Square Hollow Structural Sections (HSS) – Sizes, Strength & Specifications
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Nominal Size 3) | Weight | Wall Thickness | b/t 1) | h/t 1) | Cross Sectional Area 2) | I 1) | S 1) | r 1) | Z 1) | Torsional Stiffness Constant J | Torsional Shear Constant C | Surface Area |
---|---|---|---|---|---|---|---|---|---|---|---|---|
(in x in x in) | (lbf/ft) | (in) | - | - | (in2) | (in4) | (in3) | (in) | (in3) | (in4) | (in3) | (ft2/ft) |
32 x 32 x 5/8 | 259.83 | 0.625 | 48.2 | 48.2 | 76.4 | 12300 | 771 | 12.7 | 890 | 19700 | 1230 | 10.34 |
32 x 32 x 1/2 | 210.72 | 0.500 | 61.0 | 61.0 | 61.9 | 10100 | 634 | 12.8 | 727 | 15900 | 991 | 10.45 |
32 x 32 x 3/8 | 159.37 | 0.375 | 82.3 | 82.3 | 46.8 | 7750 | 485 | 12.9 | 553 | 12000 | 750 | 10.51 |
30 x 30 x 5/8 | 242.82 | 0.625 | 45.0 | 45.0 | 71.4 | 10100 | 673 | 11.9 | 778 | 16200 | 1070 | 9.68 |
30 x 30 x 1/2 | 197.11 | 0.500 | 57.0 | 57.0 | 57.9 | 8320 | 555 | 12.0 | 637 | 13000 | 869 | 9.79 |
30 x 30 x 3/8 | 149.16 | 0.375 | 77.0 | 77.0 | 43.8 | 6370 | 424 | 12.1 | 485 | 9870 | 658 | 9.84 |
28 x 28 x 5/8 | 225.80 | 0.625 | 41.8 | 41.8 | 66.4 | 8140 | 582 | 11.1 | 674 | 13100 | 933 | 9.01 |
28 x 28 x 1/2 | 183.50 | 0.500 | 53.0 | 53.0 | 53.9 | 6730 | 480 | 11.2 | 552 | 10600 | 755 | 9.12 |
28 x 28 x 3/8 | 138.95 | 0.375 | 71.7 | 71.7 | 40.8 | 5150 | 368 | 11.2 | 421 | 8010 | 572 | 9.17 |
26 x 26 x 5/8 | 208.79 | 0.625 | 38.6 | 38.6 | 61.4 | 6460 | 497 | 10.3 | 577 | 10500 | 801 | 8.34 |
26 x 26 x 1/2 | 169.89 | 0.500 | 49.0 | 49.0 | 49.9 | 5350 | 411 | 10.4 | 474 | 8430 | 649 | 8.45 |
26 x 26 x 3/8 | 128.74 | 0.375 | 66.3 | 66.3 | 37.8 | 4110 | 316 | 10.4 | 362 | 6400 | 492 | 8.51 |
24 x 24 x 5/8 | 191.78 | 0.625 | 35.4 | 35.4 | 56.4 | 5030 | 419 | 9.44 | 487 | 8180 | 679 | 7.68 |
24 x 24 x 1/2 | 156.28 | 0.500 | 45.0 | 45.0 | 45.9 | 4170 | 348 | 9.53 | 401 | 6610 | 551 | 7.79 |
24 x 24 x 3/8 | 118.53 | 0.375 | 61.0 | 61.0 | 34.8 | 3210 | 268 | 9.60 | 307 | 5020 | 418 | 7.84 |
22 x 22 x 5/8 | 174.76 | 0.625 | 32.2 | 32.2 | 51.4 | 3820 | 347 | 8.62 | 406 | 6260 | 567 | 7.01 |
22 x 22 x 1/2 | 142.67 | 0.500 | 41.0 | 41.0 | 41.9 | 3190 | 290 | 8.72 | 335 | 5070 | 461 | 7.12 |
