Grating Pacific

19-4 / 19-2 LOAD TABLE
BEARING BAR SIZE		UNSUPPORTED SPAN													WEIGHT PER SQ. FT.(LBS.)
BEARING BAR SIZE		2'-0"	2'-6"	3'-0"	3'-6"	4'-0"	4'-6"	5'-0"	5'-6"	6'-0"	6'-6"	7'-0"	8'-0"	9'-0"	19-4	19-2	15-4	15-2	11-4	11-2	7-4	7-2
3/4 X 1/8	U D C D	355 .099 355 .079	227 .155 284 .124	158 .223 237 .179	116 .304 203 .243	89 .397 178 .318	70 .503 158 .402	LOADS AND DEFLECTIONS ARE THEORETICAL VALUES BASED ON 18,000 PSI UNIT STRESS. FOR PEDESTRIAN COMFORT DEFLECTIONS IN EXCESS OF 1/4" ARE NOT RECOMMENDED.							4.0	4.8	4.9	5.7	6.4	7.2	9.7	10.7
3/4 X 3/16	U D C D	533 .099 533 .079	341 .155 426 .124	237 .223 355 .179	174 .304 305 .243	133 .397 266 .318	105 .503 237 .402								5.6	6.4	6.9	7.7	9.2	10.0	14.5	16.0
1 X 1/8	U D C D	632 .074 632 .060	404 .116 505 .093	281 .168 421 .134	206 .228 361 .182	156 .298 316 .238	125 .377 281 .302	101 .466 253 .372	84 .563 230 .451	70 .670 211 .536	U=SAFE UNIFORM LOAD, LBS. PER SQ FT. C=SAFE CONCENTRATED MID-SPAN LOAD, LBS. PER FT.OF GRATING WIDTH D=DEFLECTION IN INCHES				5.1	5.9	6.2	7.1	8.2	9.0	12.9	14.2
1 X 3/16	U D C D	947 .074 947 .060	606 .116 758 .093	421 .168 632 .134	309 .228 541 .182	237 .298 474 .238	187 .377 421 .302	152 .466 379 .372	125 .563 344 .451	105 .670 316 .536					7.4	8.4	9.2	10.2	12.1	13.1	19.4	21.3
1-1/4 X 1/8	U D C D	987 .060 987 .048	632 .093 789 .074	439 .134 658 .107	322 .182 564 .146	247 .238 493 .191	195 .302 439 .241	158 .372 395 .298	130 .451 359 .360	110 .536 329 .429	93 .629 304 .504	81 .730 423 .584	-		6.4	7.4	7.8	8.8	10.3	11.3	15.8	17.1
1-1/4 X 3/16	U D C D	1480 .060 1480 .048	947 .093 1184 .074	658 .134 987 .107	483 .182 846 .146	370 .238 740 .191	292 .302 658 .241	237 .372 592 .298	196 .451 538 .360	164 .536 493 .429	140 .629 455 .504	121 .730 282 .584	-		9.0	10.0	11.2	12.2	14.9	15.9	23.8	25.7
1-1/2 X 1/8	U D C D	1421 .050 1421 .040	909 .078 1137 .062	632 .112 947 .089	464 .152 812 .122	355 .199 711 .159	281 .251 632 .201	227 .310 568 .248	188 .376 517 .300	158 .447 474 .358	135 .524 437 .420	116 .608 406 .487	89 .794 355 .636	70 1.006 316 .804	7.4	8.4	9.2	10.2	12.1	13.1	18.8	20.0
1-1/2 X 3/16	U D C D	2132 .050 2132 .040	1364 .078 1705 .062	947 .112 1421 .089	696 .152 1218 .122	533 .199 1066 .159	421 .251 947 .201	341 .310 853 .248	282 .376 775 .300	237 .447 711 .358	202 .524 656 .420	174 .608 609 .487	133 .794 533 .636	105 1.006 474 .804	11.1	12.5	13.7	15.1	18.1	19.6	28.1	30.1
1-3/4 X 3/16	U D C D	2901 .043 2901 .034	1857 .067 2321 .053	1289 .096 1934 .077	947 .130 1658 .104	725 .170 1451 .136	573 .215 1289 .172	464 .266 1161 .213	384 .322 1055 .257	322 .383 967 .306	275 .450 893 .360	237 .521 829 .417	181 .681 725 .545	143 .862 645 .689	12.7	14.1	15.7	17.1	20.9	22.3	32.5	34.4
2 X 3/16	U D C D	3789 .037 3789 .030	2425 .058 3032 .047	1684 .084 2526 .067	1237 .114 2165 .091	947 .149 1895 .119	749 .189 1684 .151	606 .233 1516 .186	501 .282 1378 .225	421 .335 1263 .268	359 .393 1166 .315	309 .456 1083 .365	237 .596 947 .477	187 .754 842 .603	14.3	15.7	17.8	19.2	23.7	25.1	36.9	38.8
2-1/4 X 3/16	U D C D	4796 .033 4796 .026	3069 .052 3837 .041	2132 .074 3197 .060	1566 .101 2741 .081	1199 .132 2398 .106	947 .168 2132 .134	767 .207 1918 .166	634 .250 1744 .200	533 .298 1599 .238	454 .350 1476 .280	392 .406 1370 .324	300 .530 1199 .424	237 .670 1066 .536	15.9	17.4	19.8	21.2	26.5	27.9	41.3	43.2
2-1/2 X 3/16	U D C D	5921 .030 5921 .024	3789 .047 4737 .037	2632 .067 3947 .054	1933 .091 3383 .073	1480 .119 2961 .095	1170 .151 2632 .121	947 .186 2368 .149	783 .225 2153 .180	658 .268 1974 .215	561 .315 1822 .252	483 .365 1692 .292	370 .477 1480 .381	292 .603 1316 .483	17.5	19.0	21.8	23.3	29.2	30.7	45.6	47.5

