Untitled Document

Bearing Bar Size [Nominal Wt. (psf)**]	Recomm. Max. Clear Span (in.) for 1/4" Deflection Under Uniform Load of 100psf.	Load Deflection	Span (Inches)
Bearing Bar Size [Nominal Wt. (psf)**]		Load Deflection	24"	30"	36"	42"	48"	54"	60"	66"	72"	78"	84"	96"	108"
Legend: U = Safe Uniform Load (lbs./ft.²); C= Safe Concentrated Load (lbs./foot of grating width); D = Deflection (inches).
For serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
Notes: The carrying capacity of a piece of grating subjected to a concentrated load over only a portion of its width is determined by the stiffness of both the bearing bars and the cross bars, and therefore differs with the type of grating used. To determine the carrying capacity of gratings subject to such loadings, the manufacturer's engineering department should be consulted. 1/4" is considered the maximum deflection consisent with pedestrian comfort, but can be exceeded for other loading conditions at the discretion of the engineer.
F=20,000 psi, E=28,000,000 psi (For Alloys 304L and 316L, F=16,500 psi and tabular values for U, C, and D shall be multiplied by 0.825) All loads and deflections shown are based on engineering computations using gross sections and nominal sizes of bearing bars. The values listed are for design selection only and are not intended to be "absolute" since actual load capacity will be affected slightly by variations which can beexpected due to material and manufacturing tolerances.
Conversion Factors:For gratings with other than 1-3/16" bearing bar spacing, or for different design stresses, proportionate conversion factors apply. Refer to the Metal Bar Grating Engineering Design Manual for the development of such factors.
**Weights (mass/area) shown are approximate and vary with manufacturers. They are provided for preliminary design computations only and are not intended for any other purpose.
3/4" x 1/8" [3.9lbs]	41"	U D C D	395 0.114 395 0.091	253 0.179 316 0.143	175 0.257 263 0.206	129 0.350 226 0.280	99 0.457 197 0.366	78 0.579 175 0.463
3/4" x 3/16" [5.6lbs]	45"	U D C D	592 0.114 592 0.091	379 0.179 474 0.143	263 0.257 395 0.206	193 0.350 338 0.280	148 0.457 296 0.366	117 0.579 263 0.463	95 0.714 237 0.571
1" x 1/8" [5lbs]	51"	U D C D	702 0.086 702 0.069	449 0.134 561 0.107	312 0.193 468 0.154	229 0.263 401 0.210	175 0.343 351 0.274	139 0.434 312 0.347	112 0.536 281 0.429	93 0.648 255 0.519
1" x 3/16" [7.2lbs]	56"	U D C D	1053 0.086 1053 0.069	674 0.134 842 0.107	468 0.193 702 0.154	344 0.263 602 0.210	263 0.343 526 0.274	208 0.434 468 0.347	168 0.536 421 0.429	139 0.648 383 0.519	117 0.771 351 0.617
1 1/4" x 1/8" [6.1lbs]	60"	U D C D	1097 0.069 1097 0.055	702 0.107 877 0.086	487 0.154 731 0.123	358 0.210 627 0.168	274 0.274 548 0.219	217 0.347 487 0.278	175 0.429 439 0.343	145 0.519 399 0.415	122 0.617 366 0.494	104 0.724 337 0.579
