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Heavy-Duty Steel GratingHeavy-Duty Welded Grating has the strength for heavy-duty load areassuch as airfields, highways, industrial plants, truck and bus terminals,parking lots and railroad yards. Common uses are flooring, driveways,subway and tunnel ventilation grilles, curb inlet grates, ramps, docks, etc.Standard heavy-duty bar grating is resistance-welded for durability,strength and safety using an automated electric/hydraulic weldingprocess. High temperatures, combined with high pressure, fuse thebearing bars and cross bars together to form a permanent joint.It is a sturdy grating to carry loads and maintain the same level overmany years of use. Whenever rolling wheel loads are to be used over thegrating, we recommend that the grating be load banded to add lateralstrength. Serrations are available on bars up to 3/8" thick to provideadditional traction for rolling loads.Also, AMICO-Klemp is one of the few manufacturers that has thecapability of providing you with those “really big” grates. Our heavy-dutyfabrication department regularly custom fabricates grating to meet specific project requirements. Virtually any bar size and depth can be madeto order.HEAVY-DUTY WELDED STEEL BAR 0-H-238-H-438-H-225

Steel Bar Grating Heavy-DutyHEAVY-DUTY WELDED (H) 15/16" C/C Bearing Bars15-W-415-W-2Cross Rods 4" C/CU safe uniform load, psf (page 92)C safe concentrated load, pfw (page 92)D deflection, inchesE modulus of elasticity, 29,000,000 psiF fiber stress, 20,000 psiMaterial: ASTM A-36Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table.General: Loads and deflections are theoretical and based on static loading.Deflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort.These can be exceeded for other types of loads with engineer’s approval.For deflections of uniform and concentrated loads, consult AMICO-Klemp ’sengineering departments.Cross Rods 2" C/CNON-SERRATED & SERRATEDLOAD & DEFLECTION TABLEBarSizeSymbol1" x 15-H-215-H-415-H-215-H-415-H-215-H-415-H-21" x 5/16"1" x 3/8"1-1/4" x 1/4"1-1/4" x 5/16"1-1/4" x 3/8"1-1/2" x 1/4"1-1/2" x 5/16"1-1/2" x 3/8"1-3/4" x 1/4"1-3/4" x 5/16"1-3/4" x 3/8"2" x 1/4"2" x 5/16"2" x 3/8"2-1/4" x 1/4"2-1/4" x 5/16"2-1/4" x 3/8"2-1/2" x 1/4"2-1/2" x 5/16"2-1/2" x 3/8"2-3/4" x 1/4"2-3/4" x 5/16"2-3/4" x .641.147.148.7SPAN (Direction of Bearing Bar)Sec. ModPer Ft.Of 87905804441,422 1,185 1,0168891,4229887265561,778 1,481 1,270 1,1111,707 1,1858716672,133 1,778 1,524 1,3331,778 1,2359076942,222 1,852 1,587 1,3892,222 1,543 1,1348682,778 2,315 1,984 1,7362,667 1,852 1,361 1,0423,333 2,778 2,381 2,0832,560 1,778 1,306 1,0003,200 2,667 2,286 2,0003,200 2,222 1,633 1,2504,000 3,333 2,857 2,5003,840 2,667 1,959 1,5004,800 4,000 3,429 3,0003,484 2,420 1,778 1,3614,356 3,630 3,111 2,7224,356 3,025 2,222 1,7015,444 4,537 3,889 3,4035,227 3,630 2,667 2,0426,533 5,444 4,667 4,0834,551 3,160 2,322 1,7785,689 4,741 4,063 3,5565,689 3,951 2,902 2,2227,111 5,926 5,079 4,4446,827 4,741 3,483 2,6678,533 7,111 6,095 5,3335,760 4,000 2,939 2,2507,200 6,000 5,143 4,5007,200 5,000 3,673 2,8139,000 7,500 6,429 5,6258,640 6,000 4,408 3,37510,800 9,000 7,714 6,7507,111 4,938 3,628 2,7788,889 7,407 6,349 5,5568,889 6,173 4,535 3,47211,111 9,259 7,937 6,94410,667 7,407 5,442 4,16713,333 11,111 9,524 8,3338,604 5,975 4,390 3,36110,756 8,963 7,683 6,72210,756 7,469 5,488 4,20113,444 11,204 9,603 8,40312,907 8,963 6,585 5,04216,133 13,444 11,524 05,042

