STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

578 Drilling and Well Completions
Table 4-25
6x19, 6x37, and 6x61 Construction Mooring Wire Rope,
Independent Wire-Rope Core [12]
11 in. mm lb/fi
- =
1
1%
1%
1%
1%
1%
1%
1%
2
2%
2%
2K
2%
26
29
32
35
38
42
45
48
52
54
50
60
64
1.89
2.34
2.89
3.50
4.16
4.88
5.67
6.50
7.39
8.35
9.36
10.4
11.6
q
2% 61 12.8
2% 71 14.0
2% 74 15.3
3 17 16.6
3K 80 18.0
3% 83 19.5
3% 87 21.0
3% 90 22.7
3% 96 26.0
4w 4 103 29.6
4 IL 109 33.3
115 37.4
4% 122 41.7
- -
NO7E: Far rests see Paragraph titled “Acceptance.”
-
4 5 6 7 8 9 10 11
1 Nominal Strength
Approximate
Galvanized
Maan
-
I
-
Bright
Metric
kN ronnes lb kN
--
-
414 42.2 95.800 426
520 53.1 119.000 5.30
143.800 640 65.2 145.000 646
172.800 769 18.4 174.000 773
913 93.1 205.000 911
1.060 108 250.000 1.110
1.2.10 125 287.000 1.280
1.390 142 927.000 1.450
1.590 162 389.000 1.640
1.770 180 413.000 1.840
13.9 444,IXU 1.980 2M 461.000 2050
15.5 I 493.200 2.190 224 528.000 2,350
170 543.600 2.420 241 604.000 2.690
2.650 270 658.000 2.930
9.890 295 736.000 3.270
3,140 320 796.000 3.640
3.400 341 856.000 5.810
9.670 374 920,000 4.090
3.940 402 984.ooO 4.980 447
4.240 432 1.074.000 4.780 4x7
4,520 460 1,144,000 5.090 519
5.060 616 1,290.000 6.740 MS
5.710 582 1.466.000 6.520 665
6.400 662 1,606,000 7.140 728
7,110 725 1.774.000 1,890 805
7.860
-
801 1.976.000 8.790 896
-
-
-
Metric
Ponnes
-
43.5
64.1
65.9
78.8
62.9
113
180
I48
167
188
209
239
274
299
333
361
389
417
-
Torpedo Lines
Torpedo lines shall be bright (uncoated) or drawn-galvanized, and shall be
right, regular lay. The lay of the finished rope shall not exceed eight times the
nominal diameter.
Torpedo lines shall be made of five strands of five wires each, or five strands
of seven wires each. The strands of the 5x5 construction shall have one center
wire and four outer wires of one diameter, fabricated in one operation. The
five strands shall be laid around one fiber or cotton core (see Figure 4-66). The
strands of the 5x7 construction shall have one center wire and six outer wires
of one diameter, fabricated in one operation. The strands shall be laid around
one fiber or cotton core (see Figure 467).
The four outer wires in each strand of the 5x5 construction [both bright
(uncoated) and drawn-galvanized] and all the wires in each strand of the 5x7
construction [both bright (uncoated) and drawn-galvanized] shall have the
breaking strengths as in Tables 4-15 and 4-16 for the specified grade and
applicable wire size. The center wire of the 5x5 construction shall be hard drawn
or annealed and shall not be required to meet the minimum breaking strength
specified for the outer wires (the center wire represents about 5% of the total
metallic area of the rope and is substantially a filler wire).
The nominal strength of torpedo lines shall be as specified in Tables 4-26
and 4-27. When testing finished ropes to their breaking strength, suitable sockets