Products / 03
A bridge is a fatigue structure before it is a span. Girder depth, splice position and the connection detail decide how it behaves under repeated loading — and all three are drawn before a plate is cut.
01 / The parameters
Bridge steelwork is bought on tonnage and judged on the connection. What decides whether the job goes together on site is whether the girder was drawn for the way it would be transported and lifted: where the splice falls, how much camber is built in, and whether the bolt holes were matched in the shop or expected to line up in the air. Those are drawing-office decisions, and they are settled before fabrication starts.
02 / How it is configured
03 / Typical uses
04 / Questions
Because it decides three things at once: how long each shipped piece can be, where the heaviest lift falls, and where the bolted connection has to be assembled in the air rather than on the ground. Move the splice and the transport plan, the crane plan and the erection sequence all move with it. Fixing it at drawing stage is what keeps the site work to bolting.
It depends on the span, the dead load and what the deck sits on. A girder that deflects under its own load plus the deck will sit low unless camber is built in at fabrication, and camber cannot be added after the plates are welded. It is calculated with the rest of the design rather than decided in the shop.
Yes, and for spliced girders it is the usual route. Trial assembly proves the drilled holes, the bearing seats and the overall geometry while the pieces are still in the shop, where a mismatch can be corrected with the plates at hand instead of on a site with a crane waiting. The pieces are then marked and packed in splice-matched sets.
05 / Request a quote
Tell us about your project. Country, what the building is for, approximate size and when you need it are enough — you do not need final dimensions to start. You will get a preliminary layout first, then a quotation against that layout.
I usually reply the same day. · preliminary layout before quotation · no price list is published, every building is quoted per project
