Kloeckner Westok rafters are the ideal lightweight, clear span roof beam, providing an economic and aesthetic structural solution with service integration opportunities along the full span. Westok rafters are pre-cambered at no cost to reduce or eliminate dead load deflection issues, and larger 100mm+ drainage cambers can be installed if required to suit the roof falls.
Many roof systems can be supported: flat, cambered, curved, pitched, tapered, cantilevered, box etc. Typically spans range from 10m to 50m+, offering a superior solution to trusses, which are frequently timely and costly to manufacture, fabricate and paint.
Straightforward splice details such as back-to-back end plates can result in medium to long spans being produced in two or three components, facilitating easy transport to site and speedy erection.
Where there is a visual preference to avoid bolted splices, long-span rafters can be manufactured and delivered to site in one piece.
Where Lateral Torsional Buckling is the critical design check, for example for a spine beam, an asymmetric Westok can be designed with a heavier top tee and lighter bottom tee, to produce a very economic structurally efficient member.
Rafters can be pinned, continuously spanning or detailed to resist end moments.
This article illustrates the various roofing solutions which can be accommodated with a Westok rafter.
Tapered Cantilevers / Backspan
If you need help with a design or manufacture of the exposed rafters in your next project, simply get in touch here.