Guy Wire
General Details
Guy Wire or guy-line, guy-rope, is a tensioned cable designed to add stability to a free-standing structure. such as: radio masts, wind turbines, utility poles, fire service extension ladders.
ASTM A475 Specifications For Zinc-Coated Steel Wire Strand
Physical Properties of Zinc-Coated Steel Wire Strand
| Nominal Diameter of Strand, in. (mm) |
Number of Wires in Strand | Nominal Diameter of Coated Wires in Strand (mm) |
Approximate Weight of Strand, lb/1000 ft (kg/ 304.8 m) |
Minimum Breaking Strength of Strand (kN) |
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| Utilities Grade | Common Grade | Siemens-Martin Grade | High- Strength Grade | Extra High- Strength Grade | ||||||
| 1/8 | (3.18) | 7 | 1.04 | 32 | (15) | — | 2.402 | 4.048 | 5.916 | 8.140 |
| 5/32 | (3.97) | 7 | 1.32 | 51 | (23) | — | 3.870 | 6.539 | 9.519 | 13.078 |
| 3/16 | (4.76) | 7 | 1.57 | 73 | (33) | — | 5.115 | 8.452 | 12.677 | 17.748 |
| 3/16 | (4.76) | 7 | 1.65 | 80 | (36) | 10.676 (1) | — | — | — | — |
| 7/32 | (5.56) | 3 | 2.64 | 88 | (40) | — | 6.228 | 10.409 | 15.569 | 21.796 |
| 7/32 | (5.56) | 7 | 1.83 | 98 | (44) | — | 6.850 | 11.387 | 17.126 | 24.020 |
| 1/4 | (6.35) | 3 | 3.05 | 117 | (53) | 14.012 (2) | 8.274 | 13.523 | 21.040 | 29.981 |
| 1/4 | (6.35) | 3 | 3.05 | 117 | (53) | 20.017 (3) | — | — | — | — |
| 1/4 | (6.35) | 7 | 2.03 | 121 | (55) | — | 8.452 | 14.012 | 21.129 | 29.581 |
| 9/32 | (7.14) | 3 | 3.30 | 137 | (62) | — | 9.252 | 15.035 | 23.398 | 33.362 |
| 9/32 | (7.14) | 7 | 2.36 | 164 | (74) | 20.462 (1) | 11.432 | 18.905 | 28.469 | 39.812 |
| 5/16 | (7.94) | 3 | 3.68 | 171 | (78) | 28.913 (3) | 11.076 | 18.193 | 28.246 | 40.479 |
| 5/16 | (7.94) | 7 | 2.64 | 205 | (93) | — | 14.234 | 23.798 | 35.586 | 49.820 |
| 5/16 | (7.94) | 7 | 2.77 | 225 | (102) | 26.689 (1) | — | — | — | — |
| 3/8 | (9.52) | 3 | 4.19 | 220 | (100) | 37.810 (3) | 14.813 | 24.732 | 37.187 | 52.489 |
| 3/8 | (9.52) | 7 | 3.05 | 273 | (124) | 51.155 (4) | 18.905 | 30.915 | 48.040 | 68.503 |
| 7/16 | (11.11) | 7 | 3.68 | 399 | (181) | 80.068 (4) | 25.355 | 41.591 | 64.499 | 92.523 |
| 1/2 | (12.70) | 7 | 4.19 | 517 | (234) | 111.206 (4) | 32.917 | 53.823 | 83.627 | 119.657 |
| 1/2 | (12.70) | 19 | 2.54 | 504 | (229) | — | 33.895 | 56.492 | 84.961 | 118.768 |
| 9/16 | (14.29) | 7 | 4.78 | 671 | (304) | — | 42.703 | 69.837 | 108.981 | 155.688 |
| 9/16 | (14.29) | 19 | 2.87 | 637 | (289) | — | 42.881 | 71.616 | 107.202 | 149.905 |
| 5/8 | (15.88) | 7 | 5.26 | 813 | (369) | — | 51.599 | 84.961 | 131.667 | 188.605 |
| 5/8 | (15.88) | 19 | 3.18 | 796 | (361) | — | 48.930 | 80.513 | 124.995 | 178.819 |
| 3/4 | (19.05) | 19 | 3.81 | 1 155 | (524) | — | 71.172 | 116.543 | 181.487 | 259.331 |
| 7/8 | (22.22) | 19 | 4.50 | 1 581 | (717) | — | 97.416 | 116.543 | 248.211 | 354.523 |
| 1 | (25.40) | 19 | 5.08 | 2 073 | (940) | — | 127.664 | 209.066 | 325.610 | 464.839 |
| 1 | (25.40) | 37 | 3.63 | 2 057 | (933) | — | 125.885 | 205.508 | 319.827 | 456.832 |
| 1-1/8 | (28.58) | 37 | 4.09 | 2 691 | (1 221) | — | 160.136 | 262.000 | 407.457 | 581.827 |
| 1-1/4 | (31.75) | 37 | 4.55 | 3 248 | (1 473) | — | 198.391 | 324.720 | 505.318 | 721.502 |
Nominal Diameters and Minimum Weights of Coating for Zinc-Coated Steel Wires A
