RR-F-191I4F
3.5 Item 11, barbed wire support arms. Barbed wire support arms shall be of the following types as specified (see 6.1).
(a) Single- arm, for three barbed wire strands. (b) V-arms, for six barbed wire strands.
(c) A-arms, for five barbed wire strands.
When installed, the barbed wire support arms shall project at an angle of 45 ± 5 degrees from the plane of the fence line and the outer strand of barbed wire shall be positioned 12 ± 2- inches horizontally from the fence line. Intermediate strands of barbed wire shall be uniformly spaced between the strand on the end of the support arm and the fabric. All support arms shall be fitted with clips or slots for attaching the barbed wire to the support arm. Support arms shall be capable of withstanding a load of 250 pounds (lbs) when tested in accordance with
4.4.3.
3.6 Item 12, miscellaneous accessories. Unless otherwise specified (see 6.1) miscellaneous items, such as bolts, nuts, and washers shall be galvanized steel or aluminum alloy at the manufacturer's option.
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection. (See RR-F-191IGEN)
4.2 Sampling. (See section 6 of RR-F-191IGEN)
4.3 Examination: Examine accessories for defects listed in table I.
TABLE I. Classification of defects, posts, rails, and braces.
Defects Major Minor
Item not as specified. x Tension wire not as specified. x Color not as specified. x Dimensions not within tolerance where applicable. x Barbed wire not as specified. x
Barbed wire support arms not as specified. x
Damage or defects affecting function or serviceability. x
Damage or defects not affecting function or serviceability. x
4.3.1 Thickness of bands and diameter wire. Determine the thickness using a suitable micrometer. Measure diameter of wire by taking the average of two dimensions at right angles to each other.
4.4 Test methods.
4.4.1 Wire ties and clips. Bend wire from which ties and clips are formed through an angle of 180 degrees (0) on a mandrel having the same diameter as the wire under test to determine conformance to requirements of 3.4.4.
4.4.2 Weight and thickness of metallic coatings.
4.4.2.1 Weight of zinc and Zn-5Al-MM coating. Determine weight of zinc coating in accordance with ASTM A90 (see 3.4.7.1 and 3.4.9.2).
4.4.2.2 Weight of aluminum coating. Determine weight of aluminum coating in accordance with ASTM A428 (see 3.4.7.1 and 3.4.9.2).
4.4.2.3 Thickness of aluminum coating. Determine thickness of aluminum by any one of the following methods (see 3.4.7.1 and 3.4.9.2).
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business