Web Crippling Load

1. All allowable loads listed are based upon AISI S100 except members noted with an * are based on AISI S220
2. Listed allowable loads apply to S-sections
3. For back-to-back members, the allowable loads are for the two-member assembly.
4. Listed allowable loads are based on members fastened to supports except back-to-back members under two-flange loading.
5. For back-to-back members, the web fasteners should be placed as close as possible to each flange.
6. Listed allowable loads are based on unpunched webs. Consult with licensed engineer if punched web loads are needed
7. “h” refers to flat dimension of the web. For a C-shaped member, h is the total depth minus twice the radius minus twice the thickness

1. loads followed by ‘a’ denote bearing length to web height (N/h) excceds limit of 2. Per AISI S100 section A1.2(c), Min safety factor is 2
2. loads followed by ‘b’ denote bearing length to thickness (N/t) excceds limit of 210. Per AISI S100 section A1.2(c), Min safety factor is 2

Web Crippling Conditions

  • Condition 1: End One-Flange Reaction
  • Condition 2: Interior One-End Reaction
  • Condition 3: End Two-Flange Reaction
  • Condition 4: Interior Two-Flange Reaction
  • Complies with North American Specification for the Design of Cold-Formed Steel Structural Members, S100-16 (2020) w/ Supplement 2-20 using U.S. provisions,
    and meets the requirements of the IBC 2015 Building Code, as well as the 2011 California Building Code.

Allowable Web Crippling Loads (lbs) – Single Members

Allowable Web Crippling Loads (lbs) – Single Members
Member Design Thickness
(in)		 Inside Radius
(in)		 Yield Strength
(ksi)		 Condition 1
Fastened to Support
Bearing Length (in)		 Condition 2
Fastened to Support
Bearing Length (in)		 Condition 3
Fastened to Support
Bearing Length (in)		 Condition 4
Fastened to Support
Bearing Length (in)
1 3.5 6 1 3.5 6 1 3.5 6 1 3.5 6
162S-18* 0.0188 0.0843 33 61 87a 109ab 97 115a 138ab 50 62a 74ab 135 156a 181ab
162S-27* 0.0283 0.0796 33 136 189a 235ab 242 279a 331ab 123 147a 173ab 322 361a 413ab
162S-30* 0.0312 0.0781 33 164 226a 282a 299 342a 405a 152 180a 211a 395 439a 502a
162S-33* 0.0346 0.0764 33 200 274a 340a 374 423a 500a 189 222a 260a 490 541a 616a
162S-43* 0.0451 0.0712 33 331 446a 550a 655 727a 851a 330 379a 440a 849 920a 1038a
162S-54* 0.0566 0.0849 50 752 999a 1225a 1522 1661a 1930a 793 897a 1031a 2025 2160a 2418a
162S-68* 0.0713 0.1069 50 1132 1479a 1804a 2334 2502a 2885a 1262 1402a 1601a 3200 3362a 3735a
250S-18* 0.0188 0.0843 33 58 94 103ab 94 136 135ab 41 57 60ab 122 161 163ab
250S-27* 0.0283 0.0796 33 130 206 225ab 237 331 324ab 106 145 149ab 297 381 382ab
250S-30* 0.0312 0.0781 33 157 248 270a 293 406 397a 132 179 184a 367 466 466a
