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1 <br /> DOUGLAS FIR-LARCH #2 (WWPA/WCLIB) <br /> Fb = 900 psi <br /> F„ = 180 psi <br /> E = 1600 ksi <br /> F„ = 625 psi <br /> Mallow(ft-k) = Fb' * S Vauow(k) =2/3 ' Fv' ' b ' d El i S <br /> Size CD = 1.0 = 1.15 = 1.33 Co = 1 0 = 1.15 = 1.33 (ib-m x 101' (in-) (in') CF <br /> 3 x 4 0.57 0.66 0.77 1.05 1.21 1.40 14.29 8.93 5.104 1.5 <br /> [0.66] [0.76] [0.88] <br /> 4 x 4 0.80 0.92 1.07 1.47 1.69 1.96 20.01 12.51 7.146 1.5 <br /> [0.92] [1.06) [1.23] <br /> 3 x 6 1.23 1.41 1.64 1.65 1.90 2.20 55.46 34.66 12.60 1.3 <br /> [1.41] [1.63] [1.88) <br /> 4 x 6 1.72 1.98 2.29 2.31 2.66 3.08 77.64 48.53 17.65 1.3 <br /> [1.98] [2.28] [2.64] <br /> 3 x 8 1.97 2.27 2.63 2.18 2.50 2.90 127.03 79.39 21.90 1.2' <br /> [2.27] [2.61] [3.02] <br /> 4 x 8 2.99 3.44 3.99 3.05 3.50 4.06 177.84 111.15 30.66 1.3 <br /> [3.44] [3.95] [4.58] <br /> 3 x 10 2.94 3.38 3.92 2.78 3.19 3.70 263.82 164.89 35.65 1.1 <br /> [3.38] [3.89] [4.51] <br /> 4 x 10 4.49 5.17 5.99 3.89 4.47 5.18 369.34 230.84 49.91 1.2 <br /> [5.17] [5.94] 16.89] <br /> 3 x 12 3.96 4.55 5.27 3.38 3.88 4.50 474.61 296.63 52.73 1.0 <br /> [4.55] [5.23] [6.06] <br /> 4 x 12 6.09 7.00 8.12 4.73 5.43 6.30 664.45 415.28 73.83 1.1 <br /> [7.00] [8.06] [9.34] <br /> 3 x 14 4.94 5.68 6.58 3.98 4.57 5.30 775.40 484.63 73.15 0.9 <br /> [5.68] [6.53] [7.57] <br /> 4 x 14 7.68 8.83 10.24 5.57 6.40 7.42 1,085.56 678.48 102.41' 1.0 <br /> [8.83] [10.16] [11.78] <br /> Notes; [Repetitive Member Factor for(1)2x_and (2) 2x_beams in brackets] <br /> (12L - <br />