Manufacturers : Unistrut : Cable Ladder : Unistrut Cable Ladder Loading Information

Unistrut Cable Ladder Loading Information

Load test according CEI/IEC 61537:2001

Q = UDL (uniformly distributed load)
Safety Factor = 1.7
L = intermediate span
F = deflection = 1/100 of the intermediate span (max.)
S = splice location

Cable Ladder Loading InformationStated loadings apply to mild steel product only.

Unistrut’s load testing is in accordance with CEI/IEC 61537:2001. In practical terms this covers continuous/multi span installations, evenly loaded along the length of, and across the full width of the ladder. The end spans in these installations should be reduced to 0.75 of the intermediate spans.

DEFLECTION: Unistrut’s load and deflection figures are in accordance with CEI/IEC 61537:2001, with the characteristic deflection of Unistrut Cable Ladder limited to span/100. and load figures inclusive of a safety factor of 1.7.

ACCESSORIES: To ensure adequate support, accessories should be supported locally.

COUPLERS: The loading and deflection tables for Unistrut Cable Ladder assume that the couplers are located at the most onerous position within the span (i.e. mid span). To maintain the load/deflection figures stated in the tables, the couplers should not be located in end spans or over support locations. Only one pair of couplers should be installed per span.

Width
(mm)		 Useful Cross Section (cm2)
Type U10 Type U12 Type U15
100 75 100 125
150 113 150 188
200 150 200 250
300 225 300 375
400 300 400 500
450 338 450 563
500 375 500 625
600 450 600 750
750 563 750 938
800 600 800 1000
900 675 900 1125
1000 750 1000 1250