250S-33 0.0346 0.0764 33 173 271 294a 330 453 442a 150 201 206a 411 519 517a
250S-43 0.0451 0.0712 33 287 443 478a 580 780 754a 267 351 356a 720 892 880a
250S-54 0.0566 0.0849 50 656 996 1069a 1350 1785 1712a 652 842 847a 1730 2109 2066a
250S-68 0.0713 0.1069 50 990 1480 1579a 2073 2693 2562a 1049 1333 1331a 2750 3302 3210a
350S-18* 0.0188 0.0843 33 54 88 97b 92 132 131b 32 44 46b 109 144 146b
350S-27* 0.0283 0.0796 33 124 197 215b 232 324 318b 90 123 126b 275 352 352b
350S-30* 0.0312 0.0781 33 151 238 295 288 399 472 114 154 181 340 433 494
350S-33 0.0346 0.0764 33 166 260 323 324 445 526 131 175 205 384 484 551
350S-43 0.0451 0.0712 33 278 428 528 571 768 900 240 315 365 680 842 949
350S-54 0.0566 0.0849 50 637 967 1186 1331 1761 2046 594 768 883 1645 2005 2245
350S-68 0.0713 0.1069 50 965 1441 1758 2047 2660 3068 970 1232 1406 2631 3159 3510
350S-97 0.1017 0.1525 50 1831 2666 2818a 3983 5041 4739a 2035 2520 2486a 5397 6339 6095a
362S-18* 0.0188 0.0843 33 54 88 97b 92 132 131b 31 43 45b 108 142 144b
362S-27* 0.0283 0.0796 33 123 196 214b 232 324 317b 88 120 124b 272 348 349b
362S-30* 0.0312 0.0781 33 150 236 294 287 398 471 112 151 177 337 429 490
362S-33 0.0346 0.0764 33 165 259 322 323 444 525 129 173 202 381 480 547
362S-43 0.0451 0.0712 33 277 427 526 570 767 898 236 311 360 675 836 943
362S-54 0.0566 0.0849 50 634 963 1182 1329 1758 2043 588 760 874 1635 1994 2232
362S-68 0.0713 0.1069 50 962 1437 1752 2044 2657 3064 961 1221 1393 2618 3143 3492
362S-97 0.1017 0.1525 50 1827 2659 3212 3978 5035 5738 2020 2501 2821 5374 6313 6936
400S-27* 0.0283 0.0796 33 122 193 211b 230 321 315b 83 113 117b 264 339 339b
400S-30* 0.0312 0.0781 33 148 233 290 285 395 468 106 143 168 329 418 477
400S-33 0.0346 0.0764 33 163 256 317 322 442 522 122 164 192 372 469 534
400S-43 0.0451 0.0712 33 274 422 520 567 763 893 227 299 346 662 819 924
400S-54 0.0566 0.0849 50 628 954 1170 1323 1750 2034 569 735 846 1607 1960 2194
400S-68 0.0713 0.1069 50 953 1424 1737 2036 2646 3051 936 1188 1356 2579 3096 3440
400S-97 0.1017 0.1525 50 1814 2640 3189 3965 5018 5718 1978 2448 2761 5309 6236 6852
550S-27* 0.0283 0.0796 33 115 183 199b 225 314 308b 64 88 90b 238 304 305b
550S-30* 0.0312 0.0781 33 140 221 275 279 386 458 84 114 134 298 378 432
550S-33 0.0346 0.0764 33 155 243 302 315 432 511 100 134 157 339 428 487
550S-43 0.0451 0.0712 33 262 405 499 556 749 877 195 256 297 614 760 858
550S-54 0.0566 0.0849 50 606 920 1128 1302 1722 2001 502 649 746 1508 1838 2058
550S-68 0.0713 0.1069 50 923 1380 1683 2007 2608 3007 844 1071 1223 2441 2931 3256
550S-97 0.1017 0.1525 50 1766 2571 3106 3917 4957 5648 1826 2261 2550 5078 5965 6555
600S-30* 0.0312 0.0781 33 138 218 271 277 384 454 78 105 123 288 367 419
