Description
Anchor Lines:
Deteriorating Forces :
- Heavy Loads in six degree of freedom
- Cyclic loads (Tension & Bending)
- Corrosion
- Torque
Properties required:
- High Strength
- Structural Rigidity
- Resistance to abrasion & fatigue
- High elasticity to absorb shock load
- Protection for corrosion
Deteriorating Forces:
- Abrasion due to Drum/Sheave under heavy load.
- Fatigue
- Corrosion
Properties required : Ropes with optimum balance between
- Toughness ( Ruggedness) and abrasion resistance
- Flexibility and fatigue resistance
| Construction | Nominal Rope Diameter | |
|---|---|---|
| Rope | (in.) | (mm) |
| 8x36SW | 2 to 2-3/4 | 52 to 68 |
| 8x49SW | 2-7/8 to 3-7/8 | 71 to 96 |
| 8x52SW | 4-5 | 103 to 127 |
| Nominal Rope Diameter | Approx. Mass | Minimum Breaking Force | |||||
|---|---|---|---|---|---|---|---|
| (lb/ft) | (kg/m) | ||||||
| (in.) | (mm) | air | submerged | air | submerged | MT | KN |
| 2.0 | 8.00 | 6.75 | 11.9 | 10.04 | 234 | 2295 | |
| 52 | 8.33 | 7.06 | 12.4 | 10.5 | 245 | 2402 | |
| 2-1/8 | 54 | 9.01 | 7.59 | 13.4 | 11.3 | 265 | 2599 |
| 56 | 9.68 | 8.13 | 14.4 | 12.1 | 285 | 2795 | |
| 2-1/4 | 58 | 10.15 | 8.54 | 15.1 | 12.7 | 297 | 2912 |
| 2-3/8 | 60 | 11.2 | 9.41 | 16.6 | 14.0 | 327 | 3207 |
| 2-1/2 | 64 | 12.4 | 10.5 | 18.5 | 15.6 | 366 | 3589 |
| 2-5/8 | 67 | 13.8 | 11.6 | 20.5 | 17.3 | 404 | 3962 |
| 2-3/4 | 15.1 | 12.8 | 22.5 | 19.0 | 444 | 4354 | |
| 71 | 15.6 | 13.2 | 23.2 | 19.6 | 458 | 4491 | |
| 2-7/8 | 16.5 | 13.9 | 24.5 | 20.7 | 484 | 4746 | |
| 74 | 16.9 | 14.3 | 25.2 | 21.3 | 497 | 4874 | |
| 3.0 | 74 | 17.9 | 15.1 | 26.7 | 22.5 | 527 | 5168 |
| 77 | 18.3 | 15.5 | 27.3 | 23.0 | 538 | 5276 | |
| 3-1/8 | 80 | 19.5 | 16.5 | 29.0 | 24.5 | 572 | 5609 |
| 3-1/4 | 83 | 21.1 | 17.8 | 31.4 | 26.5 | 619 | 6070 |
| 3-3/8 | 22.7 | 19.2 | 33.8 | 28.5 | 667 | 6541 | |
| 87 | 23.4 | 19.8 | 34.8 | 29.4 | 687 | 6737 | |
| 3-1/2 | 90 | 24.5 | 20.6 | 36.4 | 30.7 | 717 | 7031 |
| 3-5/8 | 92 | 25.6 | 21.6 | 38.1 | 32.1 | 721 | 7070 |
| 3-3/4 | 96 | 27.5 | 23.2 | 40.9 | 34.5 | 774 | 7590 |
| 3-7/8 | 29.3 | 24.7 | 43.6 | 36.8 | 806 | 7904 | |
| 4 | 31.3 | 26.3 | 46.5 | 39.2 | 859 | 8423 | |
| 103 | 32.1 | 27.0 | 47.7 | 40.2 | 883 | 8659 | |
| 4-1/8 | 105 | 33.2 | 28.0 | 49.4 | 41.7 | 914 | 8963 |
| 4-1/14 | 108 | 35.3 | 29.8 | 52.5 | 44.3 | 971 | 9522 |
| 4-1/2 | 115 | 39.5 | 33.3 | 58.8 | 49.6 | 1087 | 10659 |
| 4-3/4 | 121 | 44.1 | 37.2 | 65.6 | 55.3 | 1213 | 11895 |
| 5 | 127 | 48.8 | 41.1 | 72.6 | 61.2 | 1342 | 13160 |
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