Sisal Rope Strength
Reference data and engineering information about sisal rope strength for mechanics applications.
sisalropestrength
Overview
Engineering reference data for Sisal Rope Strength in mechanics.
Key Formulas
Newton's Second Law
Force = mass × acceleration.
Work
Work = force × displacement × cos(angle).
Kinetic Energy
Energy of motion.
Potential Energy
Gravitational potential energy.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Force | N | |
| Mass | kg | |
| Acceleration | m/s² | |
| Velocity | m/s |
Sisal Rope Strength Data
19 rows
Diameter(in) | Diameter(mm) | Minimum Breaking Strength(lbf) | Minimum Breaking Strength(kN) | Safe Load(lbf) | Safe Load(kN) | Weight(lbm/ft) | Weight(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 | 0.1 |
| 9/16 | 14 | 2210 | 9.83 | 184 | 0.82 | 0.1 | 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 | 0.4 |
| 1 1/16 | 26 | 6720 | 29.9 | 560 | 2.49 | 0.3 | 0.44 |
| 1 1/8 | 28 | 7680 | 34.2 | 640 | 2.85 | 0.34 | 0.51 |
| 1 1/4 | 30 | 7640 | 38.4 | 720 | 3.2 | 0.4 | 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 |
Source: engineeringtoolbox.com
Safe Load Calculation
The safe working load is calculated by applying a safety factor to the rope's minimum breaking strength. The standard safety factor for general-purpose sisal rope is *12.
For example, a 1/2" (12mm) sisal rope with a minimum breaking strength of 1,700 lbf has a safe load of:
Material Properties
Sisal rope is manufactured from the natural fibers of the Agave sisalana plant. Key properties include:
- Natural Fiber: Provides good grip and flexibility.
- Biodegradable: An environmentally friendly choice for temporary applications.
- Moisture Sensitivity: Strength decreases when wet; it should be dried properly after exposure to water.
- Applications: Commonly used for agricultural tasks, marine fenders, and decorative purposes where high-strength synthetic rope is not required.