PW LADDER TRAY STANDARD CORRUGATED BOTTOM This is the standard corrugated bottom used for all aluminum, solid-bottom tray systems up to and including NEMA Class 20C. Corrugated bottoms are not available in widths greater than 36 " . For extremely heavy load applications. Ladder type tray is recommended. RUNG TYPE CA SOLID OR VENTILATED 0.88 " 0.50 " 2.19 " MECHANICAL PROPERTIES MINIMUM THICKNESS = 0.032 " 6 n1 2000 n2 2000 9 1333 1333 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 18 12 1000 1000 667 600 24 500 350 30 400 200 36 333 100 A UPGRADE BOTTOM A This is the upgrade slotted rung for all aluminum ladder cable tray. To specify trays and fittings with an ST upgraded rung replace the rung spacing with ST. ST rungs are spaced on 9 " centers. This the standard rung for tray system 4823. ST rungs are installed alternating slot up and slot down. RUNG TYPE ST SLOTTED†MECHANICAL PROPERTIES RUNG MINIMUM THICKNESS = 0.105 " MOMENT OF INERTIA: IX 1.63 " 9 x x 1.00 " 0.38 " 0.38 " SPACING = 0.0531 IN4 SECTION MODULUS: SX = 0.0917 IN3 6 6 n1 6602 n2 6602 n1 4402 n2 4402 12* n1 3301 n2 3301 18 n1 2201 n2 2201 9 4402 4402 2934 2934 2201 2201 1467 1467 12 3301 3301 2201 2201 1651 1651 1100 1100 SAFE LOAD LIMITS (LBS/FT) TRAY WIDTH (IN.) 24 18 2201 2201 1467 1467 1100 1100 734 734 1651 1604 1100 1069 825 802 550 535 30 1320 1123 880 749 660 562 440 374 36 1100 803 734 535 550 401 367 268 42 943 574 629 382 472 287 314 191 48 825 402 550 268 413 201 275 134 n1 SAFE LOAD/CABLE LOAD ONLY: Allowable uniformlydistributed cable load expressed in lbs/linear foot of tray length, based on the load carrying capability of the rung with a safety factor of 1.5. To convert Safe Load/Cable Load Only to reflect a safety factor of 2.0, multiply the safe loads shown by 0.75. n2 SAFE LOAD / CABLE LOAD +200 LBS: Allowable uniformlydistributed cable load expressed in lbs/linear foot of tray length, based on the load carrying capability of the rung with a 200 lb. concentrated static load applied at the center of the rung, without collapse. * Single rung load capacity: The data shown for 12 " rung spacing is equivalent to the load capacity of the single rung. n3 Will not support a 200 lb. concentrated static load applied at the center of the rung. [XX] Two digit code in the safe load limit tables indicates recommended rung option for specified width. †Slotted rungs are installed alternating slot up and slot down. B.33 For detailed material and finish descriptions, see page B.6. WWW.LEGRAND.US/CABLOFIL METALLIC RUNG OPTIONS LOAD TYPE LOAD TYPEhttp://WWW.LEGRAND.US/CABLOFIL