2.3.3
Sealant
Provide elastomeric type sealant containing no oil or asphalt. Exposed
sealant shall cure to a rubberlike consistency. Concealed sealant may be
the nonhardening type.
2.3.4
Gaskets and Insulating Compounds
Provide nonabsorptive gaskets and insulating compounds suitable for
insulating contact points of incompatible materials. Insulating compounds
shall be nonrunning after drying.
2.3.5
Fasteners
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NOTE: Fasteners that are not color coated may be
limited to 300-series corrosion resisting steel when
warranted by atmospheric exposure conditions.
For projects in hurricane areas, self-clinching
pull-stem rivets or bolts provide greater resistance
to failures from "flutter" and uplift action of high
wind forces than sheet-metal screws.
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Provide fasteners for [standing seam metal roofs in accordance with Section
07611N STEEL STANDING SEAM ROOFING (SSSR)] [steel wall and roof panels of
zinc-coated steel, aluminum, corrosion resisting steel, or nylon capped
steel, type and size specified below or as otherwise approved for the
applicable requirements. Fasteners for aluminum wall and roof panels shall
be aluminum or corrosion resisting steel. Fasteners for structural
connections shall provide both tensile and shear strength of not less than
3.3 kN 750 pounds per fastener. Fasteners for accessories shall be the
manufacturer's standard. Exposed roof fasteners shall be gasketed or have
gasketed washers on the exterior side of the covering to waterproof the
fastener penetration. Washer material shall be compatible with the
covering; have a minimum diameter of 10 mm 3/8 inch for structural
connections; and gasketed portion of fasteners or washers shall be neoprene
or other equally durable elastomeric material approximately 3 mm 1/8 inch
thick. When wall covering is factory color finished, exposed wall
fasteners shall be color finished or provided with plastic color caps to
match the covering. Nonpenetrating fastener system using concealed clips
shall be manufacturer's standard for the system provided.]
2.3.5.1
Screws
Provide self-tapping screws not less than No. 14 diameter and not less than
No. 12 diameter if self-drilling/self-tapping type.
2.3.5.2
End-Welded Studs
Provide automatic shouldered type studs with a shank diameter of not less
than 5 mm 3/16 inch and cap or nut for holding covering against the
shoulder.
2.3.5.3
Explosive Actuated Fasteners
Fasteners for use with explosive actuated tools shall have a shank diameter
SECTION 13120
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