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Prestressed beams of steel and concrete
Method of prestressing beams consisting of rolled steel joists encased in concrete, called "Preflex" beams; rolled steel joist is bent so that it has deflection about equal to and in same direction as, deflection which will be caused by imposed loads; while beam is held in bent position concrete is cast around bottom flange; beam is relieved and its elastic recovery compresses concrete.
Prestressed beams of steel and concrete
Method of prestressing beams consisting of rolled steel joists encased in concrete, called "Preflex" beams; rolled steel joist is bent so that it has deflection about equal to and in same direction as, deflection which will be caused by imposed loads; while beam is held in bent position concrete is cast around bottom flange; beam is relieved and its elastic recovery compresses concrete.
Prestressed beams of steel and concrete
Concrete Constr Eng
Baes, L. (author) / Lipski, A. (author)
1953
Article (Journal)
English
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