600S-33 0.0346 0.0764 33 153 240 297 313 430 507 93 125 146 329 416 473
600S-43 0.0451 0.0712 33 259 400 493 553 745 872 185 243 282 600 743 838
600S-54 0.0566 0.0849 50 599 909 1116 1295 1713 1991 482 623 716 1478 1802 2017
600S-68 0.0713 0.1069 50 914 1366 1666 1998 2596 2994 816 1036 1183 2399 2881 3201
600S-97 0.1017 0.1525 50 1752 2551 3081 3902 4939 5628 1781 2205 2487 5010 5885 6466
600S-118 0.1242 0.1863 50 2528 3625 4354 5698 7108 8046 2734 3339 3741 7555 8772 9581
800S-43 0.0451 0.0712 33 247 381 470 542 730 854 150 197 228 548 678 765
800S-54 0.0566 0.0849 50 575 872 1070 1272 1682 1955 409 529 608 1370 1670 1869
800S-68 0.0713 0.1069 50 882 1318 1607 1966 2555 2946 716 910 1038 2250 2701 3001
800S-97 0.1017 0.1525 50 1702 2477 2992 3850 4873 5553 1618 2003 2259 4761 5593 6145
800S-118 0.1242 0.1863 50 2462 3531 4241 5629 7023 7949 2518 3075 3445 7223 8387 9160
1000S-54 0.0566 0.0849 50 553 840 1031 1251 1655 1923 346 447 514 1275 1554 1740
1000S-68 0.0713 0.1069 50 854 1275 1555 1938 2518 2904 629 799 912 2119 2544 2826
1000S-97 0.1017 0.1525 50 1657 2412 2914 3805 4815 5487 1476 1827 2060 4545 5338 5866
1000S-118 0.1242 0.1863 50 2405 3449 4143 5569 6948 7864 2330 2845 3187 4545 8051 8794
1000S-119 0.0713 0.1069 50 828 1237 1509 1913 2485 2866 551 699 798 4545 2402 2669
1000S-120 0.1017 0.1525 50 1618 2355 2844 3764 4764 5428 1348 1668 1882 4545 5109 5614
1000S-121 0.1242 0.1863 50 2354 3375 4054 5515 6881 7788 2161 2638 2956 4545 7750 8465
1000S-122 0.0713 0.1069 50 805 1202 1466 1889 2455 2831 479 608 694 4545 2272 2525
1000S-123 0.1017 0.1525 50 1581 2301 2780 3726 4716 5374 1230 1523 1718 4545 4900 5384
1000S-124 0.1242 0.1863 50 2307 3308 3973 5466 6819 7719 2006 2449 2744 4545 7474 8164
Allowable Web Crippling Loads (lbs) – Back-To-Back Members

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Allowable Web Crippling Loads (lbs) – Back-To-Back Members
Member Design Thickness
(in)		 Inside Radius
(in)		 Yield Strength
(ksi)		 Condition 1
Fastened to Support
Bearing Length (in)		 Condition 2
Fastened to Support
Bearing Length (in)		 Condition 3
Not Fastened to Support
Bearing Length (in)		 Condition 4
Not Fastened to Support
Bearing Length (in)
1 3.5 6 1 3.5 6 1 3.5 6 1 3.5 6
162S-18* 0.0188 0.0843 33 275 436a 542ab 347 421a 500ab 168 222a 258ab 339 448a 520ab
162S-27* 0.0283 0.0796 33 594 918a 1133ab 808 950a 1112ab 409 524a 600ab 857 1097a 1257ab
162S-30* 0.0312 0.0781 33 713 1094a 1348a 985 1150a 1342a 504 641a 732a 1063 1352a 1543a
162S-33* 0.0346 0.0764 33 865 1318a 1619a 1215 1407a 1636a 628 793a 902a 1334 1683a 1915a
162S-43* 0.0451 0.0712 33 1417 2119a 2585a 2074 2354a 2713a 1098 1359a 1533a 2369 2934a 3309a
