Technical Notes: Drum Freeboard Standards
ANSI A10.5-1992, para. 14.5.1, page 9: Safety Requirements for Material Hoists |
+/= 2 inches |
ANSI A10.22-1990, para. 4.9, page 10: Rope-Guided & Nonguided Worker's Hoists - Safety Requirements |
+/= 2 inches |
ANSI B30.5a-1990, para. 5-1.3.2 (a)(2)(c): |
+/= 1/2 inch |
ANSI B30.7-1989, para. 7-1.2.2 (c)(3): Base Mounted Drum Hoists, page 11. |
+/= 1/2 inch |
ANSI B30.7-1989, para. 7-3.2.2 (g): Base Mounted Drum Hoists, page 20. |
+/= 1/2 inch |
American Bureau of Shipping (ABS) |
+/= 2 rope dia. |
Construction Safety Association of Ontario |
+/= 2 inches (1) |
Det Norske Veritas (DNV) |
+/= 2.5 rope dia. |
Norwegian Maritime Directorate |
2.5 rope dia.(3) |
Society of Automotive Engineers (SAE) |
+/= 0.7 rope dia. |
(1) or 2 rope diameters - whichever is greater.
(2) or 2 rope diameters - whichever is greater.
(3) per BeeBe International, Inc. memo #1075-4 of 11/15/82