.5 64.44 90.3 115.4 114.3 78.6 100.4 99.6 50.3 64.0 63.76 87.3 113.2 110.6 76.4 98.7 96.8 49.2 63.2 62.3Southern 8 82.4 109.8 104.3 72.9 96.2 92.3 47.5 62.0 60.2Pine 10 75.0 104.7 95.0 67.6 92.6 85.6 45.0 60.3 57.012 65.4 97.8 82.8 60.4 87.6 76.4 41.5 57.9 52.614 55.1 88.8 69.7 52.1 81.0 65.9 37.2 54.8 47.116 45.7 78.7 57.8 43.9 73.2 55.7 32.5 51.0 41.12 77.4 98.2 98.0 67.7 85.9 85.8 48.4 61.4 61.34 76.1 97.2 96.3 66.8 85.2 84.6 47.8 60.9 60.56 73.6 95.4 93.3 64.9 83.8 82.3 46.6 60.0 59.0Spruce- 8 69.7 92.6 88.2 62.0 81.8 78.5 44.7 58.7 56.6Pine-Fir 10 63.7 88.6 80.7 57.6 78.8 73.0 41.8 56.7 53.012 55.8 82.9 70.7 51.7 74.6 65.4 38.0 54.1 48.114 47.3 75.7 59.9 44.7 69.2 56.7 33.3 50.6 42.216 39.3 67.3 49.8 37.9 62.7 48.0 28.5 46.3 36.15MEMBER SELECTION TABLESNote:1. The reference compression parallel to grain strength value for the WWPA's No.2 grade is different from that for theWCLIB's No.2 grade. The tabulated values for No.2 grade are based on the lower reference strength value of WWPAand WCLIB.