and thermal movement create stresses in flashing
which must be resisted by careful detailing of
attachment.
While standing seam roofing presents continuous,
sealed surface to the elements, flashing transitions
are often the cause of serious problems. Overhangs
are especially susceptible to high wind forces, and
attachment at the edges should be carefully
designed. Copious use of sealants and closure
pieces molded to conform to the roof panels is
imperative.
5. Building may require equipment such as antennae,
ladders or lightning rods installed on roof. Access
to roof-mounted mechanical equipment is often
required. Provide walking surfaces and attachment
accessories which do not compromise integrity of
roof system. These accessories should provide
support without penetrating roofing panels. Usually
this is done with clamps attached to standing seam,
or specially designed clips. Provide curbs or
structural supports for mechanical equipment. Where
condensate or other piping will be attached to or
come in contact with roofing panels, ensure that the
piping and anchorage materials are compatible with
roof panel base metal to avoid corrosion from
galvanic action. Ensure that condensate or other
discharge of liquid onto roof panels will not stain
or corrode panel finish and/or base metal.
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PART 1
GENERAL
1.1
REFERENCES
**************************************************************************
NOTE: Issue (date) of references included in
project specifications need not be more current than
provided by the latest guide specification. Use of
SpecsIntact automated reference checking is
recommended for projects based on older guide
specifications.
**************************************************************************
The publications listed below form a part of this specification to the
extent referenced. The publications are referred to within the text by the
basic designation only.
AMERICAN IRON AND STEEL INSTITUTE (AISI)
AISI SG-973
(1996) Cold-Formed Steel Design Manual
ASTM INTERNATIONAL (ASTM)
ASTM A 36/A 36M
(2004) Carbon Structural Steel
ASTM A 366/A 366M
(1997e1) Commercial Steel, Sheet,
Carbon,(0.15 Maximum Percent Cold-Rolled
SECTION 07611N
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