22 x 22 x 3/8 | 108.32 | 0.375 | 55.7 | 55.7 | 31.8 | 2460 | 223 | 8.78 | 256 | 3850 | 350 | 7.17 |
20 x 20 x 5/8 | 157.75 | 0.625 | 29.0 | 29.0 | 46.4 | 2830 | 283 | 7.81 | 331 | 4670 | 465 | 6.34 |
20 x 20 x 1/2 | 129.06 | 0.500 | 37.0 | 37.0 | 37.9 | 2370 | 237 | 7.90 | 275 | 3790 | 379 | 6.45 |
20 x 20 x 3/8 | 98.12 | 0.375 | 50.3 | 50.3 | 28.8 | 1830 | 183 | 7.97 | 211 | 2880 | 288 | 6.51 |
18 x 18 x 5/8 | 140.73 | 0.625 | 25.8 | 25.8 | 41.4 | 2020 | 224 | 6.99 | 264 | 3370 | 373 | 5.68 |
18 x 18 x 1/2 | 115.45 | 0.500 | 33.0 | 33.0 | 33.9 | 1700 | 189 | 7.08 | 220 | 2740 | 305 | 5.79 |
18 x 18 x 3/8 | 87.91 | 0.375 | 45.0 | 45.0 | 25.8 | 1320 | 147 | 7.15 | 169 | 2090 | 232 | 5.84 |
16 x 16 x 5/8 | 127.37 | 0.581 | 24.5 | 24.5 | 35.0 | 1370 | 171 | 6.25 | 200 | 2170 | 276 | 5.17 |
16 x 16 x 1/2 | 103.30 | 0.465 | 31.4 | 31.4 | 28.3 | 1130 | 141 | 6.31 | 164 | 1770 | 224 | 5.20 |
16 x 16 x 3/8 | 78.52 | 0.349 | 42.8 | 42.8 | 21.5 | 873 | 109 | 6.37 | 126 | 1350 | 171 | 5.23 |
16 x 16 x 5/16 | 65.87 | 0.291 | 52.0 | 52.0 | 18.1 | 739 | 92.3 | 6.39 | 106 | 1140 | 144 | 5.25 |
14 x 14 x 5/8 | 110.36 | 0.581 | 21.1 | 21.1 | 30.3 | 896 | 128 | 5.44 | 151 | 1430 | 208 | 4.50 |
14 x 14 x 1/2 | 89.68 | 0.465 | 27.1 | 27.1 | 24.6 | 743 | 106 | 5.49 | 124 | 1170 | 170 | 4.53 |
14 x 14 x 3/8 | 68.31 | 0.349 | 37.1 | 37.1 | 18.7 | 577 | 82.5 | 5.55 | 95.4 | 900 | 130 | 4.57 |
14 x 14 x 5/16 | 57.36 | 0.291 | 45.1 | 45.1 | 15.7 | 490 | 69.9 | 5.58 | 80.5 | 759 | 109 | 4.58 |
12 x 12 x 5/8 | 93.34 | 0.581 | 17.7 | 17.7 | 25.7 | 548 | 91.3 | 4.62 | 109 | 885 | 151 | 3.83 |
12 x 12 x 1/2 | 76.07 | 0.465 | 22.8 | 22.8 | 20.9 | 457 | 76.2 | 4.68 | 89.6 | 728 | 123 | 3.87 |
12 x 12 x 3/8 | 58.10 | 0.349 | 31.4 | 31.4 | 16.0 | 357 | 59.5 | 4.73 | 69.2 | 561 | 94.6 | 3.90 |
12 x 12 x 5/16 | 48.86 | 0.291 | 38.2 | 38.2 | 13.4 | 304 | 50.7 | 4.76 | 58.6 | 474 | 79.7 | 3.92 |
12 x 12 x 1/4 | 39.43 | 0.233 | 48.5 | 48.5 | 10.8 | 248 | 41.4 | 4.79 | 47.6 | 384 | 64.5 | 3.93 |
10×10 x 5/8 | 76.33 | 0.581 | 14.2 | 14.2 | 21.0 | 304 | 60.8 | 3.80 | 73.2 | 498 | 102 | 3.17 |
10×10 x 1/2 | 62.46 | 0.465 | 18.5 | 18.5 | 17.2 | 256 | 51.2 | 3.86 | 60.7 | 412 | 84.2 | 3.20 |