1 1/4" x 3/16" [8.9lbs]	66"	U D C D	1645 0.069 1645 0.055	1053 0.107 1316 0.086	731 0.154 1097 0.123	537 0.210 940 0.168	411 0.274 822 0.219	325 0.347 731 0.278	263 0.429 658 0.343	218 0.519 598 0.415	183 0.617 548 0.494	156 0.724 506 0.579	134 0.840 470 0.672
1 1/2" x 1/8" [7.2lbs]	69"	U D C D	1579 0.057 1579 0.046	1011 0.089 1263 0.071	702 0.129 1053 0.103	516 0.175 902 0.140	395 0.229 789 0.183	312 0.289 702 0.231	253 0.357 632 0.286	209 0.432 574 0.346	175 0.514 526 0.411	150 0.604 486 0.483	129 0.700 451 0.560
1 1/2" x 3/16" [10.7lbs]	76"	U D C D	2368 0.057 2368 0.046	1516 0.089 1895 0.071	1053 0.129 1579 0.103	773 0.175 1353 0.140	592 0.229 1184 0.183	468 0.289 1053 0.231	379 0.357 947 0.286	313 0.432 861 0.346	263 0.514 790 0.411	224 0.604 729 0.483	193 0.700 677 0.560	148 0.914 592 0.731
1 3/4" x 1/8" [8.5lbs]	77"	U D C D	2149 0.049 2149 0.039	1375 0.077 1719 0.061	955 0.110 1433 0.088	702 0.150 1228 0.120	537 0.196 1075 0.157	425 0.248 955 0.198	344 0.306 860 0.245	284 0.370 782 0.296	239 0.441 716 0.353	204 0.517 661 0.414	175 0.600 614 0.480	134 0.784 537 0.627	106 0.992 478 0.793
1 3/4" x 3/16" [12.3lbs]	86"	U D C D	3224 0.049 3224 0.039	2063 0.077 2579 0.061	1433 0.110 2149 0.088	1053 0.150 1842 0.120	806 0.196 1612 0.157	637 0.248 1433 0.198	516 0.306 1290 0.245	426 0.370 1172 0.296	358 0.441 1075 0.353	305 0.517 992 0.414	263 0.600 921 0.480	229 0.784 806 0.627	159 0.992 716 0.793
2" x 1/8" [9.6lbs]	85"	U D C D	2807 0.043 2807 0.034	1797 0.067 2246 0.054	1248 0.096 1871 0.077	917 0.131 1604 0.105	702 0.171 1404 0.137	555 0.217 1248 0.174	449 0.268 1123 0.214	371 0.324 1021 0.259	312 0.386 936 0.309	266 0.453 864 0.362	229 0.525 802 0.420	175 0.686 702 0.549	139 0.868 624 0.694
2" x 3/16" [13.9lbs]	95"	U D C D	4211 0.043 4211 0.034	2695 0.067 3368 0.054	1871 0.096 2807 0.077	1375 0.131 2406 0.105	1053 0.171 2105 0.137	832 0.217 1871 0.174	674 0.268 1684 0.214	557 0.324 1531 0.259	468 0.386 1404 0.309	399 0.453 1296 0.362	344 0.525 1203 0.420	263 0.686 1053 0.549	208 0.868 936 0.694
2 1/4" x 3/16" [15.6lbs]	104"	U D C D	5329 0.038 5329 0.030	3411 0.060 4263 0.048	2368 0.086 3553 0.069	1740 0.117 3045 0.093	1332 0.152 2665 0.122	1053 0.193 2368 0.154	853 0.238 2132 0.190	705 0.288 1938 0.230	592 0.343 1776 0.274	505 0.402 1640 0.322	435 0.467 1523 0.373	333 0.610 1332 0.488	263 0.771 1184 0.617
2 1/2" x 3/16" [17.2lbs]	112"	U D C D	6579 0.034 6579 0.027	4211 0.054 5263 0.043	2924 0.077 4386 0.062	2148 0.105 3759 0.084	1645 0.137 3290 0.110	1300 0.174 2924 0.139	1053 0.214 2632 0.171	870 0.259 2392 0.207	731 0.309 2193 0.247	623 0.362 2024 0.290	537 0.420 1880 0.336	411 0.549 1645 0.439	325 0.694 1462 0.555

