Portal frame: Revision history

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7 March 2010

28 June 2008

  • curprev 20:0620:06, 28 June 2008‎ Ok talk contribs‎ 1,105 bytes +1,105‎ New page: Steel portal frames are capable of spanning large distances. They are used in the construction of factories and warehouses, and other low-rise buildings that require wide spans. Wall and r...
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