Light Duty Grating

Bearing Bar Size [Nominal Wt. (psf)**]	Recomm. Max. Clear Span (in.) for 1/4" Deflection Under Uniform Load of 100psf.	Load Deflection	Unsupported Span (Inches)
Bearing Bar Size [Nominal Wt. (psf)**]		Load Deflection	24"	30"	36"	42"	48"	54"	60"	66"	72"	78"	84"	90"	96"	102"	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=18,000 psi, E=29,000,000 psi (For ASTM 1011/A 1011/M SS GR36 Type 1, F=20,000 psi and tabular values for U, C, and D shall be multiplied by 1.11) 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" [4lbs]	42"	U D C D	355 0.099 355 0.079	227 0.155 284 0.124	158 0.223 237 0.179	116 0.304 203 0.243	89 0.397 178 0.318	70 0.503 158 0.402
3/4" x 3/16" [6lbs]	46"	U D C D	533 0.099 533 0.079	341 0.155 426 0.124	237 0.223 355 0.179	174 0.304 305 0.243	133 0.397 266 0.318	105 0.503 237 0.402
1" x 1/8" [6lbs]	51"	U D C D	632 0.074 632 0.079	404 0.116 505 0.124	281 0.168 421 0.179	206 0.228 361 0.243	158 0.298 316 0.318	125 0.377 281 0.302	101 0.466 253 0.372	84 0.563 230 0.451	70 0.670 211 0.536
1" x 3/16" [8lbs]	57"	U D C D	947 0.074 947 0.060	606 0.116 758 0.093	421 0.168 632 0.134	309 0.228 541 0.182	237 0.298 474 0.238	187 0.377 421 0.302	152 0.466 379 0.372	125 0.563 344 0.451	105 0.670 316 0.536
1 1/4" x 1/8" [7lbs]	61"	U D C D	987 0.060 987 0.048	632 0.093 789 0.074	439 0.134 658 0.107	322 0.182 564 0.146	247 0.238 493 0.191	195 0.302 439 0.241	158 0.372 395 0.298	130 0.451 359 0.360	110 0.536 329 0.429	93 0.629 304 0.504	81 0.730 282 0.584
1 1/4" x 3/16" [9lbs]	67"	U D C D	1487 0.060 1480 0.048	947 0.093 1184 0.074	658 0.134 987 0.107	483 0.182 846 0.146	370 0.238 740 0.191	292 0.302 658 0.241	237 0.372 592 0.298	196 0.451 538 0.360	164 0.536 493 0.429	140 0.629 455 0.504	121 0.730 423 0.584
1 1/2" x 1/8" [8lbs]	70"	U D C D	1421 0.050 1421 0.040	909 0.078 1137 0.062	632 0.112 947 0.089	464 0.152 812 0.122	355 0.199 711 0.159	281 0.251 632 0.201	227 0.310 568 0.248	188 0.376 517 0.300	158 0.447 474 0.358	135 0.524 437 0.420	116 0.608 406 0.487	101 0.698 379 0.559	89 0.794 355 0.636	79 0.897 334 0.718	70 1.006 316 0.804
1 1/2" x 3/16" [11lbs]	77"	U D C D	2132 0.050 2132 0.040	1364 0.078 1705 0.062	947 0.112 1421 0.089	696 0.152 1218 0.122	533 0.199 1066 0.159	421 0.251 947 0.201	341 0.310 853 0.248	282 0.376 775 0.300	237 0.447 711 0.358	202 0.524 656 0.420	174 0.608 609 0.487	152 0.698 568 0.559	133 0.794 533 0.636	118 0.897 502 0.718	105 1.006 474 0.804
1 3/4" x 3/16" [13lbs]	87"	U D C D	2901 0.043 2901 0.034	1857 0.067 2321 0.053	1289 0.096 1934 0.077	947 0.130 1658 0.104	725 0.170 1451 0.136	573 0.215 1289 0.172	464 0.266 1161 0.213	384 0.322 1055 0.257	322 0.383 967 0.306	275 0.450 893 0.360	237 0.521 829 0.417	206 0.599 774 0.479	181 0.681 725 0.545	161 0.769 683 0.615	143 0.862 645 0.689
2" x 3/16" [14lbs]	96"	U D C D	3789 0.037 3789 0.030	2425 0.058 3032 0.047	1684 0.084 2526 0.067	1237 0.114 2165 0.091	947 0.149 1895 0.119	749 0.189 1684 0.151	606 0.233 1516 0.186	501 0.282 1387 0.225	421 0.335 1263 0.268	359 0.393 1166 0.315	309 0.456 1083 0.365	269 0.524 1011 0.419	237 0.596 947 0.477	210 0.673 892 0.538	187 0.754 842 0.603
2 1/4" x 3/16" [16lbs]	105"	U D C D	4796 0.033 4796 0.026	3069 0.052 3837 0.041	2132 0.074 3197 0.060	1566 0.101 2741 0.081	1199 0.132 2398 0.106	947 0.168 2132 0.134	767 0.207 1918 0.166	634 0.250 1744 0.200	533 0.298 1599 0.238	454 0.350 1476 0.280	392 0.406 1370 0.324	341 0.466 1279 0.372	300 0.530 1199 0.424	266 0.598 1128 0.478	237 0.670 1066 0.536
2 1/2" x 3/16" [18lbs]	113"	U D C D	5921 0.030 5921 0.024	3789 0.047 4737 0.037	2632 0.067 3947 0.054	1933 0.091 3383 0.073	1480 0.119 2961 0.095	1170 0.151 2632 0.121	947 0.186 2368 0.149	783 0.225 2153 0.180	658 0.268 1974 0.215	561 0.315 1822 0.252	483 0.365 1692 0.292	421 0.419 1579 0.335	370 0.477 1480 0.381	328 0.538 1393 0.431	292 0.603 1316 0.483

