Rolled Steel Sections Table 3. Steel S Sections Machinery's Handbook, 31st Edition
2696
t f
Y
“S” is the section symbol for “I” beams. S shapes are designated, in order, by their section letter, actual depth in inches, and nominal weight in pounds per foot. Thus: S 5 × 14.75 indicates an S shape (or I beam) having a depth of 5 inches and a nominal weight of 14.75 pounds per foot.
X X
d
t w
Y
b f
Axis-X-X
Axis Y-Y
Flange
Web Thick- ness, t w inch
Thick- ness, t f inch
Area A inch 2
Width, b f inch
Depth, d inch
I inch 4
S inch 3
r inch
I inch 4
S inch 3
r inch
Designation
9.43 83.3 20.7 1.53 9.71 77.1 19.6 1.57 9.02 47.7 13.2 1.27 9.21 44.9 12.6 1.30 9.47 42.2 12.1 1.34 7.71 50.2 13.9 1.33 7.89 46.8 13.3 1.36
S 24 × 121 35.6 24.50 8.050 1.090 0.800 3160 258 × 106 31.2 24.50 7.870 1.090 0.620 2940 240 × 100 29.3 24.00 7.245 0.870 0.745 2390 199 × 90 26.5 24.00 7.125 0.870 0.625 2250 187 × 80 23.5 24.00 7.000 0.870 0.500 2100 175 S 20 × 96 28.2 20.30 7.200 0.920 0.800 1670 165 × 86 25.3 20.30 7.060 0.920 0.660 1580 155 × 75 22.0 20.00 6.385 0.795 0.635 1280 128 × 66 19.4 20.00 6.255 0.795 0.505 1190 119 S 18 × 70 20.6 18.00 6.251 0.691 0.711 926 103
7.62 29.8 7.83 27.7 6.71 24.1
9.32 1.16 8.85 1.19 7.72 1.08 6.94 1.14 5.57 1.03 5.23 1.07 5.74 1.03 5.16 1.06
89.4 7.07 20.8 64.8 5.75 15.7 59.6 5.95 14.4 50.8 4.55 15.7 45.4 4.77 13.6
× 54.7 16.1 18.00 6.001 0.691 0.461 804 S 15 × 50 14.7 15.00 5.640 0.622 0.550 486 × 42.9 12.6 15.00 5.501 0.622 0.411 447 S 12 × 50 14.7 12.00 5.477 0.659 0.687 305 × 40.8 12.0 12.00 5.252 0.659 0.462 272 × 35 10.3 12.00 5.078 0.544 0.428 229 × 31.8 9.35 12.00 5.000 0.544 0.350 218 S 10 × 35 10.3 10.00 4.944 0.491 0.594 147
38.2 4.72 9.87 3.89 0.980 36.4 4.83 9.36 3.74 1.00 29.4 3.78 8.36 3.38 0.901
× 25.4 7.46 10.00 4.661 0.491 0.311 124 24.7 4.07 6.79 2.91 0.954 S 8 × 23 6.77 8.00 4.171 0.426 0.441 64.9 16.2 3.10 4.31 2.07 0.798 × 18.4 5.41 8.00 4.001 0.426 0.271 57.6 14.4 3.26 3.73 1.86 0.831 S 7 × 20 5.88 7.00 3.860 0.392 0.450 42.4 12.1 2.69 3.17 1.64 0.734 × 15.3 4.50 7.00 3.662 0.392 0.252 36.7 10.5 2.86 2.64 1.44 0.766 S 6 × 17.25 5.07 6.00 3.565 0.359 0.465 26.3 8.77 2.28 2.31 1.30 0.675 × 12.5 3.67 6.00 3.332 0.359 0.232 22.1 7.37 2.45 1.82 1.09 0.705 S 5 × 14.75 4.34 5.00 3.284 0.326 0.494 15.2 6.09 1.87 1.67 1.01 0.620 × 10 2.94 5.00 3.004 0.326 0.214 12.3 4.92 2.05 1.22 0.809 0.643 S 4 × 9.5 2.79 4.00 2.796 0.293 0.326 6.79 3.39 1.56 0.903 0.646 0.569 × 7.7 2.26 4.00 2.663 0.293 0.193 6.08 3.04 1.64 0.764 0.574 0.581 S 3 × 7.5 2.21 3.00 2.509 0.260 0.349 2.93 1.95 1.15 0.586 0.468 0.516 × 5.7 1.67 3.00 2.330 0.260 0.170 2.52 1.68 1.23 0.455 0.390 0.522 Data taken from the “Manual of Steel Construction,” 8th Edition, 1980, with permission of the American Institute of Steel Construction.
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