Administrative Code

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Virginia Administrative Code
Title 4. Conservation And Natural Resources
Agency 25. Department of Energy
Chapter 40. Safety and Health Regulations for Mineral Mining
12/5/2021

4VAC25-40-4360. Diameter specifications.

Diameters of head sheaves and hoist drums shall conform to the following specifications:

Rope construction

Diameter of sheave and drum

Recommended

Times rope diameter

Minimum

Times rope diameter

6 x 7 classification

72

42

6 x 19

45

30

6 x 37

20

18

6 x 25 type B, flattened strand

45

30

6 x 27 type H, flattened strand

45

30

6 x 30 type G, flattened strand

45

30

18 x 7 classification

51

34

Statutory Authority

§§ 45.1-161.3 and 45.1-161.294 of the Code of Virginia.

Historical Notes

Derived from VR480-05-1.2 § 15.160, eff. July 19, 1989.

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