2.6
ACCESSORIES
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NOTE: Clips are not allowed on security fences.
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ASTM F 626. Ferrous accessories shall be zinc or aluminum coated.
[Ferrous accessories shall also be polyvinyl chloride-coated, minimum
thickness of 0.152 mm 0.006 inch, maximum thickness of 0.381 mm 0.015 inch.
Color coating of fittings shall match the color coating of the fabric.]
Truss rods shall be furnished for each terminal post. Truss rods shall be
provided with turnbuckles or other equivalent provisions for adjustment.
Barbed wire support arms shall be the [single] [V] arm type and of the
design required for the post furnished. Tie wire for attaching fabric to
rails, braces, and posts shall be 9 gauge steel wire and match the coating
of the fence fabric. [Tie wires for attaching fabric to tension wire on
high security fences shall be 1.6 mm 16 gage stainless steel. The tie
wires shall be a double loop and 165 mm (6.5 inches) 6.5 inches in length.]
Miscellaneous hardware coatings shall conform to ASTM A 153/A 153M unless
modified. [Threaded hardware shall be painted to match polyvinyl chloride
coatings.]
2.7
BARBED TAPE
Reinforced barbed tape, [double coil] [single coil], for fence toppings
shall be fabricated from 430 series stainless steel with a hardness range
of Rockwell (30N) 37-45 conforming to the requirements of ASTM A 176. The
stainless steel strip shall be 0.6 mm thick by 25 mm 0.025 inch thick by 1
inch wide before fabrication. Each barb shall be a minimum of 30.5 mm (1.2
inch) 1.2 inch in length, in groups of 4, spaced on 102 mm (4 inch) 4 inch
centers. The stainless steel core wire shall have a 2.5 mm (0.098 inch)
0.098 inch diameter with a minimum tensile strength of 9.68 MPa (140 psi)
140 psi and shall be in accordance with ASTM A 478. [Reinforced barbed
tape, single coil, for ground application shall meet the above
requirements.] [Non-reinforced barbed tape, single coil, for ground
applications shall be fabricated from 301 series stainless steel, with a
hardness range of Rockwell (30N) 50-55, in accordance with ASTM A 666. The
stainless steel strip shall be 0.6 mm thick by 31 mm 0.025 inch thick by
1.21 inches wide before fabrication. Each barb shall be a minimum of 30.5
mm (1.2 inch) 1.2 inch in length, in groups of 4, spaced on 102 mm (4 inch)
4 inch centers.] Sixteen gauge stainless steel twistable wire ties shall
be used for attaching the barbed tape to the barbed wire [and to the fence
for ground application].
2.8
CONCRETE
ASTM C 94/C 94M, using 19 mm 3/4 inch maximum size aggregate, and having
minimum compressive strength of 21 MPa 3000 psi at 28 days. Grout shall
consist of one part portland cement to three parts clean, well-graded sand
and the minimum amount of water to produce a workable mix.
2.9
PADLOCKS
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NOTE: Type P01 is key operated. Grade 6 is the top
grade commercial lock; in Option A the key is
captive in cylinder when padlock is unlocked; in
SECTION 02821A
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