The Structural Engineer > Archive > Volume 6 (1928) > Issues > Issue 10 > The Erection of Steel Bridges (Concluded)
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The Erection of Steel Bridges (Concluded)

(6th) Girders erected by rolling over with temporary steelwork for lengthening span. A light lattice structure rather longer than half the span is bolted to the front end of the girders and engages with the opposite abutment to that upon which the span has been erected. This method of using a temporary beak for rolling over single spans is only justified when the cost of the temporary steelwork would be less than the cost of staging. D.G. Mackintosh