Sisal Ropes - Strengths
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 |
Related Topics
• Miscellaneous
Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
Related Documents
Cable Loads
Force and tension in cables with uniform loads.
Forces and Tensions in Ropes due to Angle
Reduced load capacities in ropes, cables or lines - due to acting angle.
Manila Ropes - Strength
Minimum breaking strength and safe load of manila 3-strand rope.
Nylon Ropes - Strengths
Nylon 3-strand and 8-strand rope - minimum breaking strength and safe load.
Polyester Polyolefin Ropes - Strengths
Polyester Polyolefin dual fiber 3-strand rope - minimum breaking strength and safe load.
Polyester Ropes - Strengths
Polyester 3-strand and 8-strand rope - minimum breaking strength and safe load.
Polypropylene Fiber Ropes - Strengths
Polypropylene fiber 3-strand and 8 strand rope - minimum breaking strength and safe load.
Pulleys
Pulleys, blocks and tackles.
Sisal Ropes - Strengths
Sisal rope 3-strand, minimum breaking strength and safe load.
Sisal Ropes - Strengths
Sisal rope 3-strand, minimum breaking strength and safe load.
Winches
Effort force to raise a load.
Wire Rope Slings
Sling angles and influence on capacity.
Wire Ropes - Strengths
6 strand x 19 wire (6x19) - minimum breaking strength, safe loads and weight.