Track Tolerances - BS 466

Overhead crane rails are typically installed to tolerances set out in BS466 1984 Appendix F. (British standard specification for power driven overhead travelling cranes, Semi Goliath and Goliath cranes for general use).

It should be noted that gantry crane rails are generally only installed to tolerances for alignment and span. The level of the rail bearing structure determines the level of the rail.

The rail bearing structure should therefore be surveyed to ensure compliance with the required installation tolerances.

Track tolerance diagram