Bearing 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=18,000 psi, E=29,000,000 psi (For ASTM 1011/A 1011/M SS GR36 Type 1, F=20,000 psi and tabular values for U, C, and D shall be multiplied by 1.11) 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"	4 lbs.	42"
3/4" x 3/16"	6 lbs.	46"
1" x 1/8"	6 lbs.	51"
1" x 3/16"	8 lbs.	57"
1 1/4" x 1/8"	7 lbs.	61"
1 1/4" x 3/16"	9 lbs.	67"
1 1/2" x 1/8"	8 lbs.	70"
1 1/2" x 3/16"	11 lbs.	77"
1 3/4" x 3/16"	13 lbs.	87"
2" x 3/16"	14 lbs.	96"
2 1/4" x 3/16"	16 lbs.	105"
2 1/2" x 3/16"	18 lbs.	113"

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	921 0.099 921 0.079	589 0.155 736 0.124	409 0.223 614 0.179	301 0.304 526 0.243	230 0.397 460 0.318	182 0.503 409 0.402	147 0.621 368 0.497
1" x 1/8" [8.1lbs]	59"	U D C D	1091 0.074 1091 0.060	698 0.116 873 0.093	485 0.168 727 0.134	356 0.228 623 0.182	273 0.298 546 0.238	216 0.377 485 0.302	175 0.466 436 0.372	144 0.563 397 0.451
1" x 3/16" [11.9lbs]	65"	U D C D	1636 0.074 1636 0.060	1047 0.116 1309 0.093	727 0.168 1091 0.134	534 0.228 935 0.182	409 0.298 818 0.238	323 0.377 727 0.302	262 0.466 655 0.372	216 0.563 595 0.451	182 0.670 546 0.536
1 1/4" x 1/8" [10lbs]	69"	U D C D	1705 0.060 1705 0.048	1091 0.093 1364 0.074	758 0.134 1136 0.107	557 0.182 974 0.146	426 0.238 852 0.191	337 0.302 758 0.241	273 0.372 682 0.298	225 0.451 620 0.360	189 0.536 568 0.429	161 0.629 525 0.504
1 1/4" x 3/16" [14.7lbs]	77"	U D C D	2557 0.060 2557 0.048	1636 0.093 2046 0.074	1136 0.134 1705 0.107	835 0.182 1461 0.146	639 0.238 1278 0.191	505 0.302 1136 0.241	409 0.372 1023 0.298	338 0.451 930 0.360	284 0.536 852 0.429	242 0.629 787 0.504	209 0.730 731 0.584
1 1/2" x 1/8" [11.9lbs]	80"	U D C D	2455 0.050 2455 0.040	1571 0.078 1964 0.062	1091 0.112 1636 0.089	802 0.152 1403 0.122	614 0.199 1227 0.159	485 0.251 1091 0.201	393 0.310 982 0.248	325 0.376 893 0.300	273 0.447 818 0.358	232 0.524 755 0.420	200 0.608 701 0.487	153 0.794 614 0.636
1 1/2" x 3/16" [17.7lbs]	88"	U D C D	3682 0.050 3682 0.040	2356 0.078 2946 0.062	1636 0.112 2455 0.089	1202 0.152 2104 0.122	921 0.199 1841 0.159	727 0.251 1636 0.201	589 0.310 1473 0.248	487 0.376 1339 0.300	409 0.447 1227 0.358	349 0.524 1133 0.420	301 0.608 1052 0.487	230 0.794 921 0.636	182 1.006 818 0.804
1 3/4" x 1/8" [13.9lbs]	89"	U D C D	3341 0.043 3341 0.034	2138 0.067 2673 0.053	1485 0.096 2227 0.077	1091 0.130 1909 0.104	835 0.170 1671 0.136	660 0.215 1485 0.172	535 0.266 1336 0.213	442 0.322 1215 0.257	371 0.383 1114 0.306	316 0.450 1028 0.360	273 0.521 955 0.417	209 0.681 835 0.545	165 0.862 742 0.689
