RR-W-410 Wire Rope And StrandThis specification covers wire ropes and wire seizing strands see 6.1. This specification does not include all types, classes, constructions, and sizes of wire rope and strand that are commercially available, but it is intended to cover the more common types, classes, constructions, and sizes that are suitable for federal government use.

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RR-W-410G

3.11.6 Type I, general purpose, class 6, 6 by 91 (see figure 26 for typical construction).

3.11.6.1 Material. Material shall be carbon steel as specified (see 3.1 and 6.2(r-1)).

3.11.6.1.1 Finish. Wire rope of improved plow steel or extra improved plow steel shall be of bright (uncoated) or zinc coated (galvanized) wire as specified (see 3.3.5 and 6.2(r-2)).

3.11.6.1.2 Cores. Wire ropes of improved plow steel shall have either fiber core, wire strand core, or IWRC as specified (see 3.2 and 6.2(r-3)). Wire ropes of extra improved plow steel shall be IWRC in accordance with 3.2.3.

3.11.6.1.3 Fabrication. Wire ropes shall be fabricated as specified (see 3.4 and 6.2(r-4)).

3.11.6.1.4 Lay. Unless otherwise specified (see 6.2(r-5)), the lay shall be right regular lay in accordance with 3.4.4.1.

3.11.6.1.5 Dimensions, weight, and strength. Dimensions, weight, and strength requirements shall be as specified in tables XVII, XVIII, and XIX.

3.11.6.2 Type I, general purpose, class 6, construction 1, 6 by 91 (4 operations). Wire rope grades improved plow steel and extra improved plow steel shall be in accordance with the requirements specified herein.

3.11.6.2.1 Wire ropes shall have 1 core and 6 strands of not less than 79 nor more than 98 wires each, totaling not less than 474 nor more than 588 wires in the strands. This construction is not furnished in lang lay and it is not furnished preformed. This construction shall not be required in sizes smaller than 2-1/2 inches.

3.11.6.2.2 Each strand shall have 1 center strand of 19 to 26 wires constructed in accordance with

3.11.2.3.2, 3.11.2.4.2, 3.11.2.5.2, or 3.11.2.6.2. The third layer from the outside shall have not less than 14 nor more than 18 wires. The second layer from the outside shall have not less than 20 nor more than 24 wires. The outer layer shall have not less than 26 nor more than 30 wires. Wires in the third layer from the outside shall be of one diameter. Wires in the second layer from the

outside shall be of one diameter. Wires in the outer layer shall be of one diameter. Each strand shall be fabricated in four operations.

3.11.6.3 Type I, general purpose, class 6, construction 2, 6 by 91 (3 operations). Wire rope grades improved plow steel and extra improved plow steel shall be in accordance with the requirements specified herein.

3.11.6.3.1 Wire ropes shall have 1 core and 6 strands of not less than 79 nor more than 110 wires each, totaling not less than 474 nor more than 660 wires in the strands. This construction is not furnished in lang lay and it is not furnished preformed. This construction shall not be required in sizes smaller than 2-1/2 inches.

3.11.6.3.2 Each strand shall have 1 center strand of 19 to 26 wires constructed in accordance with

3.11.2.3.2, 3.11.2.4.2, 3.11.2.5.2, or 3.11.2.6.2. The third layer from the outside shall have not less