| 摘要 |
A structural member suitable for use as a joist or beam formed from two continuous very rigid galvanized steel flanges. (3) role formed with a mainly omega shape cross section, a longitudinal extending opening, in the channel defines a socket (7) for reception of a continuous solid web (2) formed, from plywood or other suitable structural material. This web is mounted the entire length of the galvanized steel flanges, both top and bottom flanges are fastened to the web. The result is a continuous monolithic composite structural member.
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