Steel Deck Fastening Systems
Steel Deck Fastener Design and Selection 1.1
Nestable sidelap - Steel deck type in which the side edge
of a steel deck panel contains a partial valley profile and
overlaps, or “nests" on top of the side edge of the adjacent
steel deck panel, which contains a full valley profile. Often
fastened together using self-drilling stitch screws.
Non-diaphragm deck - A steel deck system which is
designed to carry only gravity loads.
Powder-actuated cartridge - A powder filled metal casing
used as the source of driving energy in a powder-actuated
tool. The ANSI A10.3 terminology is a “cased powder load."
Powder-Actuated Fastener (PAF) - A nail or threaded
stud fastener capable of being driven into steel, concrete or
masonry. Fasteners may be equipped with washers suitable
for clamping the fastened material to the base or supporting
material. Also referred to as Hilti DX, powder-actuated
fasteners (PAF), power-driven fasteners (PDF), drive pins
or shot pins.
Powder-actuated, Indirect-acting tool - A powder-actuated
tool in which the expanding gas of the powder load acts on
a captive piston, which in turn drives the fastener into the
base material. If the test velocity of the lightest fastener when
using the strongest powder load is less than 328 fps (100
m/s), the tool meets the ANSI A10.3 requirements and is
classified as a low-velocity tool. All Hilti powder-actuated
tools used in the construction industry are classified as
low-velocity.
Pullout - As related to fasteners, a failure mode that occurs
when the fastener pulls out of the base steel support.
Pullover - As related to fasteners, a failure mode that occurs
when the steel deck panel pulls over the fastener head or
washer(s).
Punch systems - A mechanical means of connecting two
pieces of sheet metal together by punching through the steel
to create a flap of metal which is then crimped. This is done
with a proprietary pneumatic tool on interlocking deck panels.
Purlin - A secondary horizontal structural member attached
to the primary frame and supporting the roof covering.
Sidelap - The side edge overlap of adjacent steel deck
panels (side edges parallel to the steel deck panel fluting).
Stitch screws - Screws used to fasten the overlapping edges
of two deck panels between joists or beams.
Tack weld - A weld of no structural significance. Used for
temporary attachment of steel to the supporting frame. A
weld made to hold the parts in proper alignment until the final
welds are made.
Uplift - Vertical load on the steel deck panels due to
wind forces.
Wind tacking - Limited fastening of the steel deck panel
at the edges to hold the panels in place until all specified
fastenings have been made.
Profis DF Diaphragm Software - Hilti developed,
revolutionary design and submittal generator program.
It incorporates a powerful design optimization feature
to produce cost-effective and reliable steel
deck solutions.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I PTG Decking Supplement 2014 3