10×10 x 3/8 | 47.90 | 0.349 | 25.7 | 25.7 | 13.2 | 202 | 40.4 | 3.92 | 47.2 | 320 | 64.8 | 3.23 |
10×10 x 5/16 | 40.35 | 0.291 | 31.4 | 31.4 | 11.1 | 172 | 34.5 | 3.94 | 40.1 | 271 | 54.8 | 3.25 |
10×10 x 1/4 | 32.63 | 0.233 | 39.9 | 39.9 | 8.96 | 141 | 28.3 | 3.97 | 32.7 | 220 | 44.4 | 3.27 |
10×10 x 3/16 | 24.73 | 0.174 | 54.5 | 54.5 | 6.76 | 108 | 21.6 | 4.00 | 24.8 | 167 | 33.6 | 3.28 |
9 x 9 x 1/2 | 55.66 | 0.465 | 16.4 | 16.4 | 15.3 | 182 | 40.6 | 3.45 | 48.4 | 296 | 67.4 | 2.87 |
9 x 9 x 3/8 | 42.79 | 0.349 | 22.8 | 22.8 | 11.8 | 145 | 32.2 | 3.51 | 37.8 | 231 | 52.1 | 2.90 |
9 x 9 x 5/16 | 36.10 | 0.291 | 27.9 | 27.9 | 9.92 | 124 | 27.6 | 3.54 | 32.1 | 196 | 44.0 | 2.92 |
9 x 9 x 1/4 | 29.23 | 0.233 | 35.6 | 35.6 | 8.03 | 102 | 22.7 | 3.56 | 26.2 | 159 | 35.8 | 2.93 |
9 x 9 x 3/16 | 22.18 | 0.174 | 48.7 | 48.7 | 6.06 | 78.2 | 17.4 | 3.59 | 20.0 | 121 | 27.1 | 2.95 |
8 x 8 x 5/8 | 59.32 | 0.581 | 10.8 | 10.8 | 16.4 | 146 | 36.5 | 2.99 | 44.7 | 244 | 63.2 | 2.50 |
8 x 8 x 1/2 | 48.85 | 0.465 | 14.2 | 14.2 | 13.5 | 125 | 31.2 | 3.04 | 37.5 | 204 | 52.4 | 2.53 |
8 x 8 x 3/8 | 37.69 | 0.349 | 19.9 | 19.9 | 10.4 | 99.6 | 24.9 | 3.10 | 29.4 | 160 | 40.7 | 2.57 |
8 x 8 x 5/16 | 31.84 | 0.291 | 24.5 | 24.5 | 8.76 | 85.6 | 21.4 | 3.13 | 25.1 | 136 | 34.5 | 2.58 |
8 x 8 x 1/4 | 25.82 | 0.233 | 31.3 | 31.3 | 7.10 | 70.7 | 17.7 | 3.15 | 20.5 | 111 | 28.1 | 2.60 |
8 x 8 x 3/16 | 19.63 | 0.174 | 43.0 | 43.0 | 5.37 | 54.4 | 13.6 | 3.18 | 15.7 | 84.5 | 21.3 | 2.62 |
7 x 7 x 5/8 | 50.81 | 0.581 | 9.0 | 9.0 | 14.0 | 93.3 | 26.7 | 2.58 | 33.1 | 158 | 47.1 | 2.17 |
7 x 7 x 1/2 | 42.05 | 0.465 | 12.1 | 12.1 | 11.6 | 80.5 | 23.0 | 2.63 | 27.9 | 133 | 39.3 | 2.20 |
7 x 7 x 3/8 | 32.58 | 0.349 | 17.1 | 17.1 | 8.97 | 64.9 | 18.6 | 2.69 | 22.1 | 105 | 30.7 | 2.23 |
7 x 7 x 5/16 | 27.59 | 0.291 | 21.1 | 21.1 | 7.59 | 56.1 | 16.0 | 2.72 | 18.9 | 89.7 | 26.1 | 2.25 |
7 x 7 x 1/4 | 22.42 | 0.233 | 27.0 | 27.0 | 6.17 | 46.5 | 13.3 | 2.75 | 15.5 | 73.5 | 21.3 | 2.27 |
7 x 7 x 3/16 | 17.08 | 0.174 | 37.2 | 37.2 | 4.67 | 36.0 | 10.3 | 2.77 | 11.9 | 56.1 | 16.2 | 2.28 |
6 x 6 x 5/8 | 42.30 | 0.581 | 7.3 | 7.3 | 11.7 | 55.1 | 18.4 | 2.17 | 23.2 | 94.9 | 33.4 | 1.83 |