| Nominal Diameter of Coated Wire in the Strand, in. (mm) | Minimum Weight of Coating, oz/ft2 (g/m2) of Uncoated Wire Surface |
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| Type 1B | Class AC | Class BD | Class CD | |
| 0.041 (1.04) | 0.15 (46) | 0.40 (122) | 0.80 (244) | 1.20 (366) |
| 0.052 (1.32) | 0.15 (46) | 0.40 (122) | 0.80 (244) | 1.20 (366) |
| 0.062 (1.57) | 0.15 (46) | 0.50 (153) | 1.00 (305) | 1.50 (458) |
| 0.065 (1.65) | 0.15 (46) | 0.50 (153) | 1.00 (305) | 1.50 (458) |
| 0.072 (1.83) | 0.15 (46) | 0.50 (153) | 1.00 (305) | 1.50 (458) |
| 0.080 (2.03) | 0.30 (92) | 0.60 (183) | 1.20 (366) | 1.80 (549) |
| 0.093 (2.36) | 0.30 (92) | 0.70 (214) | 1.40 (427) | 2.10 (641) |
| 0.100 (2.54) | 0.30 (92) | 0.70 (214) | 1.40 (427) | 2.10 (641) |
| 0.104 (2.64) | 0.30 (92) | 0.80 (244) | 1.60 (488) | 2.40 (732) |
| 0.109 (2.77) | 0.30 (92) | 0.80 (244) | 1.60 (488) | 2.40 (732) |
| 0.113 (2.87) | 0.30 (92) | 0.80 (244) | 1.60 (488) | 2.40 (732) |
| 0.120 (3.05) | 0.30 (92) | 0.85 (259) | 1.70 (519) | 2.55 (778) |
| 0.125 (3.18) | 0.30 (92) | 0.85 (259) | 1.70 (519) | 2.55 (778) |
| 0.130 (3.30) | 0.30 (92) | 0.85 (259) | 1.70 (519) | 2.55 (778) |
| 0.143 (3.63) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.145 (3.68) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.150 (3.81) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.161 (4.09) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.165 (4.19) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.177 (4.50) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.179 (4.55) | 0.40 (122) | 0.90 (275) | 1.80 (549) | 2.70 (824) |
| 0.188 (4.78) | 0.40 (122) | 1.00 (305) | 2.00 (610) | 3.00 (915) |
| 0.200 (5.08) | 0.40 (122) | 1.00 (305) | 2.00 (610) | 3.00 (915) |
| 0.207 (5.26) | 0.40 (122) | 1.00 (305) | 2.00 (610) | 3.00 (915) |
| A For intermediate sizes of wire in the strand, the weight designations are the same as for the next finer size shown in this table. B Type 1 (formerly “galvanized”) coating applies to common grade of strand only. C Class A, “extra galvanized” and “double galvanized” are equivalent terms. D Class A, Class B, and Class C coatings apply to all grades of strand. |
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Permissible Variations in Diameter of Individual Zinc- Coated Wires A
| Nominal Diameter of Coated Wires in the Strand (mm) | Permissible Variations, 6in. (mm) |
| 1.04 to 1.52 | 0.002 (0.05) |
| 1.55 to 2.29 | 0.003 (0.08) |
| 2.31 to 3.05 | 0.004 (0.10) |
| 3.07 and over | 0.005 (0.13) |
| A It is recognized that the surfaces of heavy zinc coatings, particularly those produced by hot galvanizing, are not perfectly smooth and devoid of irregularities. If the tolerances shown in Table 4 are rigidly applied to such irregularities that are inherent to the product, unjustified rejections of wire that would actually be satisfactory for use could occur. Therefore, it is intended that these tolerances be used in gaging the uniform areas of the galvanized wire. | |
Application Area:
Composition: It comprises of one or more zinc coated steel wires featuring tensile strength ranging from 35 Kg/mm2 to 180 Kg/mm2, making them suitable for every application.
Quality can be meet the ASTM A-475 or other international standards.
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