AISC LRFD 1.pdf

154 NUMERICAL VALUESTABLE 8-50V n(ksi) for Plate Girders by Appendix F2A w for 50 ksi Yield Stress Steel,Tension Field Action Not Includedf vAspect ratio a/ h: Stiffener Spacing to Web Depthht w 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0 2.5 3.0Over3.060 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 26.670 27.0 27.0 27.0 27.0 27.0 27.0 27.0 27.0 26.9 26.1 25.5 24.6 24.0 22.880 27.0 27.0 27.0 27.0 27.0 27.0 26.0 24.5 23.5 22.8 22.3 21.5 20.6 18.690 27.0 27.0 27.0 27.0 26.5 25.1 23.1 21.8 20.4 19.2 18.3 17.0 16.3 14.7100 27.0 27.0 27.0 25.6 23.9 22.6 20.1 17.9 16.5 15.5 14.9 13.8 13.2 11.9110 27.0 27.0 25.3 23.2 21.7 19.6 16.6 14.8 13.7 12.8 12.3 11.4 10.9 9.8120 27.0 25.9 23.2 21.1 18.4 16.5 14.0 12.5 11.5 10.8 10.3 9.6 9.2 8.3130 27.0 23.9 21.4 18.0 15.7 14.1 11.9 10.6 9.8 9.2 8.8 8.2 7.8 7.0140 25.5 22.2 18.4 15.5 13.5 12.1 10.3 9.2 8.4 7.9 7.6 7.0 6.7 6.1150 23.8 19.9 16.1 13.5 11.8 10.6 8.9 8.0 7.3 6.9 6.6 6.1 5.9 5.3160 22.3 17.5 14.1 11.9 10.4 9.3 7.9 7.0 6.5 6.1 5.8 5.4 4.6170 20.6 15.5 12.5 10.5 9.2 8.2 7.0 6.2 5.7 5.4 5.1 4.1180 18.3 13.9 11.1 9.4 8.2 7.3 6.2 5.5 5.1 4.8 4.6 3.7200 14.9 11.2 9.0 7.6 6.6 5.9 5.0 4.5 4.1 3.0220 12.3 9.3 7.5 6.3 5.5 4.9 4.2 2.5240 10.3 7.8 6.3 5.3 4.6 4.1 2.1260 8.8 6.6 5.3 4.5 3.9 3.5 1.8280 7.6 5.7 4.6 3.9LRFD Specification for Structural Steel Buildings, December 27, 1999AMERICAN INSTITUTE OF STEEL CONSTRUCTION