Sheet metal structural member, construction panel and method of construction

A method of constructing a building panel and comprising the steps of;

• assembling a plurality of structural members each of which comprises a sheet metal web defining a generally linear edge portion along one side and generally zig-zag edge portion along the other said side, said zig-zag edge portion defining wider regions and narrower regions, and said web extending in a generally zig zag fashion from one said narrower region through said wider region to the next said narrower region and defining apeces in said wider region, and forming the same into a reinforcing frame work;
• pouring a castable construction material in a form to a predetermined depth;
• placing said reinforcing frame work of structural members with said apeces of said webs extending partially into said castable material;
• permitting said castable material to cure, and,
• removing said building panel from said form work.

A method of constructing a level portion of a building and comprising the steps of:

• erecting a plurality of structural members in a generally transverse horizontal fashion at spaced apart intervals said structural members each defining a linear edge and a zig-zag edge defining wider and narrower web portions;
• placing formwork between said structural members;
• supporting said formwork by formwork support means engaging said structural members and said formwork, while permitting wider portions of said structural members to extend upwardly above said formwork at spaced intervals;
• pouring a castable construction material on said formwork, and allowing same to flow around said upwardly extending wider portions of said structural members;
• allowing said castable material to cure, and,
• thereafter removing said formwork supports and said formwork thereby forming an integral cast level portion, together with said wider portions embedded therein said structural members thereby reinforcing and supporting said level portion.