Technical information for Unistrut’s Cable Ladder SystemPosted On: Tuesday 27th April 2021 Back to Blog Listing
Cable Ladder - Technical Data
Technical information for Unistrut’s Cable Ladder System
Materials & Finishes
Hot-Dip Galvanized [HG]
Cable trays, brackets, cantilever arms and fittings can be hot-dip galvanized in accordance with
BS EN ISO1461:2009 and chromate d.
The minimum average Zinc Coating is as follows:
Cold Rolled From 1.5mm Steel – 55 microns
2.5mm Steel – 55 microns
Fittings spun galvanized – 45 microns
• Mild Steel - BS EN 10149-3 grade S280 - min.yeild 280 n/mm2 - UTS 370 n/mm2
Deep Hot Dip Galvanised
• BS EN 10025 S275JO+AR+CL1 or equivalent/better. 2mm min. thick material
Stainless Steel [SS]
• Stainless Steel 1.4301 (304)
• Stainless Steel 1.4404 (316L)
• Hot Rolled to B.S.EN10088-2-1.4404+1D.
• Cleaned (Pickled & Passivated) Applying a pickling process to stainless steel results in a clean product and it also removes any heat discolouration that has occurred in the welding process
Certification and Quality Standards
BS EN 61537:2007
ISO 9001 - quality system certification
ISO 14001 - environment certification
ISO 45001 - health and safety certification
Load test according to 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
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
If you would like more information on Unistrut Cable Ladder Solutions or the new Unistrut U11 Cable Ladder, please contact our technical team on firstname.lastname@example.org