162S-54* 0.0566 0.0849 50 3194 4698a 5698a 4805 5361a 6131a 2641 3220a 3604a 5712 6964a 7795a
162S-68* 0.0713 0.1069 50 4774 6901a 8315a 7366 8083a 9171a 4208 5053a 5614a 9101 10928a 12142a
250S-18* 0.0188 0.0843 33 274 435a 541ab 346 420a 499ab 144 190a 220ab 290 383a 445ab
250S-27* 0.0283 0.0796 33 593 916a 1131ab 806 948a 1110ab 365 468a 536ab 765 979a 1122ab
250S-30* 0.0312 0.0781 33 712 1092a 1345a 983 1148a 1339a 454 577a 658a 956 1216a 1388a
250S-33 0.0346 0.0764 33 777 1184a 1454a 1092 1264a 1470a 512 647a 736a 1088 1373a 1562a
250S-43 0.0451 0.0712 33 1273 1904a 2323a 1864 2116a 2438a 910 1127a 1271a 1964 2432a 2743a
250S-54 0.0566 0.0849 50 2871 4223a 5121a 4318 4819a 5510a 2213 2698a 3020a 4786 5835a 6532a
250S-68 0.0713 0.1069 50 4291 6203a 7474a 6621 7266a 8244a 3557 4271a 4745a 7692 9236a 10263a
350S-18* 0.0188 0.0843 33 274 434a 540ab 346 420a 497ab 121 160a 186ab 245 323a 375ab
350S-27* 0.0283 0.0796 33 592 914a 1129ab 805 947a 1108ab 325 416a 476ab 679 870a 997ab
350S-30* 0.0312 0.0781 33 711 1091a 1343a 982 1146a 1337a 407 517a 590a 857 1090a 1244a
350S-33 0.0346 0.0764 33 776 1182a 1452a 1090 1262a 1467a 463 585a 665a 984 1241a 1412a
350S-43 0.0451 0.0712 33 1272 1901a 2320a 1861 2113a 2434a 838 1037a 1170a 1808 2239a 2525a
350S-54 0.0566 0.0849 50 2867 4217a 5114a 4313 4812a 5503a 2062 2514a 2814a 4459 5436a 6085a
350S-68 0.0713 0.1069 50 4286 6196a 7466a 6614 7257a 8234a 3346 4018a 4464a 7236 8689a 9654a
350S-97 0.1017 0.1525 50 8003 11261a 13427a 12832 13736a 15402a 6986 8206a 9017a 15109 17747a 19501a
362S-18* 0.0188 0.0843 33 274 434a 540ab 345 419a 497ab 119 157a 182ab 239 316a 367ab
362S-27* 0.0283 0.0796 33 592 914a 1128ab 805 946a 1107ab 320 410a 469ab 670 858a 982ab
362S-30* 0.0312 0.0781 33 711 1090a 1343a 982 1146a 1337a 401 510a 583a 846 1075a 1228a
362S-33 0.0346 0.0764 33 776 1182a 1452a 1090 1262a 1467a 458 578a 657a 972 1226a 1395a
362S-43 0.0451 0.0712 33 1271 1901a 2319a 1861 2112a 2434a 830 1027a 1159a 1790 2217a 2501a
362S-54 0.0566 0.0849 50 2867 4217a 5113a 4312 4812a 5502a 2045 2493a 2790a 4422 5391a 6035a
362S-68 0.0713 0.1069 50 4285 6195a 7465a 6613 7256a 8233a 3322 3989a 4432a 7185 8627a 9585a
362S-97 0.1017 0.1525 50 8002 11260a 13425a 12831 13735a 15401a 6946 8159a 8965a 15022 17646a 19389a
400S-27* 0.0283 0.0796 33 592 914 1128ab 804 1081 1107ab 306 393 450ab 642 822 941ab
400S-30* 0.0312 0.0781 33 710 1090 1342a 981 1309 1336a 386 490 560a 813 1034 1181a
400S-33 0.0346 0.0764 33 776 1181 1451a 1089 1442 1466a 442 557 634a 937 1183 1346a
400S-43 0.0451 0.0712 33 1271 1900 2318a 1860 2413 2433a 806 998 1126a 1739 2154 2429a
400S-54 0.0566 0.0849 50 2866 4215 5111a 4310 5497 5500a 1995 2432 2723a 4315 5260 5889a
400S-68 0.0713 0.1069 50 4284 6193 7462a 6610 8290 8230a 3253 3906 4340a 7036 8448 9387a
