Cantilever signal structures are used when there is insufficient space in the ’10 ft’ or either cess to allow a signal post to be used; or when land take issues preclude the use of a double legged gantry.
The Collis Engineering Ltd standard cantilever is based on a single tubular leg design. Each cantilever is supplied complete with a ladder top safety gate, an adjustable ladder bottom bracket giving +/- 75mm vertical adjustment, a signal ID plate and it’s associated bracketry.
Structures conform to the latest Network Rail, HSE and HMRI standards. Cantilevers are supplied in a hot-dip galvanised finish with all surfaces above and including the boom painted black in accordance with Network Rail specifications. All cantilevers are pre-install tested at Collis Engineering Ltd to ensure compatibility of parts. Foundation bolts can be supplied as an option.
This cantilever was designed, manufactured and installed by Collis Engineering Ltd for the Rugby to Nuneaton section of the West Coast Main Line. This exceptional cantilever is a triumph of engineering.
Cantilevers for use on electrified lines are supplied with dropper cages (painted black).
Our design package for cantilever structures includes a specific Form A, a general arrangement drawing, structural calculations to category 2 check and a separate specific Form B.