ASD/LRFD Manual - American Wood Council

24 M4: SAWN LUMBER
Table M4.5-4c ASD Bending Member Capacity (M', V', and EI), Timbers 1,2
10-inch nominal thickness (9.5 inch dry dressed size), C D = 1.0, C L = 1.0.
Select Structural No. 2
Size (b x d) M' V' x 10 6 EI M' V' x 10 6 EI
Nominal Actual (Single)
Species (in.) (in.) lb-in. lbs lb-in. 2 lb-in. lbs lb-in. 2
Douglas Fir-Larch
Hem-Fir
Southern Pine
Spruce-Pine-Fir
10 x 10 9.5 x 9.5 214,000 10,200 1,090 107,000 10,200 882
10 x 12 9.5 x 11.5 314,000 12,400 1,930 157,000 12,400 1,570
10 x 14 9.5 x 13.5 456,000 14,500 3,120 249,000 14,500 2,530
10 x 16 9.5 x 15.5 592,000 16,700 4,720 324,000 16,700 3,830
10 x 18 9.5 x 17.5 744,000 18,800 6,790 407,000 18,800 5,520
10 x 20 9.5 x 19.5 913,000 21,000 9,390 499,000 21,000 7,630
10 x 10 9.5 x 9.5 171,000 8,420 882 82,200 8,420 747
10 x 12 9.5 x 11.5 251,000 10,200 1,570 120,000 10,200 1,320
10 x 14 9.5 x 13.5 370,000 12,000 2,530 192,000 12,000 2,140
10 x 16 9.5 x 15.5 418,000 13,700 3,830 250,000 13,700 3,240
10 x 18 9.5 x 17.5 604,000 15,500 5,520 314,000 15,500 4,670
10 x 20 9.5 x 19.5 742,000 17,300 7,630 385,000 17,300 6,460
10 x 10 9.5 x 9.5 214,000 9,930 1,020 121,000 9,930 815
10 x 12 9.5 x 11.5 314,000 12,000 1,810 178,000 12,000 1,440
10 x 14 9.5 x 13.5 427,000 14,100 2,920 242,000 14,100 2,340
10 x 10 9.5 x 9.5 150,000 7,520 882 71,000 7,520 679
10 x 12 9.5 x 11.5 220,000 9,100 1,570 105,000 9,100 1,200
10 x 14 9.5 x 13.5 313,000 10,700 2,530 171,000 10,700 1,950
Table M4.5-4d ASD Bending Member Capacity (M', V', and EI), Timbers 1,2
nominal dimensions > 10 inch (actual = nominal – 1/2 inch), C D = 1.0, C L = 1.0.
Select Structural No. 2
Size (b x d) M' V' x 10 6 EI M' V' x 10 6 EI
Nominal Actual (Single)
Species (in.) (in.) lb-in. lbs lb-in. 2 lb-in. lbs lb-in. 2
Douglas Fir-Larch
Hem-Fir
Southern Pine
Spruce-Pine-Fir
12 x 12 11.5 x 11.5 380,000 15,000 2,330 190,000 15,000 1,890
14 x 14 13.5 x 13.5 607,000 20,700 4,430 304,000 20,700 3,600
16 x 16 15.5 x 15.5 905,000 27,200 7,700 452,000 27,200 6,250
18 x 18 17.5 x 17.5 1,280,000 34,700 12,500 642,000 34,700 10,200
20 x 20 19.5 x 19.5 1,760,000 43,100 19,300 878,000 43,100 15,700
12 x 12 11.5 x 11.5 304,000 12,300 1,890 146,000 12,300 1,600
14 x 14 13.5 x 13.5 486,000 17,000 3,600 233,000 17,000 3,040
16 x 16 15.5 x 15.5 724,000 22,400 6,250 347,000 22,400 5,290
18 x 18 17.5 x 17.5 1,030,000 28,600 10,200 493,000 28,600 8,600
20 x 20 19.5 x 19.5 1,410,000 35,500 15,700 673,000 35,500 13,300
12 x 12 11.5 x 11.5 380,000 14,500 2,190 215,000 14,500 1,750
14 x 14 13.5 x 13.5 607,000 20,000 4,150 344,000 20,000 3,320
12 x 12 11.5 x 11.5 266,000 11,000 1,890 127,000 11,000 1,460
14 x 14 13.5 x 13.5 425,000 15,200 3,600 202,000 15,200 2,770
1 . Multiply tabulated M' and V' capacity by 1.728 to obtain LRFD capacity (λ = 0.8). Tabulated EI is applicable for both ASD and LRFD. See NDS Appendix N for
more information.
2. Tabulated values apply to members in a dry service condition, C M = 1.0; normal temperature range, C t = 1.0; and unincised members, C i = 1.0; members braced
against buckling, C L = 1.0.
American Wood Council