PW LADDER TRAY STANDARD RUNGS This is the standard rung for all 6 " -24 " wide aluminum ladder trays. RUNG TYPE MECHANICAL PROPERTIES AL I-BEAM MINIMUM THICKNESS = 0.050 " MOMENT OF INERTIA: IX 1.00 " 9 x x 1.00 " .081 " This is the standard rung for all aluminum ladder trays 30 " and wider. RUNG TYPE MECHANICAL PROPERTIES AH I-BEAM 1.00 " 9 x x 1.00 " .126 " This is the standard rung for tray systems 4812 and 4904. Designed for extremely heavy load applications. This profile will accept strut hardware and accessories. Trays which use this rung will have a load depth equal to the side rail height minus 1-5/8 " . SR rungs are installed alternating slot up and slot down. RUNG TYPE SR SLOTTED†MECHANICAL PROPERTIES MINIMUM THICKNESS = 0.102 " MOMENT OF INERTIA: IX 1.63 " 9 x x 1.63 " 0.38 " 0.38 " = 0.1848 IN4 SECTION MODULUS: SX = 0.2039 IN3 6 6 n1 9999 n2 9999 n1 8700 n2 8700 12* n1 6525 n2 6525 18 n1 4350 n2 4350 9 8700 8700 5800 5800 4350 4350 2900 2900 12 6525 6525 4350 4350 3262 3262 2175 2175 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 4350 4350 2900 2900 2175 2175 1450 1450 3262 3262 2175 2175 1631 1631 1087 1087 30 2610 2610 1740 1740 1305 1305 870 870 MINIMUM THICKNESS = 0.070 " MOMENT OF INERTIA: IX = 0.0510 IN4 SECTION MODULUS: SX = 0.0981 IN3 6 6 n1 AL n2 AL n1 AL n2 AL 12* n1 AL n2 AL 18 n1 AL n2 AL 9 AL AL AL AL AL AL AL AL 12 AL AL AL AL AL AL AL AL = 0.044 IN4 SECTION MODULUS: SX = 0.0869 IN3 6 6 n1 5330 n2 6814 n1 3553 n2 4543 12* n1 2665 n2 3407 18 n1 1777 n2 2271 9 3553 4276 2369 2851 1777 2138 1184 1425 12 2665 3007 1777 2005 1332 1504 888 1002 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 1777 1738 1184 1159 888 869 592 579 30 36 42 48 1332 AH AH AH AH 1104 AH AH AH AH 888 AH AH AH AH 736 AH AH AH AH 667 AH AH AH AH 552 AH AH AH AH 444 AH AH AH AH 368 AH AH AH AH A SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 AL AL AL AL AL AL AL AL 30 AL 1360 AL 1143 AL AL AL AL AL AL 907 762 680 572 453 381 36 1134 819 756 546 567 410 378 273 42 972 588 648 392 486 294 324 196 48 850 415 567 276 425 207 283 138 36 2175 2175 1450 1450 1087 1087 725 725 42 1864 1864 1243 1243 932 932 621 621 48 1631 1576 1087 1050 816 788 544 525 B.32 WWW.LEGRAND.US/CABLOFIL METALLIC RUNG OPTIONS RUNG RUNG SPACING LOAD TYPE SPACING LOAD TYPE RUNG SPACING LOAD TYPEhttp://WWW.LEGRAND.US/CABLOFIL