Bar Size	Nominal Weight (psf)**	Recommended Max. Span (in.) for 1/4" Deflection Under Uniform Load of 100psf.
For serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
Notes: The carrying capacity of a piece of grating subjected to a concentrated load over only a portion of its width is determined by the stiffness of both the bearing bars and the cross bars, and therefore differs with the type of grating used. To determine the carrying capacity of gratings subject to such loadings, the manufacturer's engineering department should be consulted. 1/4" is considered the maximum deflection consisent with pedestrian comfort, but can be exceeded for other loading conditions at the discretion of the engineer.
F=20,000 psi, E=28,000,000 psi (For Alloys 304L and 316L, F=16,500 psi and tabular values for U, C, and D shall be multiplied by 0.825) All loads and deflections shown are based on engineering computations using gross sections and nominal sizes of bearing bars. The values listed are for design selection only and are not intended to be "absolute" since actual load capacity will be affected slightly by variations which can beexpected due to material and manufacturing tolerances.
**Weights (mass/area) shown are approximate and vary with manufacturers. They are provided for preliminary design computations only and are not intended for any other purpose.
3/4" x 1/8"	3.9 lbs.	41"
3/4" x 3/16"	5.6 lbs.	45"
1" x 1/8"	5 lbs.	51"
1" x 3/16"	7.2 lbs.	56"
1 1/4" x 1/8"	6.1 lbs.	60"
1 1/4" x 3/16"	8.9 lbs.	66"
1 1/2" x 1/8"	7.2 lbs.	69"
1 1/2" x 3/16"	10.7 lbs.	76"
1 3/4" x 1/8"	8.5 lbs.	77"
1 3/4" x 3/16"	12.3 lbs.	86"
2" x 1/8"	9.6 lbs.	85"
2" x 3/16"	13.9 lbs.	95"
2 1/4" x 3/16"	15.6 lbs.	104"
2 1/2" x 3/16"	17.2 lbs.	112"

