BAR GRATING STANDARD-DUTY WELDED

GW & GW-2 SERIES | 19-W-4 & 19-W-2 (1-3/16" ON CENTER) SPACING | RECTANGULAR BAR CARBON & GALVANIZED STEEL LOAD TABLE

SERIES TYPE BB BB PED LBS./SF LOAD/ CLEAR SPAN

& NAME HGT THK MAX 19-W-4 19-W-2 DEFL 12" 18" 24" 30" 36" 42" 48" 54" 60" 66" 72" 78" 84" 90" 96" 102" 108" 114" 120"
U 1421 631 355 227 158 116 89 70 57 47 39 34 29 25 22 20 18 16 14
GW-75-A & D 0.025 0.056 0.099 0.155 0.224 0.304 0.398 0.502 0.623 0.752 0.883 1.061 1.217 1.382 1.575 1.824 2.064 2.277 2.446
3/4" 1/8" 42" 4.1 5.0
GW-75-A-2 C 710 474 355 284 237 203 178 158 142 129 118 109 101 95 89 84 79 75 71
D 0.020 0.045 0.079 0.124 0.179 0.243 0.319 0.403 0.496 0.600 0.713 0.837 0.969 1.121 1.274 1.442 1.610 1.798 1.985
U 2131 947 533 341 237 174 133 105 85 70 59 50 43 38 33 29 26 24 21
GW-75 & D 0.025 0.056 0.099 0.155 0.224 0.304 0.397 0.502 0.619 0.746 0.891 1.040 1.203 1.401 1.575 1.764 1.987 2.277 2.446
3/4" 3/16" 46" 5.8 6.7
GW-75-2 C 1066 710 533 426 355 304 266 237 213 194 178 164 152 142 133 125 118 112 107
D 0.020 0.045 0.079 0.124 0.179 0.243 0.317 0.403 0.496 0.602 0.717 0.839 0.972 1.117 1.269 1.431 1.603 1.790 1.994
U 2526 1123 632 404 281 206 158 125 101 84 70 60 52 45 39 35 31 28 25
GW-100-A & D 0.019 0.042 0.075 0.116 0.168 0.228 0.298 0.378 0.465 0.566 0.668 0.789 0.920 1.049 1.177 1.346 1.499 1.680 1.842
1" 1/8" 52" 5.2 6.1
GW-100-A-2 C 1263 842 632 505 421 361 316 281 253 230 211 194 180 168 158 149 140 133 126
D 0.015 0.034 0.060 0.093 0.134 0.182 0.238 0.302 0.373 0.451 0.537 0.628 0.728 0.836 0.954 1.079 1.203 1.344 1.485
U 3790 1684 947 606 421 309 237 187 152 125 105 90 77 67 59 52 47 42 38
GW-100 & D 0.019 0.042 0.074 0.116 0.168 0.228 0.298 0.377 0.467 0.562 0.669 0.789 0.908 1.042 1.187 1.334 1.515 1.681 1.867
1" 3/16" 57" 7.5 8.4
GW-100-2 C 1895 1263 947 758 632 541 474 421 379 345 316 292 271 253 237 223 211 199 189
D 0.015 0.034 0.060 0.093 0.134 0.182 0.238 0.302 0.372 0.451 0.537 0.630 0.731 0.839 0.954 1.077 1.209 1.341 1.486
U 3947 1754 987 631 439 322 247 195 158 130 110 93 81 70 62 55 49 44 39
GW-125-A & D 0.015 0.034 0.060 0.093 0.134 0.182 0.239 0.302 0.373 0.449 0.538 0.626 0.734 0.836 0.958 1.083 1.213 1.352 1.472
1-1/4" 1/8" 61" 6.3 7.2
GW-125-A-2 C 1973 1316 987 789 658 564 493 439 395 359 329 304 282 263 247 232 219 208 197
D 0.012 0.027 0.048 0.074 0.107 0.146 0.191 0.242 0.298 0.361 0.429 0.504 0.584 0.670 0.764 0.860 0.964 1.077 1.189
U 5921 2631 1480 947 658 483 370 292 237 196 164 140 121 105 93 82 73 66 59
GW-125 & D 0.015 0.034 0.060 0.093 0.134 0.182 0.238 0.301 0.373 0.451 0.535 0.629 0.731 0.836 0.958 1.077 1.205 1.352 1.484
1-1/4" 3/16" 67" 9.1 10.0
GW-125-2 C 2960 1974 1480 1184 987 846 740 658 592 538 493 455 423 395 370 348 329 312 296
D 0.012 0.027 0.048 0.074 0.107 0.146 0.191 0.241 0.298 0.360 0.429 0.503 0.584 0.671 0.763 0.860 0.965 1.077 1.191
U 5684 2526 1421 910 632 464 355 281 227 188 158 135 116 101 89 79 70 63 57
GW-150-A & D 0.012 0.028 0.050 0.078 0.112 0.152 0.198 0.252 0.310 0.376 0.447 0.526 0.608 0.698 0.796 0.901 1.003 1.121 1.245
1-1/2" 1/8" 70" 7.4 8.3
GW-150-A-2 C 2842 1895 1421 1137 947 812 711 632 568 517 474 437 406 379 355 334 316 299 284
D 0.010 0.022 0.040 0.062 0.089 0.122 0.159 0.201 0.248 0.301 0.358 0.419 0.487 0.559 0.635 0.717 0.805 0.896 0.992
U 8526 3789 2132 1364 947 696 533 421 341 282 237 202 174 152 133 118 105 94 85
GW-150 & D 0.012 0.028 0.050 0.078 0.112 0.152 0.199 0.251 0.310 0.376 0.447 0.525 0.608 0.700 0.793 0.897 1.003 1.115 1.238
1-1/2" 3/16" 77" 10.8 11.7
GW-150-2 C 4263 2842 2132 1705 1421 1218 1066 947 853 775 711 656 609 568 533 502 474 449 426
D 0.010 0.022 0.040 0.062 0.089 0.122 0.159 0.201 0.248 0.300 0.358 0.420 0.487 0.558 0.636 0.718 0.805 0.897 0.992
U 11605 5158 2901 1857 1289 947 725 573 464 384 322 275 237 206 181 161 143 129 116
GW-175 & D 0.011 0.024 0.043 0.067 0.096 0.130 0.170 0.215 0.266 0.322 0.383 0.450 0.522 0.598 0.680 0.771 0.860 0.963 1.064
1-3/4" 3/16" 87" 12.5 13.4
GW-175-2 C 5803 3868 2901 2321 1934 1658 1451 1289 1161 1055 967 893 829 774 725 683 645 611 580
D 0.009 0.019 0.034 0.053 0.077 0.104 0.136 0.172 0.213 0.257 0.306 0.360 0.417 0.479 0.545 0.615 0.690 0.768 0.851
U 15158 6737 3790 2425 1684 1237 947 749 606 501 421 359 309 269 237 210 187 168 152
GW-200 & D 0.009 0.021 0.037 0.058 0.084 0.114 0.149 0.189 0.233 0.282 0.335 0.394 0.456 0.523 0.596 0.673 0.754 0.840 0.934
2" 3/16" 96" 14.1 15.0
GW-200-2 C 7579 5053 3790 3032 2526 2165 1895 1684 1516 1378 1263 1166 1083 1011 947 892 842 798 758
D 0.007 0.017 0.030 0.047 0.067 0.091 0.119 0.151 0.186 0.225 0.268 0.315 0.365 0.419 0.476 0.538 0.603 0.672 0.745
U 19184 8526 4796 3070 2132 1566 1199 947 767 634 533 454 392 341 300 266 237 213 192
GW-225 & D 0.008 0.019 0.033 0.052 0.074 0.101 0.132 0.168 0.207 0.250 0.298 0.350 0.406 0.465 0.530 0.599 0.671 0.748 0.828
2-1/4" 3/16" 105" 15.8 16.7
GW-225-2 C 9592 6395 4796 3837 3197 2741 2398 2132 1918 1744 1599 1476 1370 1279 1199 1128 1066 1010 959
D 0.007 0.015 0.026 0.041 0.060 0.081 0.106 0.134 0.165 0.200 0.238 0.280 0.324 0.372 0.424 0.478 0.536 0.598 0.662
U 23684 10526 5921 3790 2632 1933 1480 1170 947 783 658 561 483 421 370 328 292 262 237
GW-250 & D 0.007 0.017 0.030 0.047 0.067 0.091 0.119 0.151 0.186 0.225 0.268 0.315 0.365 0.419 0.477 0.538 0.602 0.671 0.745
2-1/2" 3/16" 113" 17.4 18.3
GW-250-2 C 11842 7895 5921 4737 3947 3383 2961 2632 2368 2153 1974 1822 1692 1579 1480 1393 1316 1247 1184
D 0.006 0.013 0.024 0.037 0.054 0.073 0.095 0.121 0.149 0.180 0.215 0.252 0.292 0.335 0.381 0.430 0.483 0.538 0.596