6 x 6 x 1/2 | 35.24 | 0.465 | 9.9 | 9.9 | 9.74 | 48.2 | 16.1 | 2.23 | 19.8 | 81.1 | 28.1 | 1.87 |
6 x 6 x 3/8 | 27.48 | 0.349 | 14.2 | 14.2 | 7.58 | 39.4 | 13.1 | 2.28 | 15.8 | 64.6 | 22.1 | 1.90 |
6 x 6 x 5/16 | 23.34 | 0.291 | 17.6 | 17.6 | 6.43 | 34.3 | 11.4 | 2.31 | 13.6 | 55.4 | 18.9 | 1.92 |
6 x 6 x 1/4 | 19.02 | 0.233 | 22.8 | 22.8 | 5.24 | 28.6 | 9.54 | 2.34 | 11.2 | 45.6 | 15.4 | 1.93 |
6 x 6 x 3/16 | 14.53 | 0.174 | 31.5 | 31.5 | 3.98 | 22.3 | 7.42 | 2.37 | 8.63 | 35.0 | 11.8 | 1.95 |
6 x 6 x 1/8 | 9.86 | 0.116 | 48.7 | 48.7 | 2.70 | 15.5 | 5.15 | 2.39 | 5.92 | 23.9 | 8.03 | 1.97 |
5-1/2 x 5-1/2 x 3/8 | 24.93 | 0.349 | 12.8 | 12.8 | 6.88 | 29.7 | 10.8 | 2.08 | 13.1 | 49.0 | 18.4 | 1.73 |
5-1/2 x 5-1/2 x 5/16 | 21.21 | 0.291 | 15.9 | 15.9 | 5.85 | 25.9 | 9.43 | 2.11 | 11.3 | 42.2 | 15.7 | 1.75 |
5-1/2 x 5-1/2 x 1/4 | 17.32 | 0.233 | 20.6 | 20.6 | 4.77 | 21.7 | 7.90 | 2.13 | 9.32 | 34.8 | 12.9 | 1.77 |
5-1/2 x 5-1/2 x 3/16 | 13.25 | 0.174 | 28.6 | 28.6 | 3.63 | 17.0 | 6.17 | 2.16 | 7.19 | 26.7 | 9.85 | 1.78 |
5-1/2 x 5-1/2 x 1/8 | 9.01 | 0.116 | 44.4 | 44.4 | 2.46 | 11.8 | 4.30 | 2.19 | 4.95 | 18.3 | 6.72 | 1.80 |
5 x 5 x 1/2 | 28.43 | 0.465 | 7.8 | 7.8 | 7.88 | 26.0 | 10.4 | 1.82 | 13.1 | 44.6 | 18.7 | 1.53 |
5 x 5 x 3/8 | 22.37 | 0.349 | 11.3 | 11.3 | 6.18 | 21.7 | 8.67 | 1.87 | 10.6 | 36.1 | 14.9 | 1.57 |
5 x 5 x 5/16 | 19.08 | 0.291 | 14.2 | 14.2 | 5.26 | 19.0 | 7.61 | 1.90 | 9.16 | 31.2 | 12.8 | 1.58 |
5 x 5 x 1/4 | 15.62 | 0.233 | 18.5 | 18.5 | 4.30 | 16.0 | 6.41 | 1.93 | 7.61 | 25.8 | 10.5 | 1.60 |
5 x 5 x 3/16 | 11.97 | 0.174 | 25.7 | 25.7 | 3.28 | 12.6 | 5.03 | 1.96 | 5.89 | 19.9 | 8.08 | 1.62 |
5 x 5 x 1/8 | 8.16 | 0.116 | 40.1 | 40.1 | 2.23 | 8.80 | 3.52 | 1.99 | 4.07 | 13.7 | 5.53 | 1.63 |
4-1/2 x 4-1/2 x 1/2 | 25.03 | 0.465 | 6.7 | 6.7 | 6.95 | 18.0 | 8.02 | 1.61 | 10.2 | 31.3 | 14.8 | 1.37 |
4-1/2 x 4-1/2 x 3/8 | 19.82 | 0.349 | 9.9 | 9.9 | 5.48 | 15.3 | 6.78 | 1.67 | 8.36 | 25.7 | 11.9 | 1.40 |
4-1/2 x 4-1/2 x 5/16 | 16.96 | 0.291 | 12.5 | 12.5 | 4.68 | 13.5 | 5.99 | 1.70 | 7.27 | 22.3 | 10.2 | 1.42 |
4-1/2 x 4-1/2 x 1/4 | 13.91 | 0.233 | 16.3 | 16.3 | 3.84 | 11.4 | 5.08 | 1.73 | 6.06 | 18.5 | 8.44 | 1.43 |