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

19-W - Panel Sizes

Number of Bars	Bar Size
Number of Bars	1/8"	3/16"
2	1 5/16"	1 3/8"
3	2 1/2"	2 9/16"
4	3 11/16"	3 3/4"
5	4 7/8"	4 15/16"
6	6 1/16"	6 1/8"
7	7 1/4"	7 5/16"
8	8 7/16"	8 1/2"
9	9 5/8"	9 11/16"
10	10 13/16"	10 7/8"
11	12"	12 1/16"
12	13 13/16"	13 1/4"
13	14 3/8"	14 7/16"
14	15 9/16"	15 5/8"
15	16 3/4"	16 13/16"
16	17 15/16"	18"
17	19 1/8"	19 3/16"
18	20 5/16"	20 3/8"
19	21 1/2"	21 9/16"
20	22 11/16"	22 3/4"
21	23 7/8"	23 15/16"
22	25 1/16"	25 1/8"
23	26 1/4"	26 5/16"
24	27 7/16"	27 1/2"
25	28 5/8"	28 11/16"
26	29 13/16"	29 7/8"
27	31"	31 1/16"
28	32 3/16"	32 1/4"
29	33 3/8"	33 7/16"
30	34 9/16"	34 5/8"
31	35 3/4"	35 13/16"

Cross Rod Spacing

The image on the left should show the spacing between the bearing bars ( 1 3/16" ) and the spacing between crossrods ( 2" and 4" ). The paragraph should have some text that will summerize the image as well as give material ( stainless steel, carbon steel, aluminum, etc. ). There also needs to something that states the stock grating type, size, etc. As well as the stock panels width ( nominal ) and length.