U - Uniform Load - Lbs./Sf. D - Deflection in Inches C - Concentrated Load - Lbs./Ft. of Width at Mid Span | Loading information based on 10.1053 bearing bars per foot of Grating width. Loading and deflection values are theoretical and based on a maximum allowable Fiber stress (Fs) of 18,000 PSI. Elastic
Modulus (E) is 29,000,000 PSI. Spans listed in table are clear (inside structural supports). Span and loading values to the left of the bolded black line produce a deflection of 1/4" or less under a uniform load of 100 Lbs./Sf., allowing for safe pedestrian comfort. The resulting pedestrian maximum spans under this
condition are listed in the PED MAX column. Span and loading values to the right of the bolded black line are applicable to other types of loads at the discretion of a licensed engineer. For Grating with a serrated surface (1" bearing bar height or taller and 3/16" thick), subtract 1/4" from the bearing bar height
requirement and reference that loading information listed in the table. For example, a 1-1/2" x 3/16" serrated bearing bar height and thickness would have the same strength and loading values as a 1-1/4" x 3/16" smooth (non-serrated) bearing bar height and thickness. Technical information provided is
theoretical and for evaluation by technically skilled persons, with any use thereof to be at their independent discretion and risk. McNICHOLS shall have no responsibility or liability for results obtained or damages resulting from improper evaluation or use of Bar Grating.

sales@mcnichols.com | 800.237.3820 Page 1 of 1