400S-97 0.1017 0.1525 50 8000 11256a 13421a 12827 13730a 15396a 6830 8023a 8816a 14772 17352a 19067a
550S-27* 0.0283 0.0796 33 591 912 1125ab 802 1079 1104ab 259 331 379ab 541 693 794ab
550S-30* 0.0312 0.0781 33 709 1087 1339a 979 1306 1333a 331 420 480a 697 886 1012a
550S-33 0.0346 0.0764 33 774 1179 1448a 1087 1439 1464a 384 484 551a 815 1028 1170a
550S-43 0.0451 0.0712 33 1269 1897 2314a 1857 2409 2428a 721 893 1007a 1556 1927 2174a
550S-54 0.0566 0.0849 50 2861 4208 5104a 4304 5488 5491a 1818 2217 2482a 3933 4794 5367a
550S-68 0.0713 0.1069 50 4278 6185 7452a 6601 8278 8219a 3008 3612 4013a 6506 7812 8680a
550S-97 0.1017 0.1525 50 7990 11243 13405a 12812 15673 15378a 6421 7543 8288a 13888 16313 17925a
600S-30* 0.0312 0.0781 33 708 1087 1338a 978 1305 1332a 314 399 456a 662 842 961a
600S-33 0.0346 0.0764 33 774 1178 1447a 1086 1438 1463a 366 462 526a 778 982 1117a
600S-43 0.0451 0.0712 33 1268 1896 2313a 1856 2408 2427a 696 862 972a 1501 1859 2097a
600S-54 0.0566 0.0849 50 2860 4207 5101a 4302 5486 5489a 1765 2152 2409a 3818 4654 5210a
600S-68 0.0713 0.1069 50 4276 6182 7449a 6599 8275 8215a 2935 3524 3915a 6347 7621 8467a
600S-97 0.1017 0.1525 50 7988 11240 13401a 12808 15668 15373a 6299 7399 8130a 13623 16002 17583a
600S-118 0.1242 0.1863 50 11392 15784 18703a 18650 22513 21946a 9616 11165 12195a 20797 24147 26374a
800S-43 0.0451 0.0712 33 1266 1892 2309 1853 2403 2769 603 747 843 1302 1613 1819
800S-54 0.0566 0.0849 50 2855 4200 5093 4295 5477 6263 1573 1918 2147 3402 4148 4643
800S-68 0.0713 0.1069 50 4270 6173 7438 6589 8263 9375 2669 3205 3561 5772 6931 7701
800S-97 0.1017 0.1525 50 7978 11226 13384 12792 15649 17547 5859 6882 7562 12671 14883 16354
800S-118 0.1242 0.1863 50 11379 15766 18682 18629 22488 25052 9028 10482 11449 19524 22670 24760
1000S-54 0.0566 0.0849 50 2851 4194 5086 4288 5469 6254 1405 1713 1917 3038 3704 4146
1000S-68 0.0713 0.1069 50 4264 6165 7428 6580 8252 9363 2437 2926 3251 5270 6327 7030
1000S-97 0.1017 0.1525 50 7969 11213 13369 12778 15631 17528 5474 6430 7065 11839 13906 15280
1000S-118 0.1242 0.1863 50 11368 15751 18663 18610 22466 25027 8515 9887 10798 18416 21383 23354
1200S-68 0.0713 0.1069 50 4259 6158 7419 6573 8243 9352 2227 2674 2971 4817 5784 6426
1200S-97 0.1017 0.1525 50 7961 11202 13356 12765 15616 17511 5128 6024 6619 11091 13027 14315
1200S-118 0.1242 0.1863 50 11358 15737 18647 18594 22446 25005 8055 9352 10215 17420 20227 22091
1400S-68 0.0713 0.1069 50 4255 6151 7411 6566 8234 9342 2035 2444 2715 4401 5285 5872
1400S-97 0.1017 0.1525 50 7954 11192 13344 12754 15602 17495 4811 5651 6210 10405 12223 13430
1400S-118 0.1242 0.1863 50 11348 15724 18631 18579 22427 24985 7633 8863 9680 16509 19168 20936