Bearing Bar Size [Weight (psf)*]	Maximum Pedestrian Span**	Load Deflection	Unsupported Span (Inches)
Bearing Bar Size [Weight (psf)*]	Maximum Pedestrian Span**	Load Deflection	24"	30"	36"	42"	48"	54"	60"	66"	72"	78"	84"	96"	108"
Legend: U = Safe Uniform Load (lbs./ft.²); = Safe Concentrated Load (lbs./foot of grating width); D = Deflection (inches).
For Serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
Notes: All loads and deflections are theoretical and based upon the gross sections of the bearing bars, using a fiber stress of 18,000 psi. The values are not intended to be absolute since the actual load capacity will be affected by the slight variations in mill and manufacturing tolerances.
*Weight per square foot based upon 15-W-4 grating. Add .60 psf for 2" on center cross rods.
**Maximum pedestrian load is defined as a 100lb uniform load with ≤ 1/4". The 1/4" maximum deflection criteria is considered consistent with pedestrian comfort, but may be exceeded for other loading conditions at the discretion of the specifying authority.
3/4" x 3/16" [6.9lbs]	48"	U D C D	675 0.099 675 0.079	432 0.155 540 0.124	300 0.223 450 0.179	220 0.304 386 0.243	169 0.397 338 0.318	133 0.503 300 0.402	108 0.624 270 0.497
1" x 1/8" [6.2lbs]	54"	U D C D	800 0.074 800 0.060	512 0.116 640 0.093	356 0.168 533 0.134	261 0.228 457 0.182	200 0.298 400 0.238	158 0.377 356 0.302	128 0.466 320 0.372
1" x 3/16" [8.9lbs]	60"	U D C D	1200 0.074 1200 0.060	768 0.116 960 0.093	533 0.168 800 0.134	392 0.228 686 0.182	300 0.298 600 0.238	237 0.377 533 0.302	192 0.466 480 0.372	159 0.563 436 0.451	133 0.670 400 0.536
1 1/4" x 1/8" [7.5lbs]	64"	U D C D	1250 0.060 1250 0.048	800 0.093 1000 0.074	556 0.134 833 0.107	408 0.182 714 0.146	313 0.238 625 0.191	247 0.302 556 0.241	200 0.372 500 0.298	165 0.451 455 0.360	139 0.536 417 0.429	118 0.629 385 0.504
1 1/4" x 3/16" [11lbs]	71"	U D C D	1875 0.060 1875 0.048	1200 0.093 1500 0.074	833 0.134 1250 0.107	612 0.182 1071 0.146	469 0.238 938 0.191	370 0.302 833 0.241	300 0.372 750 0.298	248 0.451 682 0.360	208 0.536 625 0.429	178 0.629 577 0.504	153 0.730 536 0.584
1 1/2" x 1/8" [8.9lbs]	74"	U D C D	1800 0.050 1800 0.040	1152 0.078 1440 0.062	800 0.112 1200 0.089	588 0.152 1029 0.122	450 0.199 900 0.159	356 0.251 800 0.201	288 0.310 720 0.248	238 0.376 655 0.300	200 0.447 600 0.358	170 0.524 554 0.420	147 0.608 514 0.487	113 0.794 450 0.636
1 1/2" x 3/16" [13.2lbs]	82"	U D C D	2700 0.050 2700 0.040	1728 0.078 2160 0.062	1200 0.112 1800 0.089	882 0.152 1543 0.122	675 0.199 1350 0.159	533 0.251 1200 0.201	432 0.310 1080 0.248	357 0.376 982 0.300	300 0.447 900 0.358	256 0.524 831 0.420	220 0.608 771 0.487	169 0.794 675 0.636	133 1.006 600 0.804
1 3/4" x 1/8" [10.4lbs]	83"	U D C D	2450 0.043 2450 0.034	1560 0.067 1960 0.053	1089 0.096 1633 0.077	800 0.130 1400 0.104	613 0.170 1225 0.136	484 0.215 1089 0.172	392 0.266 980 0.213	324 0.322 891 0.257	272 0.383 817 0.306	232 0.450 754 0.360	200 0.521 700 0.417	153 0.681 613 0.545	121 0.862 544 0.689
1 3/4" x 3/16" [15.3lbs]	92"	U D C D	3675 0.043 3675 0.034	2352 0.067 2940 0.053	1633 0.096 2450 0.077	1200 0.130 2100 0.104	919 0.170 1838 0.136	726 0.215 1633 0.172	588 0.266 1470 0.213	486 0.322 1336 0.257	408 0.383 1225 0.306	348 0.450 1131 0.360	300 0.521 1050 0.417	230 0.681 919 0.545	182 0.862 817 0.689
2" x 1/8" [11.8lbs]	91"	U D C D	3200 0.037 3200 0.030	2048 0.058 2560 0.047	1422 0.084 2133 0.067	1045 0.114 1829 0.091	800 0.149 1600 0.119	632 0.189 1422 0.151	512 0.233 1280 0.186	423 0.282 1164 0.225	356 0.335 1067 0.268	303 0.393 985 0.315	261 0.456 914 0.365	200 0.596 800 0.477	158 0.754 711 0.603
2" x 3/16" [17.3lbs]	102"	U D C D	4800 0.037 4800 0.030	3072 0.058 3840 0.047	2133 0.084 3200 0.067	1567 0.114 2743 0.091	1200 0.149 2400 0.119	948 0.189 2133 0.151	768 0.233 1920 0.186	635 0.282 1746 0.225	533 0.335 1600 0.268	454 0.393 1477 0.315	392 0.456 1371 0.365	300 0.596 1200 0.477	237 0.754 1067 0.603
2 1/4" x 3/16" [19.4lbs]	111"	U D C D	6075 0.033 6075 0.026	3888 0.052 4850 0.041	2700 0.074 4050 0.060	1984 0.101 3471 0.081	1519 0.132 3038 0.106	1200 0.168 2700 0.134	972 0.207 2430 0.166	803 0.250 2209 0.200	675 0.298 2025 0.238	575 0.350 1869 0.280	496 0.406 1736 0.324	380 0.530 1519 0.424	300 0.670 1350 0.536
2 1/2" x 3/16" [21.5lbs]	120"	U D C D	7500 0.030 7500 0.024	4800 0.047 6000 0.037	3333 0.067 5000 0.054	2449 0.091 4286 0.073	1875 0.119 3750 0.095	1482 0.151 3333 0.121	1200 0.186 3000 0.149	992 0.225 2727 0.180	833 0.268 2500 0.215	710 0.315 2308 0.252	612 0.365 2143 0.292	469 0.477 1875 0.381	370 0.603 1667 0.483

