highly corrosive environments.
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NOTE: Choose core wire gage appropriate for the
design. Gages will not be the same for all
materials. Polyvinyl chloride (PVC) coating may be
specified for other than security purposes when
aesthetics are of prime importance and the
additional cost is justified. There are different
PVC-coated fabrics on the market. Some ways in
which they may vary are: The methods of applying
PVC coating, wall thickness of PVC coating, adhesion
of PVC coating to wire, and cost. Take these
factors into consideration when selecting a fence
fabric for different environmental applications. PVC
coating of fencing for certain security applications
and fencing requiring grounding must be designed and
specified very carefully.
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NOTE: For projects located on the Naval Base
Complex, Norfolk, Virginia, fencing which is not
adequately screened by landscaping shall be PVC
coated. PVC coasting shall be dark brown in color.
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FS RR-F-191/1; Type [I, zinc-coated steel, [_____] gage] [II,
aluminum-coated steel, [_____] gage] [III, aluminum alloy, [_____] gage]
[or] [IV, polyvinyl chloride (PVC) coated over zinc- or aluminum-coated
steel, [_____]-gage core wire size]. Mesh size, 50 mm 2 inches. Provide
selvage [knuckled at one selvage and twisted and barbed at the other]
[twisted and barbed at both selvages] [knuckled at both selvages]. Height
of fabric, as indicated.
2.2.2
Gates
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NOTE: The gate frames and intermediate braces
indicated are adequate for gate sizes less than or
equal to 2.4 m 8 feet high and 4.3 m 14 feet wide.
Gate configurations larger than 2.4 m 8 feet high and
4.3 m 14 feet wide shall require special design
consideration.
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FS RR-F-191/2; Type [I, single swing] [II, double swing] [III, single
cantilever sliding, wheel sliding gate] [IV, double cantilever sliding] [V,
single overhead sliding] [VI, double overhead sliding] [VII, vertical lift]
[VIII, special]. Shape and size of gate frame, [as indicated] [_____].
Framing and bracing members, [round] or [square] of [steel] [or] [aluminum]
alloy. [Steel member finish, [zinc-coated] [or] [PVC-coated over zinc- or
aluminum-coated steel].] Gate frames and braces of minimum sizes listed in
FS RR-F-191/3 for each Class and Grade except that steel pipe frames shall
be 48 mm 1.90 inches od, 3 mm 0.120 inches minimum wall thickness and
aluminum pipe frames and intermediate braces shall be 47.5 mm 1.869 inches
od, 1.4 kg per meter 0.940 lb/ft of length. Gate fabric, as specified for
fencing fabric.
[Barbed wire top on gate, as specified herein.] Coating
SECTION 02821N
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