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Simon Storage - ISCo East
Instrument and Electrical Installation Specification
P & I Design Ltd
DOCUMENT NO: SI003001.INS
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A DATE: 17/02/09
Tel: 00 44 (0)1642 617444
PAGE 10 OF 14
Fax: 00 44 (0)1642 616447
www.pidesign.co.uk3.10 CABLE SUPPORTS
3.10.1 Cable Ladder
Cable ladder should be installed as required in this specification.
The ladder shall be Swift type which is Hot Dip Galvanised to BS729:1971.
Standard metric widths shall be used.
Radius bends, tees, sets, reducers or other fittings shall be proprietary type by the ladder
manufacturer and his installation instructions shall be followed. Earth Continuity connectors
are to be fitted to all racking.
It shall be the contractors responsibility to provide the main supports for the racks as well as
the fixing of the racks to the main supports.
Non Standard fittings will only be allowed where expressly agreed.
Cables shall not be tiered more than two deep, in which case the larger should be nearer to
the end of the ladder.
Ladders shall be supported over their full width and secured to each support.
All bolts, nuts or washers shall be metric and sheradised, plated or otherwise effectively
protected against corrosion.
Excessive bolt projections which may make the removal of nuts at a later date difficult will
not be accepted.
When fully loaded, no span shall have a sag detectable by the eye.
Ladder runs shall be completely erected before cable laying commences and any rags, burrs
or raw edges suitable treated.