Bearing Bar Size	Nominal Weight (psf)*	Maximum Pedestrian Span**
For Serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
*Weight per square foot based upon 15-W-4 grating. Add .60 psf for 2" on center cross rods.
**Maximum pedestrian load is defined as a 100lb uniform load with ≤ 1/4". The 1/4" maximum deflection criteria is considered consistent with pedestrian comfort, but may be exceeded for other loading conditions at the discretion of the specifying authority.
3/4" x 3/16"	6.9 lbs.	48"
1" x 1/8"	6.2 lbs.	54"
1" x 3/16"	8.9 lbs.	60"
1 1/4" x 1/8"	7.5 lbs.	64"
1 1/4" x 3/16"	11 lbs.	71"
1 1/2" x 1/8"	8.9 lbs.	74"
1 1/2" x 3/16"	13.2 lbs.	82"
1 3/4" x 1/8"	10.4 lbs.	83"
1 3/4" x 3/16"	15.3 lbs.	92"
2" x 1/8"	11.8 lbs.	91"
2" x 3/16"	17.3 lbs.	102"
2 1/4" x 3/16"	19.4 lbs.	111"
2 1/2" x 3/16"	21.5 lbs.	120"

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

15-W - Panel Sizes

Number of Bars	Bar Size
Number of Bars	1/8"	3/16"
2	1 1/16"	1 1/8"
3	2"	2 1/16"
4	2 15/16"	3"
5	3 7/8"	3 15/16"
6	4 13/16"	4 7/8"
7	5 3/4"	5 13/16"
8	6 11/16"	6 3/4"
9	7 5/8"	7 11/16"
10	8 9/16"	8 5/8"
11	9 1/2"	9 9/16"
12	10 7/16"	10 1/2"
13	11 3/8"	11 7/16"
14	12 5/16"	12 3/8"
15	13 1/4"	13 5/16"
16	14 3/16"	14 1/4"
17	15 1/8"	15 3/16"
18	16 1/16"	16 1/8"
19	17"	17 1/16"
20	17 15/16"	18"
21	18 7/8"	18 15/16"
22	19 13/16"	19 7/8"
23	20 3/4"	20 13/16"
24	21 11/16"	21 3/4"
25	22 5/8"	22 11/16"
26	23 9/16"	23 5/8"
27	24 1/2"	24 9/16"
28	25 7/16"	25 1/2"
29	26 3/8"	26 7/16"
30	27 5/16"	27 3/8"
31	28 1/4"	28 5/16"
32	29 3/16"	29 1/4"
33	30 1/8"	30 3/16"
34	31 1/16"	31 1/8"
35	32"	32 1/16"
36	32 1/16"	33"
37	33 7/8"	33 15/16"
38	34 13/16"	34 7/8"
39	35 3/4"	35 13/16"

