4-196 DESIGN OF COMPRESSION MEMBERS Table 4-12 (continued) Available Strengthin

Question

4-196 DESIGN OF COMPRESSION MEMBERS Table 4-12 (continued) Available Strengthin Axial Compression, kips Eccentrically Loaded Single Angles Fy = 36 ksi! L4-L3% 4x 3x Shape 140 5.80 11.1 8.50 7.20 11.1 9.80 Design LRFD 58.8 38.2 574 37656.5 30.6 46.0 33.350.1 48.1 1 38.558.0 374 56.4 36354.7 30.4456 328 49.331.547.3 49.9 | 30.4 | 45.2 31.2 46.9 129.9 | 45.0 2 36.8 55.735.2 53.3 3 328 49.8 30.6 466 20 44.1 26440.3 28743427541.5 | 27.8 | 42.3 | 25.4 | 38.8 | 23.6 362 | 21.3.1 32.6 25.8 .| 3g.1 24.6.1 37.2 5 $ 232 355 2071318190292169 250 227 1344 215327 619.2295 16.825.9 152 23.5 13.4 20.7 19.6298 18.5 282 7158243 13.6 21.0 122 18.9 10.7 16.6 16725.5 15.7 23.9 | 13. 20,0 | 11.0 | 17.0 | 9.831 152 | 8.57| 133 | 14.0 21.5 113.11 20.0 9 10.8679.13 14.18.09 257.00 109 119182 10 16.9 109.2014.27.6811.8 6.78 10.55.84 9.04 10215.5941 14.4 8.78 1348.11 12.4 9 3.25 0633 LRFD 2.49 0.636 2.09 0.638 1.69 0.639 3.25 0.679 2.89 0.681 in Shape is sender for compression with 36 ks Shape exceeds compact Imit lor texure with 38 ksi AMERICAN INSTITUTE OF STEEL CONSTRUCTION

Explanation / Answer

we use polar moment of interia in designing angles so we use z-axis as the reference

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