RR-F-191/1F
3.8 Type V, Zinc-5% aluminum-mischmetal alloy coated steel wire (Zn-5Al-MM). The coated steel wire shall conform to the requirements of ASTM F1345, Class 1 (minimum coating weight of 0.60 ounces per square foot).
3.9 Mesh size. The mesh size for fabric shall be one of the sizes selected (see 1.2). The mesh size shall be the inside measurement of the diamond shape of the tensioned fabric as determined in 4.3.2. Tolerance for mesh size is ± 1/8 of an inch.
3.10 Diamond count. Unless otherwise specified (see 6.1), the diamond count shall be the manufacturer's standard. All diamond counts shall be consistent within a lot.
3.11 Selvage. Unless otherwise specified (see 6.1), the fabric will be furnished with standard selvages as follows:
(a) Fabric up to and including 60 inches high with 2-inch mesh shall be knuckled at the top and bottom selvages.
(b) Fabric over 60 inches high 2-inch mesh shall be twisted on the top selvage and knuckled on the bottom selvage.
(c) Fabric of all heights with 1-inch or 1-3/4 inch mesh shall be knuckled at the top and bottom selvages.
When specified (see 6.1), fabric shall be provided with one of the following selvage types: (a) Knuckled at both selvages.
(b) Knuckled at one selvage and twisted at the other.
(c) Twisted at both selvages, except on fabric with 1-inch mesh.
3.11.1 Knuckled. Loops of knuckled selvage shall be closed or nearly closed with a space not exceeding the diameter of the wire.
3.11.2 Twisted. Wire shall be twisted in a closed helix of 1-1/2 machine turns
equivalent to three full twists, and cut at an angle to provide sharp barbs. The wire ends beyond the twist shall be at least 1/4-inch long (see 4.3.3).
3.12 Fabric height. Fabric height shall be of the selected ± 1 inch (see 1.2 and 6.1), as determined by 4.3.4. Tolerance for fabric height is ± 1 inch.
3.13 Fabric length. Unless otherwise specified (see 6.1), the standard length of fabric roll shall be 50 linear feet ± 1 percent as determined by 4.3.5. Each roll of fabric shall be a one-piece length.
4. QUALITY ASSURANCE PROVISIONS.
4.1 Responsibility for inspection. (See RR-F-191/GEN)
4.2 Sampling. (See section 6 of RR-F-191/GEN)
4.3 Examination. Examine fabric for defects listed in table II.
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