Cross Rod Spacing

Bearing Bar Size [Weight (psf)*]	Maximum Pedestrian Span**	Load Deflection	Unsupported Span (Inches)
Bearing Bar Size [Weight (psf)*]	Maximum Pedestrian Span**	Load Deflection	24"	30"	36"	42"	48"	54"	60"	66"	72"	78"	84"	96"	108"
Legend: U = Safe Uniform Load (lbs./ft.²); = Safe Concentrated Load (lbs./foot of grating width); D = Deflection (inches).
For Serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
Notes: All loads and deflections are theoretical and based upon the gross sections of the bearing bars, using a fiber stress of 18,000 psi. The values are not intended to be absolute since the actual load capacity will be affected by the slight variations in mill and manufacturing tolerances.
*Weight per square foot based upon 11-W-4 grating. Add .60 psf for 2" on center cross rods.
**Maximum pedestrian load is defined as a 100lb uniform load with ≤ 1/4". The 1/4" maximum deflection criteria is considered consistent with pedestrian comfort, but may be exceeded for other loading conditions at the discretion of the specifying authority.
3/4" x 3/16" [9.1lbs]	52"	U D C D	1023 0.114 1023 0.091	655 0.179 818 0.143	455 0.257 682 0.206	334 0.350 584 0.280	256 0.457 511 0.366	202 0.579 455 0.463	164 0.714 409 0.571
1" x 1/8" [8.1lbs]	58"	U D C D	1212 0.086 1212 0.069	776 0.134 970 0.107	539 0.193 808 0.154	396 0.263 693 0.210	303 0.343 606 0.274	239 0.434 539 0.347	194 0.536 485 0.429	160 0.648 441 0.519
1" x 3/16" [11.9lbs]	64"	U D C D	1818 0.086 1818 0.069	1164 0.134 1455 0.107	808 0.193 1212 0.154	594 0.263 1039 0.210	455 0.343 909 0.274	359 0.434 808 0.347	291 0.536 727 0.429	240 0.648 661 0.519	202 0.771 606 0.617
1 1/4" x 1/8" [10lbs]	69"	U D C D	1894 0.069 1894 0.055	1212 0.107 1515 0.086	842 0.154 1263 0.123	618 0.210 1082 0.168	474 0.274 947 0.219	374 0.347 842 0.278	303 0.429 758 0.343	250 0.519 689 0.415	210 0.617 631 0.494	179 0.724 583 0.579
1 1/4" x 3/16" [14.7lbs]	76"	U D C D	2841 0.069 2841 0.055	1818 0.107 2273 0.086	1263 0.154 1894 0.123	928 0.210 1623 0.168	710 0.274 1421 0.219	561 0.347 1263 0.278	455 0.429 1136 0.343	376 0.519 1033 0.415	316 0.617 947 0.494	269 0.724 874 0.579	232 0.840 812 0.672
1 1/2" x 1/8" [11.9lbs]	79"	U D C D	2727 0.057 2727 0.046	1746 0.089 2182 0.071	1212 0.129 1818 0.103	891 0.175 1558 0.140	682 0.229 1364 0.183	539 0.289 1212 0.231	436 0.357 1091 0.286	361 0.432 992 0.346	303 0.514 909 0.411	258 0.604 839 0.483	223 0.700 779 0.560	171 0.914 682 0.731
1 1/2" x 3/16" [17.7lbs]	87"	U D C D	4091 0.057 4091 0.046	2618 0.089 3273 0.071	1818 0.129 2727 0.103	1336 0.175 2338 0.140	1023 0.229 2046 0.183	808 0.289 1818 0.231	655 0.357 1636 0.286	541 0.432 1488 0.346	455 0.514 1364 0.411	387 0.604 1259 0.483	334 0.700 1169 0.560	256 0.914 1023 0.731	202 1.157 909 0.926
1 3/4" x 1/8" [13.9lbs]	89"	U D C D	3712 0.049 3712 0.039	2376 0.077 2970 0.061	1650 0.110 2475 0.088	1212 0.150 2121 0.120	928 0.196 1856 0.157	733 0.248 1650 0.198	594 0.306 1485 0.245	491 0.370 1350 0.296	413 0.441 1237 0.353	351 0.517 1142 0.414	303 0.600 1061 0.480	232 0.784 928 0.627	183 0.992 825 0.793
1 3/4" x 3/16" [20.5lbs]	98"	U D C D	5568 0.049 5568 0.039	3564 0.077 4455 0.061	2475 0.110 3712 0.088	1818 0.150 3182 0.120	1392 0.196 2784 0.157	1100 0.248 2475 0.198	891 0.306 2227 0.245	736 0.370 2025 0.296	619 0.441 1856 0.353	527 0.517 1713 0.414	455 0.600 1591 0.480	348 0.784 1392 0.627	275 0.992 1237 0.793
2" x 1/8" [15.8lbs]	98"	U D C D	4849 0.043 4849 0.034	3103 0.067 3879 0.054	2155 0.096 3232 0.077	1583 0.131 2771 0.105	1212 0.171 2424 0.137	958 0.217 2155 0.174	776 0.268 1939 0.214	641 0.324 1763 0.259	539 0.386 1616 0.309	459 0.453 1492 0.362	396 0.525 1385 0.420	303 0.686 1212 0.549	239 0.868 1077 0.694
2" x 3/16" [23.3lbs]	108"	U D C D	7273 0.043 7273 0.034	4655 0.067 5818 0.054	3232 0.096 4849 0.077	2375 0.131 4156 0.105	1818 0.171 3636 0.137	1437 0.217 3232 0.174	1164 0.268 2909 0.214	962 0.324 2645 0.259	808 0.386 2424 0.309	689 0.453 2238 0.362	594 0.525 2078 0.420	455 0.686 1818 0.549	359 0.868 1616 0.694
2 1/4" x 3/16" [26.1lbs]	118"	U D C D	9205 0.038 9205 0.030	5891 0.060 7364 0.048	4091 0.086 6136 0.069	3006 0.117 5260 0.093	2301 0.152 4602 0.122	1818 0.193 4091 0.154	1473 0.238 3682 0.190	1217 0.288 3347 0.230	1023 0.343 3068 0.274	871 0.402 2832 0.322	751 0.467 2630 0.373	575 0.610 2301 0.488	455 0.771 2046 0.617
2 1/2" x 3/16" [28.9lbs]	128"	U D C D	11364 0.034 11364 0.027	7273 0.054 9091 0.043	5051 0.077 7576 0.062	3711 0.105 6494 0.084	2841 0.137 5682 0.110	2245 0.174 5051 0.139	1818 0.214 4546 0.171	1503 0.259 4132 0.207	1263 0.309 3788 0.247	1076 0.362 3497 0.290	928 0.420 3247 0.336	710 0.549 2841 0.439	561 0.694 2525 0.555

