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Mechanical deck fastening alternative to puddle welding.

fastening deck to steel joists and beams

Ensuring metal deck panels are securely attached to the supporting structural diaphragm is critically important to the deck’s performance and design shear capacity. Traditionally, arc spot puddle welding has been specified for this application, but there are many limitations to welding roof and floor deck panels.

Welding requires being tethered to and toting a bulky generator around the jobsite; it requires work stoppage in damp weather; and perhaps the biggest limitation affecting the optimal performance of puddle welds is the time required to hold the arc. Studies have shown that if the welder holds the arc less than 8.1 seconds, the weld will have a reduced capacity.

Hilti’s innovative mechanical fastening system for attaching steel deck to bar joist or structural steel beams provides a reliable and productive solution. Mechanical fastening systems are code compliant alternatives to puddle welds that offer many advantages to the building owner, designer and installer. Frame fastening systems consist of powder-actuated fasteners or screw fasteners for attaching a wide variety of steel deck profiles to structural steel and open web steel joists / bar joists. Hilti steel deck fastening systems have been extensively evaluated and hold all relevant building code approvals and evaluations including ICC ESR, COLA, FM and UL.

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