SU Rung

This is the upgrade slotted rung for all steel ladder cable trays. SU rungs are installed alternating slot up and slot down.

RUNG TYPE MECHANICAL PROPERTIES
SU
 SLOTTED† Minumum thickness = 0.120"
Moment of Inertia: Ix = 0.0531 in4
Section Modulus: Sx = 0.0921 in3
RUNG
SPACING
 LOAD
TABLE		 SAFE LOAD LIMITS (LBS/FT)
TRAY WIDTH (IN.)
6 9 12 18 24 30 36 42 48
6"
1
 3999 3999 3066 2044 1533 1226 1022 876 766
2
 3999 3999 3066 2044 1499 1040 733 514 350
9"
1
 3999 2725 2044 1363 1022 818 681 584 511
2
 3999 2725 2044 1363 1000 693 489 343 233
12"*
1
 3066 2044 1533 1022 766 613 511 438 383
2
 3066 2044 1533 1022 750 520 366 257 175
18"
1
 2044 1363 1022 681 511 409 341 292 255
2
 2044 1363 1022 681 500 347 244 171 117
1

Safe Load/Cable Load Only: Allowable uniformly-distributed 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.

2

Safe Load / Cable Load +200 lbs: Allowable uniformly-distributed 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.

3

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.

* Single rung load capacity: The data shown for 12" rung spacing is equivalent to the load capacity of the single rung.

† Slotted rungs are installed alternating slot up and slot down.