electrical connections, flux shall conform to ASTM B 32.
3.1.3
Galvanizing
Ferrous metal shall be hot-dip galvanized in accordance with ASTM A 123/A
123M. Screws, bolts, nuts, and other fastenings and supports shall be
corrosion resistant.
3.1.4
Fungus Treatment
Completely treat system components for fungus resistance. Do not use
treated materials containing mercury-bearing fungicide. Treating materials
shall not increase flammability of material or surface being treated.
Treating materials shall not cause skin irritation or other personnel
injury during fabrication, transportation, operation, or maintenance of
equipment, or during use of finished items when used for the purpose
intended.
3.1.5
Conduit
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NOTE: Where design requirements must conform to
NACSIM 5203, "Guidelines for Facility Design and
RED/BLACK Installation," refer to Military Handbook
MIL-HDBK-232.
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Install in accordance with NFPA 70 and Section 16402 INTERIOR DISTRIBUTION
SYSTEM.
3.1.6
Underground Cable Installation
Underground conductors connecting protected structures and objects to the
central alarm updating and display unit shall be run direct burial or in
conduit as specified in Section 16302N UNDERGROUND TRANSMISSION AND
DISTRIBUTION. Coaxial cable shall not be spliced. If permitted, cables
connecting protected structures and objects to the security control console
shall be sized such that initially only approximately 60 percent of the
circuit pairs will be used. Cable pairs not used shall be reserved for
future use of additional detection circuits.
3.1.7
Exterior Fences
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NOTE: Coordinate this requirement with requirements
of Section 02821, "Chain Link Fences and Gates."
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Preparation of existing fences [or installation of new fences] shall ensure
a rigid fence system for installation of fence-mounted detection systems or
a detection system where loose fence fabric might prove troublesome. A
rigid fence and fence fabric shall be ensured to minimize nuisance alarms.
Fences shall be additionally braced, provided with fabric ground anchors or
curbs, tensioning devices, top and/or bottom rails, soft-seated gate
latches, and reanchored outriggers for barbed wire to ensure a
vibration-free installation. Relocate large signs which are fence
supported to separate support posts to preclude interference with fence
detection systems.
SECTION 13703N
Page 68
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