Steel Bar Grating Heavy-Duty15-H-4 & 15-H-2 (continued)NON-SERRATED & SERRATEDLOAD & DEFLECTION TABLEBarSize3" x 1/4"3" x 5/16"3" x 3/8"3-1/4" x 1/4"3-1/4" x 5/16"3-1/4" x 3/8"3-1/2" x 1/4"3-1/2" x 5/16"3-1/2" x 3/8"4" x 1/4"4" x 5/16"4" x 3/8"4-1/2" x 1/4"4-1/2" x 5/16"4-1/2" x 3/8"5" x 1/4"5" x 5/16"5" x 3/8"6" x 1/4"6" x 5/16"6" x .6675SPAN (Direction of Bearing Bar)Sec. ModPer Ft.Of 013.33316.66720.00019.20024.00028.800H-15 PANEL WIDTH (inches)No. of BarsNote: H-Heavy Duty cross rods may extend 1/8" each side. Panel widths do not include these extensions.2343111/4" Bar5/16" Bar3/8" Bar1 /1611/415/16No. of Bars211/4" Bar5/16" Bar3/8" Bar19191/16191/82 /823/1621/43 /1631/833/1644 /1641/84 /16551/165 /8515/1666 /1667/8615/167 /4713/1677/88 1735131303132333435363738209 /8 10 /16 11 /2 12 /16 13 /8 14 /16 15 /4 16 /16 17 /8 181/16911/16 105/8 119/16 121/2 137/16 143/8 155/16 161/4 173/16 181/893/4 1011/16 115/8 129/16 131/2 147/16 153/8 165/16 171/4 183/16391915/16 207/8 2113/16 223/4 2311/16 245/8 259/16 261/2 277/16 283/8 295/16 301/4 313/16 321/8 331/1634 3415/16 357/820 2015/16 217/8 2213/16 233/4 2411/16 255/8 269/16 271/2 287/16 293/8 305/16 311/4 323/16 331/8 341/1635 3515/16201/1621 2115/16 227/8 2313/16 243/4 2511/16 265/8 279/16 281/2 297/16 303/8 315/16 321/4 333/16 341/8 351/1636All 1/4" Bar Size Can Go Up To 39 Bars Wide1 x 5/16 thru 2-1/2 x 3/8 Up To 39 Bars Wide2-3/4 x 5/16 Thru 6 x 3/8 Up To 26 Bars Wide27

Steel Bar Grating Heavy-DutyHEAVY-DUTY WELDED (H) 1-3/16" C/C Bearing Bars19-H-419-H-2Cross Rods 4" C/CU safe uniform load, psf (page 92)C safe concentrated load, pfw (page 92)D deflection, inchesE modulus of elasticity, 29,000,000 psiF fiber stress, 20,000 psiMaterial: ASTM A-36Serrated Bars: For serrated grating, the depth of grating required for aspecified load is 1/4" deeper than that shown in the table.General: Loads and deflections are theoretical and based on static loading.Deflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort.These can be exceeded for other types of loads with engineer’s approval.For deflections of uniform and concentrated loads, consult AMICO-Klemp ’sengineering departments.Cross Rods 2" C/CNON-SERRATED & SERRATEDLOAD & DEFLECTION TABLEBarSizeSymbol1" x 19-H-219-H-419-H-219-H-419-H-219-H-419-H-21" x 5/16"1" x 3/8"1-1/4" x 1/4"1-1/4" x 5/16"1-1/4" x 3/8"1-1/2" x 1/4"1-1/2" x 5/16"1-1/2" x 3/8"1-3/4" x 1/4"1-3/4" x 5/16"1-3/4" x 3/8"2" x 1/4"2" x 5/16"2" x 3/8"2-1/4" x 1/4"2-1/4" x 5/16"2-1/4" x 3/8"2-1/2" x 1/4"2-1/2" x 5/16"2-1/2" x 3/8"2-3/4" x 1/4"2-3/4" x 5/16"2-3/4" x 833.337.839.3SPAN (Direction of Bearing Bar)Sec. ModPer Ft.Of 1237801,404 1,1701,3479361,684 1,4041,4049751,754 1,4621,754 1,2182,193 1,8272,105 1,4622,632 2,1932,021 1,4042,526 2,1052,526 1,7543,158 2,6323,032 2,1053,789 3,1582,751 1,9103,439 2,8653,439 2,3884,298 3,5824,126 2,8655,158 4,2983,593 2,4954,491 3,7434,491 3,1195,614 4,6785,389 3,7436,737 5,6144,547 3,1585,684 4,7375,684 3,9477,105 5,9216,821 4,7378,526 7,1055,614 3,8997,018 5,8487,018 4,8738,772 7,3108,421 5,84810,526 8,7726,793 4,7178,491 7,0768,491 5,89710,614 8,84510,189 7,07612,737 3473,3681,1372,8421,4213,5531,7