16050-4
BASIC MATERIALS AND METHODS
Specifications WW-C-581E, ANSI Standard C80.1, ANSI Standard C80.5
UL Standard #6 and NEMA RN1-2005.
The PVC coated rigid galvanized steel (RGS) conduit shall comply with the
below listed specifications without exceptions allowed. PVC coated rigid
galvanized steel (RGS) conduit shall be hot dipped galvanized both
internally & externally. The PVC coated rigid galvanized (RGS) conduit
shall have hot dipped galvanized threads. The external PVC coating shall
be a nominal 40 mils of external PVC coating and 2 mils of blue interior
urethane coating. The PVC coating shall applied by the same manufacturer
of the hot dipped galvanized rigid steel (RGS) conduit.
Conduit bodies and fittings for PVC coated rigid galvanized steel (RGS)
conduit shall be from the same manufacturer as the PVC coated ngid
galvanized steel (RGS) conduit. Conduit bodies shall be coated on the entire
body both internally and externally with 2 mil of blue urethane and exterior
coated with 40mil of PVC coating.
All conduit, conduit bodies, connectors, support systems and accessories in
the corrosive areas, above grade or below grade, shall be coated as specified.
The thickness of the coating is to be a nominal 40 mils except where the
configuration or application of the unit dictates otherwise.
During the manufacturing of the PVC coated rigid galvanized steel (RGS)
conduit, the factory applied hot dipped galvanized coating of both the
internal and external (RGS) conduit shall not be disturbed in any fashion
prior to the application of PVC coating being applied as per UL 6. The PVC
coated rigid galvanized steel (RGS) conduit shall comply with all UL
listings providing the hot dipped galvanized coating as the primary means
of protection of corrosion protection for the conduit, and the PVC coating
shall be listed as a secondary means of corrosion protection as required by
UL 6 and NEMA RN-1-2005.
. Every female opening shall have a plastic sleeve extending one pipe
diameter or 2", whichever is less, beyond the opening. The inside diameter
of the sleeve shall be the same as the outside diameter of the pipe used with
it. The wall thickness of the sleeve shall be the same as the plastic coating.
Fittings and Accessories:
i. Right angle beam clamps and U-bolts will be provided with PVC
encapsulated nuts that cover all exposed parts of the threads.
ii. _U-bolts will be sized to snugly fit the nominal 40 mil coated conduit.
iii. The screw heads on Form 8 condulets shall be stainless steel
encapsulated by the same manufacturer. All conduit bodies used in
wash down, wet or outdoor applications shall be NEMA 4X rated. .
iv. Couplings shall have longitudinal ribs 40 mils in thickness to protect
them from wrenches or channel-locks.
v. All coated conduit and fittings must be installed wherever possible
by a certified trained installer using a tool available from the
manufacturer for the use intended in order to protect the PVC
coating.
The interior coating shall be applied in such a manner so as to allow field
bending without cracking or flaking of the interior coating.
13089K
