Sisal Rope - Strength
Sisal rope 3-strand, minimum breaking strength and safe load
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Sisal rope is made from the fibers of the sisal hemp plant - "agave sisalana".
Minimum breaking strength and safe load of sisal rope are indicated below.
| Rope Diameter | Minimum Breaking Strength | Safe Load (Safety Factor 12) |
Weight | ||||
| (in) | (mm) | (lbf) | (kN) | (lbf) | (kN) | (lbm/ft) | (kg/m) |
| 3/16 | 5 | 290 | 1,29 | 24,2 | 0,11 | 0,01 | 0,02 |
| 1/4 | 6 | 385 | 1,71 | 32,1 | 0,14 | 0,02 | 0,03 |
| 5/16 | 8 | 640 | 2,85 | 53,3 | 0,24 | 0,03 | 0,04 |
| 3/8 | 10 | 865 | 3,85 | 72,1 | 0,32 | 0,04 | 0,06 |
| 7/16 | 11 | 1120 | 4,98 | 93,3 | 0,42 | 0,05 | 0,07 |
| 1/2 | 12 | 1700 | 7,56 | 142 | 0,63 | 0,07 | 0,10 |
| 9/16 | 14 | 2210 | 9,83 | 184 | 0,82 | 0,10 | 0,14 |
| 5/8 | 16 | 2815 | 12,5 | 235 | 1,04 | 0,13 | 0,19 |
| 3/4 | 18 | 3455 | 15,4 | 288 | 1,28 | 0,16 | 0,24 |
| 7/8 | 22 | 4930 | 21,9 | 411 | 1,83 | 0,21 | 0,32 |
| 1 | 24 | 5760 | 25,6 | 480 | 2,14 | 0,27 | 0,40 |
| 1 1/16 | 26 | 6720 | 29,9 | 560 | 2,49 | 0,30 | 0,44 |
| 1 1/8 | 28 | 7680 | 34,2 | 640 | 2,85 | 0,34 | 0,51 |
| 1 1/4 | 30 | 7640 | 38,4 | 720 | 3,20 | 0,40 | 0,59 |
| 1 3/8 | 32 | 9600 | 42,7 | 800 | 3,56 | 0,46 | 0,68 |
| 1 1/2 | 36 | 11840 | 52,7 | 987 | 4,39 | 0,47 | 0,85 |
| 1 5/8 | 40 | 14440 | 64,2 | 1200 | 5,34 | 0,57 | 1,06 |
| 1 3/4 | 44 | 19960 | 75,4 | 1410 | 6,27 | 0,71 | 1,26 |
| 2 | 48 | 19840 | 88,3 | 1650 | 7,34 | 0,85 | 1,52 |
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