1 3/4" x 3/16" [20.5lbs]	99"	U D C D	5011 0.043 5011 0.034	3207 0.067 4009 0.053	2227 0.096 3341 0.077	1636 0.130 2864 0.104	1253 0.170 2506 0.136	990 0.215 2227 0.172	802 0.266 2005 0.213	663 0.322 1822 0.257	557 0.383 1671 0.306	474 0.450 1542 0.360	409 0.521 1432 0.417	313 0.681 1253 0.545	248 0.862 1114 0.689
2" x 1/8" [15.8lbs]	99"	U D C D	4364 0.037 4364 0.030	2793 0.058 3491 0.047	1939 0.084 2909 0.067	1425 0.114 2494 0.091	1091 0.149 2182 0.119	862 0.189 1939 0.151	698 0.233 1746 0.186	577 0.282 1587 0.225	485 0.335 1455 0.268	413 0.393 1343 0.315	356 0.456 1247 0.365	273 0.596 1091 0.477	216 0.754 970 0.603
2" x 3/16" [23.3lbs]	109"	U D C D	6546 0.037 6546 0.030	4189 0.058 5236 0.047	2909 0.084 4364 0.067	2137 0.114 3740 0.091	1636 0.149 3273 0.119	1293 0.189 2909 0.151	1047 0.233 2618 0.186	866 0.282 2380 0.225	727 0.335 2182 0.268	620 0.393 2014 0.315	534 0.456 1870 0.365	409 0.596 1636 0.477	323 0.754 1455 0.603
2 1/4" x 3/16" [26.1lbs]	120"	U D C D	8284 0.033 8284 0.026	5302 0.052 6627 0.041	3682 0.074 5523 0.060	2705 0.101 4734 0.081	2071 0.132 4142 0.106	1636 0.168 3682 0.134	1326 0.207 3314 0.166	1095 0.250 3012 0.200	921 0.298 2761 0.238	784 0.350 2549 0.280	676 0.406 2367 0.324	518 0.530 2071 0.424	409 0.670 1841 0.536
2 1/2" x 3/16" [28.9lbs]	129"	U D C D	10227 0.030 10227 0.024	6546 0.047 8182 0.037	4546 0.067 6818 0.054	3340 0.091 5844 0.073	2557 0.119 5114 0.095	2020 0.151 4546 0.121	1636 0.186 4091 0.149	1352 0.225 3719 0.180	1136 0.268 3409 0.215	968 0.315 3147 0.252	835 0.365 2922 0.292	639 0.477 2557 0.381	505 0.603 2273 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 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.	59"
1" x 3/16"	11.9 lbs.	65"
1 1/4" x 1/8"	10 lbs.	69"
1 1/4" x 3/16"	14.7 lbs.	77"
1 1/2" x 1/8"	11.9 lbs.	80"
1 1/2" x 3/16"	17.7 lbs.	88"
1 3/4" x 1/8"	13.9 lbs.	89"
1 3/4" x 3/16"	20.5 lbs.	99"
2" x 1/8"	15.8 lbs.	99"
2" x 3/16"	23.3 lbs.	109"
2 1/4" x 3/16"	26.1 lbs.	120"
2 1/2" x 3/16"	28.9 lbs.	129"

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"

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

19-W - Panel Sizes

Cross Rod Spacing

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

15-W - Panel Sizes

Cross Rod Spacing

Load Table Information

Single Span Condition

Multiple Span Condition

C=Concentrated Load

U=Uniform Load

11-W - Panel Sizes

Cross Rod Spacing

Sisk Gratings

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