Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 7 - ELEVATORS, LIFTS, ESCALATORS, DUMBWAITERS, HOISTS ANDTRAMWAYS
Subchapter L - HOISTS
PERSONNEL HOISTS
Section 7.374 - Ropes
Universal Citation: 34 PA Code ยง 7.374
Current through Register Vol. 54, No. 38, September 21, 2024
(a) The minimum number of hoisting ropes used shall be three for traction hoists and two for drum-type hoists.
(b) The minimum diameter of hoisting and counterweight wire ropes shall be 1/2-inch.
(c) Minimum factors of safety for suspension shall conform with the following
WIRE ROPES
| Rope speedin feet per minute: | Minimum factor of safety |
| 50 | 7.60 |
| 75 | 7.75 |
| 100 | 7.95 |
| 125 | 8.10 |
| 150 | 8.25 |
| 175 | 8.40 |
| 200 | 8.60 |
| 225 | 8.75 |
| 250 | 8.90 |
| 300 | 9.20 |
| 350 | 9.50 |
| 400 | 9.75 |
| 450 | 10.00 |
| 500 | 10.25 |
| 550 | 10.45 |
| 600 | 10.70 |
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