Bearing Bar Size	Nominal Weight (psf)*	Maximum Pedestrian Span**
For Serrated grating, the depth of grating required for a specific load is 1/4" greater than in the table.
*Weight per square foot based upon 11-W-4 grating. Add .60 psf for 2" on center cross rods.
**Maximum pedestrian load is defined as a 100lb uniform load with ≤ 1/4". The 1/4" maximum deflection criteria is considered consistent with pedestrian comfort, but may be exceeded for other loading conditions at the discretion of the specifying authority.
3/4" x 3/16"	9.1 lbs.	52"
1" x 1/8"	8.1 lbs.	58"
1" x 3/16"	11.9 lbs.	64"
1 1/4" x 1/8"	10 lbs.	69"
1 1/4" x 3/16"	14.7 lbs.	76"
1 1/2" x 1/8"	11.9 lbs.	79"
1 1/2" x 3/16"	17.7 lbs.	87"
1 3/4" x 1/8"	13.9 lbs.	89"
1 3/4" x 3/16"	20.5 lbs.	98"
2" x 1/8"	15.8 lbs.	98"
2" x 3/16"	23.3 lbs.	108"
2 1/4" x 3/16"	26.1 lbs.	118"
2 1/2" x 3/16"	28.9 lbs.	128"

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

11-W - Panel Sizes

Number of Bars	Bar Size
Number of Bars	1/8"	3/16"
2	13/16"	7/8"
3	1 1/2"	1 9/16"
4	2 3/16"	2 1/4"
5	2 7/8"	2 15/16"
6	3 9/16"	3 5/8"
7	4 1/4"	4 5/16"
8	4 15/16"	5"
9	5 5/8"	5 11/16"
10	6 5/16"	6 3/8"
11	7"	7 1/16"
12	7 11/16"	7 3/4"
13	8 3/8"	8 7/16"
14	9 1/16"	9 1/8"
15	9 3/4"	9 13/16"
16	10 7/16"	10 1/2"
17	11 1/8"	11 3/16"
18	11 13/16"	11 7/8"
19	12 1/2"	12 9/16"
20	13 13/16"	13 1/4"
21	13 7/8"	13 15/16"
22	14 9/16"	14 5/8"
23	15 1/4"	15 5/16"
24	15 15/16"	16"
25	16 5/8"	16 11/16"
26	17 5/16"	17 3/8"
27	18"	18 1/16"
28	18 11/16"	18 3/4"
29	19 3/8"	19 7/16"
30	20 1/16"	20 1/8"
31	20 3/4"	20 13/16"
32	21 7/16"	21 1/2"
33	22 1/8"	22 3/16"
34	22 13/16"	22 7/8"
35	23 1/2"	23 9/16"
36	24 3/16"	24 1/4"
37	24 7/8"	24 15/16"
38	25 9/16"	25 5/8"
39	26 1/4"	26 5/16"
40	26 15/16"	27"
41	27 5/8"	27 11/16"
42	28 5/16"	28 3/8"
43	29"	29 1/16"
44	29 11/16"	29 3/4"
45	30 3/8"	30 7/16"
46	31 1/16"	31 1/8"
47	31 3/4"	31 13/16"
48	32 7/16"	32 1/2"
49	33 1/8"	33 3/16"
50	33 13/16"	33 7/8"
51	34 1/2"	34 9/16"
52	35 3/16"	35 1/4"
53	35 7/8"	35 15/16"