CAST STEEL ROPES FOR INCLINES
Six strands of 7 wires each—hemp center
| Diam. of Rope in Inches | Diam. of Sheaves or Drums in Feet, Showing Percentage of Life for Various Diams. | ||||||
|---|---|---|---|---|---|---|---|
| 100 % | 90 % | 80 % | 75 % | 60 % | 50 % | 25 % | |
| 1 1⁄2 | 16 | 14 | 12 | 11 | 9 | 7 | 4.75 |
| 1 3⁄8 | 14 | 12 | 10 | 8.5 | 7 | 6 | 4.5 |
| 1 1⁄4 | 12 | 10 | 8 | 7.25 | 6 | 5.5 | 4.25 |
| 1 1⁄8 | 10 | 8.5 | 7.75 | 7 | 6 | 5 | 4 |
| 1 | 8.5 | 7.75 | 6.75 | 6 | 5 | 4.5 | 3.75 |
| 7⁄8 | 7.75 | 7 | 6.25 | 5.75 | 4.5 | 3.75 | 3.2 |
| 3⁄4 | 7 | 6.25 | 5.5 | 5 | 4.25 | 3.5 | 2.75 |
| 5⁄8 | 6 | 5.25 | 4.5 | 4 | 3.25 | 3 | 2.5 |
| 1⁄2 | 5 | 4.5 | 4 | 3.5 | 2.75 | 2 | 1.75 |