B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 5/08 (2006.01) B21D 47/04 (2006.01) E04C 3/07 (2006.01) E04C 3/04 (2006.01)
Patent
CA 2092810
A method is provided for the manufacture of structural members which are adapted for telescopic edge-to-edge engagement with a like structural member. The method includes cold roll-forming a structural member having an intermediate web member and opposed closed hollow side flanges extending along opposite sides of the web, the hollow side flanges being closed by welding the free edges thereof to respective junctions between the intermediate web and the hollow flanges. A slotted aperture is formed in at least one of the hollow side flanges, the slotted aperture extending between opposed ends of the hollow side flange parallel to the intermediate web. In addition, a cold roll-formed steel structural member is provided which is adapted for telescopic edge to edge engagement with a like adjacent structural member. The structural member includes an intermediate web with hollow side flanges extending along opposed sides of the web, at least one of the hollow side flanges including a slotted aperture extending between opposed ends thereof substantially parallel to the intermediate web. The slotted aperture is spaced from the junction of the web and at least one hollow side flanges having the slotted aperture therein to form flange wall portions extending from opposed faces of the intermediate web, the flange wall portions have spaced respective free edges defining the boundaries of the slotted aperture.
Borden Ladner Gervais Llp
Tube Technology Pty. Ltd.
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