ground; however, where rock is encountered,
additional rods, a ground loop, or ground grid may
be necessary. Coordinate and standardize rod
selection for individual facilities with other
specification sections.
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Provide [ground rods made of [copper-clad steel] [stainless steel] [solid
copper] conforming to conform to UL 467.] [galvanized ferrous rods
conforming to IEEE C135.30.] Provide ground rods that are not less than 20
mm 3/4 inch in diameter and 3050 mm 10 feet in length. Do not mix ground
rods of copper-clad steel, stainless steel, galvanized ferrous, or solid
copper on the job.
2.2.3
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NOTE: The use of grounding plates is discouraged in
Military Handbook MIL-HDBK-1004/6, paragraph 3.3.4;
however, the use of grounding plates is an
acceptable alternative to ground rods in areas where
excessive rock and surface ledge is encountered.
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Provide grounding plates made of [copper-clad steel][iron][stainless steel]
[solid copper] conforming to UL 96.
2.2.4
Connections and Terminations
Provide connectors for splicing conductors that conform to UL 96, class as
applicable. Conductor connections can be made by clamps or welds
(including exothermic). Provide style and size connectors required for the
installation.
2.2.5
Connector Fittings
Provide connector fittings for "end-to-end", "Tee", or "Y" splices that
conform to NFPA 780.
2.2.6
Lightning Protection Components
Provide bonding plates, air terminal supports, chimney bands, clips, and
fasteners that conform to UL 96 classes as applicable.
PART 3
EXECUTION
3.1
INTEGRAL SYSTEM
Lightning protection system consists of air terminals, roof conductors,
down conductors, ground connections, grounding electrodes and ground loop
conductor. Electrically interconnect lightning protection system to form
the shortest distance to ground. Do not use nonconducting parts of the
structure as part of the building's lightning protection system. Expose
conductors on the structures except where conductors are required to be in
protective sleeves. Interconnect secondary conductors with grounded
metallic parts within the building. Make interconnections within
side-flash distances at or above the level of the grounded metallic parts.
SECTION 13100N
Page 8
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