Brock University Residences 8, Niagara region, Ontario, Canada. Steel structure fabricated and erected by Benson Steel. Photo courtesy of: Stephen Leithwood
Conventional wisdom for using steel has been to maximize spans and provide universal products that fit nearly any building type. Girder-Slab Technologies, LLC chose a rather unorthodox approach to find a solution. First, was determined that precast slab units, common in the mid-rise residential market, combined with a steel frame could offer speed, design flexibility and value.
Although residential unit modules typically vary within a floor, they generally stack vertically for structural support, utilities and shafts. After considering the modular nature of residential construction, it was concluded that long-span precast slabs in combination with short span steel girders would be both appropriate and efficient.
The D-BEAM® girder overcame the issue associated with a standard wide flange beam sitting below the slab.
The D-BEAM® girder
The D-BEAM® girder fabrication process begins with a standard wide flange section that when uniquely cut through the web produces two equal T sections. Benson Steel then welds a flat bar to create the top flange resulting in two D-BEAM® girders from one parent beam without waste.