Title: Cambering: Cold Versus Heat for Steel Bridge Beams | KTA UniversityKTA-Tator
Headings: Cambering: Cold Versus Heat for Steel Bridge Beams
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Cambering: Cold Versus Heat for Steel Bridge Beams

Content: Quenching with oil, water or cold air is prohibited. Further cooling with dry compressed air or fans moving ambient temperature air is permitted after the steel has naturally cooled to 600°F or lower. Correction of Over-Camber: If a member has been over-cambered by the heat cambering process, the condition can be corrected by heating on the opposite side of the member; however, the heat is typically applied to a lesser extent than when initially inducing camber into the member. For example, if the heat was induced at four locations during the initial cambering of the member, the subsequent heat may only need to be applied to one or two locations on the opposite side to correct the over-camber condition. In steel bridge fabrication heat cambering used to be the preferred method of inducing camber into a member. Mechanical cold cambering is now becoming the method of choice, especially with rolled beams. Whichever cambering process is employed, it is important that the processes are in accordance with the applicable code, specifications, and contract documents.