4-1/2 x 4-1/2 x 3/16 | 10.70 | 0.174 | 22.9 | 22.9 | 2.93 | 9.02 | 4.01 | 1.75 | 4.71 | 14.4 | 6.49 | 1.45 |
4-1/2 x 4-1/2 x 1/8 | 7.31 | 0.116 | 35.8 | 35.8 | 2.00 | 6.35 | 2.82 | 1.78 | 3.27 | 9.92 | 4.45 | 1.47 |
4 x 4 x 1/2 | 21.63 | 0.465 | 5.6 | 5.6 | 6.02 | 11.9 | 5.95 | 1.41 | 7.70 | 21.0 | 11.2 | 1.20 |
4 x 4 x 3/8 | 17.27 | 0.349 | 8.5 | 8.5 | 4.78 | 10.3 | 5.13 | 1.46 | 6.39 | 17.5 | 9.14 | 1.23 |
4 x 4 x 5/16 | 14.83 | 0.291 | 10.7 | 10.7 | 4.10 | 9.14 | 4.57 | 1.49 | 5.59 | 15.3 | 7.91 | 1.25 |
4 x 4 x 1/4 | 12.21 | 0.233 | 14.2 | 14.2 | 3.37 | 7.80 | 3.90 | 1.52 | 4.69 | 12.8 | 6.56 | 1.27 |
4 x 4 x 3/16 | 9.42 | 0.174 | 20.0 | 20.0 | 2.58 | 6.21 | 3.10 | 1.55 | 3.67 | 9.96 | 5.07 | 1.28 |
4 x 4 x 1/8 | 6.46 | 0.116 | 31.5 | 31.5 | 1.77 | 4.40 | 2.20 | 1.58 | 2.56 | 6.91 | 3.49 | 1.30 |
3-1/2 x 3-1/2 x 3/8 | 14.72 | 0.349 | 7.0 | 7.0 | 4.09 | 6.48 | 3.70 | 1.26 | 4.69 | 11.2 | 6.77 | 1.07 |
3-1/2 x 3-1/2 x 5/16 | 12.70 | 0.291 | 9.0 | 9.0 | 3.52 | 5.84 | 3.34 | 1.29 | 4.14 | 9.89 | 5.90 | 1.08 |
3-1/2 x 3-1/2 x 1/4 | 10.51 | 0.233 | 12.0 | 12.0 | 2.91 | 5.04 | 2.88 | 1.32 | 3.50 | 8.35 | 4.92 | 1.10 |
3-1/2 x 3-1/2 x 3/16 | 8.15 | 0.174 | 17.1 | 17.1 | 2.24 | 4.05 | 2.31 | 1.35 | 2.76 | 6.56 | 3.83 | 1.12 |
3-1/2 x 3-1/2 x 1/8 | 5.61 | 0.116 | 27.2 | 27.2 | 1.54 | 2.90 | 1.66 | 1.37 | 1.93 | 4.58 | 2.65 | 1.13 |
3 x 3 x 3/8 | 12.17 | 0.349 | 5.6 | 5.6 | 3.39 | 3.77 | 2.51 | 1.05 | 3.25 | 6.64 | 4.74 | 0.90 |
3 x 3 x 5/16 | 10.58 | 0.291 | 7.3 | 7.3 | 2.94 | 3.45 | 2.30 | 1.08 | 2.90 | 5.94 | 4.18 | 0.92 |
3 x 3 x 1/4 | 8.81 | 0.233 | 9.9 | 9.9 | 2.44 | 3.02 | 2.01 | 1.11 | 2.48 | 5.08 | 3.52 | 0.93 |
3 x 3 x 3/16 | 6.87 | 0.174 | 14.2 | 14.2 | 1.89 | 2.46 | 1.64 | 1.14 | 1.97 | 4.03 | 2.76 | 0.95 |
3 x 3 x 1/8 | 4.75 | 0.116 | 22.9 | 22.9 | 1.30 | 1.78 | 1.19 | 1.17 | 1.40 | 2.84 | 1.92 | 0.97 |
2-1/2 x 2-1/2 x 5/16 | 8.45 | 0.291 | 5.6 | 5.6 | 2.35 | 1.82 | 1.45 | 0.879 | 1.88 | 3.20 | 2.74 | 0.75 |
2-1/2 x 2-1/2 x 1/4 | 7.11 | 0.233 | 7.7 | 7.7 | 1.97 | 1.63 | 1.30 | 0.908 | 1.63 | 2.79 | 2.35 | 0.77 |
2-1/2 x 2-1/2 x 3/16 | 5.59 | 0.174 | 11.4 | 11.4 | 1.54 | 1.35 | 1.08 | 0.937 | 1.32 | 2.25 | 1.86 | 0.78 |
