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 xx 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 xx 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 15 /8 up and slot down. RUNG TYPE SR SLOTTED† MECHANICAL PROPERTIES MINIMUM THICKNESS = 0.102 " MOMENT OF INERTIA: IX 1.63 " 9 xx 1.63 " 0.38 " 0.38 " = 0.1848 IN4 SECTION MODULUS: SX = 0.2039 IN3 6 6 9 12 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 30 " . SR rungs are installed alternating slot MINIMUM THICKNESS = 0.070 " MOMENT OF INERTIA: IX = 0.0510 IN4 SECTION MODULUS: SX = 0.0981 IN3 6 6 9 12 = 0.044 IN4 SECTION MODULUS: SX = 0.0869 IN3 6 6 9 12 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 30 36 42 48 1 5330 3553 2665 1777 1332 AH AH AH AH 2 6814 4276 3007 1738 1104 AH AH AH AH 12* 1 2665 1777 1332 888 2 3407 2138 1504 869 18 1 1777 1184 888 592 2 2271 1425 1002 579 1 3553 2369 1777 1184 888 AH AH AH AH 2 4543 2851 2005 1159 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 30 12* 1 AL AL AL AL AL 2 AL AL AL AL AL 18 1 AL AL AL AL AL 2 AL AL AL AL AL 907 762 680 572 453 381 36 756 546 567 410 378 273 42 1 AL AL AL AL AL 1360 1134 972 2 AL AL AL AL AL 1143 819 1 AL AL AL AL AL 2 AL AL AL AL AL 588 648 392 486 294 324 196 48 850 415 567 276 425 207 283 138 36 42 48 1 9999 8700 6525 4350 3262 2610 2175 1864 1631 2 9999 8700 6525 4350 3262 2610 2175 1864 1576 1 8700 5800 4350 2900 2175 1740 1450 1243 1087 2 8700 5800 4350 2900 2175 1740 1450 1243 1050 12* 1 6525 4350 3262 2175 1631 1305 1087 932 2 6525 4350 3262 2175 1631 1305 1087 932 18 1 4350 2900 2175 1450 1087 870 2 4350 2900 2175 1450 1087 870 725 725 621 621 816 788 544 525 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