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Guy Strand
Messengers
Span Wires |
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1x7, 1x19, 1x37 |
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Diameter
inch |
Number
of
Wires in
Stand |
Diameter
of
Coated Wires in
strand, inch |
Minimum
Breaking strength of strand, ibf |
Approx.
W't of Strand,
Lb/1000ft |
Utilities
Grade |
High Strength
Grade |
Extra-High
Strength Grade |
| 3/16 |
7 |
0.062 |
- |
2,850 |
3,990 |
73 |
| 3/16 |
7 |
0.065 |
2,400 |
- |
- |
80 |
| 7/32 |
3 |
0.104 |
- |
3,500 |
4,900 |
88 |
| 7/32 |
7 |
0.072 |
- |
3,850 |
5,400 |
98 |
| 1/4 |
3 |
0.120 |
3,150 |
4,730 |
6,740 |
117 |
| 1/4 |
3 |
0.120 |
4,500 |
- |
- |
117 |
| 1/4 |
7 |
0.080 |
- |
4,750 |
6,650 |
121 |
| 9/32 |
3 |
0.130 |
- |
5,260 |
7,500 |
137 |
| 9/32 |
7 |
0.093 |
4,600 |
6,400 |
8,950 |
164 |
| 5/16 |
3 |
0.145 |
6,500 |
6,350 |
9,100 |
171 |
| 5/16 |
7 |
0.104 |
- |
8,000 |
11,200 |
205 |
| 5/16 |
7 |
0.109 |
6,000 |
- |
- |
225 |
| 3/8 |
3 |
0.165 |
8,500 |
8,360 |
11,800 |
220 |
| 3/8 |
7 |
0.120 |
11,500 |
10,800 |
15,400 |
273 |
| 7/16 |
7 |
0.145 |
18,000 |
14,500 |
20,800 |
399 |
| 1/2 |
7 |
0.165 |
25,000 |
18,800 |
26,900 |
517 |
| 1/2 |
19 |
0.100 |
- |
19,100 |
26,700 |
504 |
| 9/16 |
7 |
0.188 |
- |
24,500 |
35,000 |
671 |
| 9/16 |
19 |
0.113 |
- |
24,100 |
33,700 |
637 |
| 5/8 |
7 |
0.207 |
- |
29,600 |
42,400 |
813 |
| 5/8 |
19 |
0.125 |
- |
28,100 |
40,200 |
796 |
| 3/4 |
19 |
0.150 |
- |
40,800 |
58,300 |
1,155 |
| 7/8 |
19 |
0.177 |
- |
55,800 |
79,700 |
1,581 |
| 1 |
19 |
0.200 |
- |
73,200 |
104,500 |
2,073 |
| 1 |
37 |
0.143 |
- |
71,900 |
102,700 |
2,057 |
| 1 1/8 |
37 |
0.161 |
- |
91,600 |
130,800 |
2,691 |
| 1 1/4 |
37 |
0.179 |
- |
113,600 |
162,200 |
3,248 |
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| Note :The utilities grade is used principally
by communication and power and light industries.
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Permissible Variations in
Diameter of Individual Zinc-coatrd Wires |
Nominal Diameter of coated wires in the strand
inch (mm) |
Permissible variations, plis and minus
inch (mm) |
| 0.041 - 0.060 (1.04 - 1.52) |
0.002 (0.05) |
| 0.061 - 0.090 (1.55 - 2.29) |
0.003 (0.08) |
| 0.091 - 0.120 (2.31 - 3.05) |
0.004 (0.10) |
| 0.121 and over (3.07 and over) |
0.005 (0.13) |
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Minimum Elongation of General
Strand |
| Grade |
Minimum Elongation in 610mm |
| High Strength |
5 % |
| Extra - High Strength |
4 % |
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