2-1/2 x 2-1/2 x 1/8 | 3.90 | 0.116 | 18.6 | 18.6 | 1.07 | 0.998 | 0.798 | 0.965 | 0.947 | 1.61 | 1.31 | 0.80 |
2-1/4 x 2-1/4 x 1/4 | 6.26 | 0.233 | 6.7 | 6.7 | 1.74 | 1.13 | 1.00 | 0.805 | 1.28 | 1.96 | 1.85 | 0.68 |
2-1/4 x 2-1/4 x 3/16 | 4.96 | 0.174 | 9.9 | 9.9 | 1.37 | 0.952 | 0.847 | 0.835 | 1.04 | 1.60 | 1.48 | 0.70 |
2-1/4 x 2-1/4 x 1/8 | 3.48 | 0.116 | 16.4 | 16.4 | 0.96 | 0.712 | 0.633 | 0.863 | 0.755 | 1.15 | 1.05 | 0.72 |
2 x 2 x 1/4 | 5.41 | 0.233 | 5.6 | 5.6 | 1.51 | 0.745 | 0.745 | 0.703 | 0.964 | 1.31 | 1.41 | 0.60 |
2 x 2 x 3/16 | 4.32 | 0.174 | 8.5 | 8.5 | 1.19 | 0.640 | 0.640 | 0.732 | 0.797 | 1.09 | 1.14 | 0.62 |
2 x 2 x 1/8 | 3.05 | 0.116 | 14.2 | 14.2 | 0.84 | 0.486 | 0.486 | 0.761 | 0.584 | 0.796 | 0.817 | 0.63 |
1-3/4 x 1-3/4 x 3/16 | 3.68 | 0.174 | 7.1 | 7.1 | 1.02 | 0.405 | 0.462 | 0.630 | 0.585 | 0.699 | 0.844 | 0.53 |
1-5/8 x 1-5/8 x 3/16 | 3.36 | 0.174 | 6.3 | 6.3 | 0.93 | 0.312 | 0.384 | 0.579 | 0.491 | 0.544 | 0.712 | 0.49 |
1-5/8 x 1-5/8 x 1/8 | 2.42 | 0.116 | 11.0 | 11.0 | 0.67 | 0.246 | 0.302 | 0.608 | 0.370 | 0.410 | 0.522 | 0.51 |
1-1/2 x 1-1/2 x 3/16 | 3.04 | 0.174 | 5.6 | 5.6 | 0.84 | 0.235 | 0.314 | 0.528 | 0.406 | 0.414 | 0.592 | 0.45 |
1-1/2 x 1-1/2 x 1/8 | 2.20 | 0.116 | 9.9 | 9.9 | 0.61 | 0.188 | 0.251 | 0.556 | 0.309 | 0.316 | 0.438 | 0.47 |
1-1/4 x 1-1/4 x 3/16 | 2.40 | 0.174 | 4.2 | 4.2 | 0.67 | 0.121 | 0.194 | 0.425 | 0.259 | 0.218 | 0.383 | 0.37 |
1-1/4 x 1-1/4 x 1/8 | 1.78 | 0.116 | 7.8 | 7.8 | 0.49 | 0.101 | 0.162 | 0.454 | 0.204 | 0.174 | 0.292 | 0.38 |
1)
- b - nominal width minus 3 times the design wall thickness t
- t - design wall thickness
- h - nominal depth minus 3 times the design wall thickness t
- I - moment of inertia of cross-section
- S - elastic section modulus
- r - radius of gyration
- Z - plastic section modulus
2)Note that the cross sectional areas are calculated for sections with rounded corners (outside corner radii equal to 2 times the design wall thickness).
3) Note that nominal thickness may not be the same as actual thickness. Actual thickness may vary with manufacturing methods.
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