摘要 |
A method of forming and using a metal I-beam (2) includes hot rolling an elongated metal workpiece to establish a web (10) and a pair of flanges (4, 6) on the edges thereof. The web (10) is formed with elongated reinforcement (20, 22) of solid cross section having a generally straight longitudinal axis oriented generally parallel to the flanges (4, 6). The hot rolled I-beam (2) is cooled without forming substantial waves in the web (10) and the I-beam (2) is subsequently secured in a building construction or other structural product. The method involves the longitudinally oriented reinforcing means (20, 22) which preferably are one or more elongated laterally projecting ribs (20, 22) having such a mass that the average temperature of the web (10) prior to cooling will be sufficiently close to the average temperature of the flanges (4, 6) prior to cooling such that the formation of waves within the web during cooling will be resisted.
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