SELECTION GUIDE: 19-4 PLAIN SURFACE GRATING

For deflection of not more than 1/4" when subjected to the severest of the following: (1) the uniform loads below; (2) under concentrated mid-span loads of 300 lbs.up to 6'-0" span; or (3) 400 lbs. for spans 6'-0" and over.

safe unif. load lbs./ sq.ft

2'-6"

3'-0"

3'-6"

4'-0"

4'-6"

5'-0

5'-6"

6'-0"

6'-6"

7'-0"

8'-0"

9'-0"

50
75
100
125
150
200
300

1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8

1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1x3/16

1 x 1/8
1 x 1/8
1 x 1/8
1 x 1/8
1 x 3/16
1-1/4x1/8
1-1/2x 3/16

1 x 3/16
1 x 3/16
1 x 3/16
1-1/4 x 1/8
1-1/4 x 1/8
1-1/4 x3/16
1-1/2 x3/16

1-1/4x 1/8
1-1/4x 1/8
1-1/4x 1/8
1-1/4x 3/16
1-1/4x 3/16
1-1/2x 3/16
1-3/4x 3/16

1-1/4x 3/16
1-1/4x 3/16
1-1/4x 3/16
1-1/2 x 1/8
1-1/2x 3/16
1-3/4x 3/16
2 x 3/16

1-1/2x 3/16
1-1/2x 3/16
1-1/2x 3/16
1-1/2x 3/16
1-3/4x 3/16
1-3/4x 3/16
2 x 3/16

1-3/4x 3/16
1-3/4x 3/16
1-3/4x 3/16
1-3/4x 3/16
1-3/4x 3/16
2 x 3/16
2-1/4x 3/16

1-3/4x 3/16
1-3/4x 3/16
1-3/4x 3/16
2 x 3/16
2 x 3/16
2-1/4x 3/16
2-1/2x 3/16

2 x 3/16
2 x 3/16
2-1/4x 3/16
2-1/4x 3/16
2-1/2x 3/16
-
-

2-1/4x 3/16
2-1/4x 3/16
2-1/2x 3/16
-
-
-
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