pipe, Class 1, Grade B shall meet the following performance criteria when
subjected to salt spray testing in accordance with ASTM B 117:
a.
Exterior [_____] 1,000 hours with maximum 5 percent red rust.
b.
Interior [_____] 650 hours with maximum 5 percent red rust.]
2.2.4.1
Composite Posts
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NOTE: For High Security or for taut wire system use
steel post. Provide as alternative to PVC coated
fence posts, and use where corrosion is a problem.
Since posts are non-conductive, fence grounding
procedures need to be detailed where grounding of
the fence is required.
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Polyester resin reinforced posts shall be produced from polyester or epoxy
resin, reinforced with E-glass and filler material. Posts shall meet the
ASTM F 1043 bending strength for heavy industrial fencing, and shall be
filled with 20 MPa 2,500 psi concrete. Posts shall be protected from UV
degradation by a veil of polyester cloth impregnated with resin and an
acrylic based 0.037 mm 1.5 mil DFT coating system. The post will exhibit
no structural failure (less than 10 percent loss of strength) as a result
of exposure to moisture and UV lamps per ASTM G 23, ASTM G 26, and ASTM G 53,
(3600 hours). Posts shall be provided [green], [black], [brown] in color
to match fabric. [Provide outside diameter as specified in FS RR-F-191/3
for round steel pipe.]
2.2.5
Fencing Accessories
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NOTE: Polyvinyl chloride (PVC) coated ties shall be
specified when PVC-coated fence fabric is required.
**************************************************************************
FS RR-F-191/4. Provide wire ties constructed of the same material as the
fencing fabric. [Provide accessories with polyvinyl (PVC) coatings similar
to that specified for chain-link fabric or framework.]
2.2.6
Concrete
[ASTM C 94, using 19 mm 3/4 inch maximum-size aggregate, and having minimum
compressive strength of 20 MPa 3000 psi at 28 days.] [Provide as specified
in Section 03300N CAST-IN-PLACE CONCRETE.]
2.2.7
Grout
Provide grout of proportions one part portland cement to three parts clean,
well-graded sand and a minimum amount of water to produce a workable mix.
2.2.8
Padlocks
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NOTE: Consult station regarding padlocks. Most
stations will provide padlocks. If Contractor
furnished padlocks are required for certain security
applications, a padlock conforming to an appropriate
SECTION 02821N
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