§ 7.374. Ropes.

 (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 speed in 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

---

No part of the information on this site may be reproduced for profit or sold for profit.

This material has been drawn directly from the official Pennsylvania Code full text database. Due to the limitations of HTML or differences in display capabilities of different browsers, this version may differ slightly from the official printed version.