New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Chapter I - Industrial Board Of Appeals › Subchapter A - The Industrial Code › Part 23 - Protection In Construction, Demolition And Excavation Operations › Subpart 23-6 - Material Hoisting › Section 23-6.2 - Rigging, rope and chains for material hoists

Current through Register Vol. 46, No. 28, July 10, 2024
(a)
Hoisting rope.
(1) Types required.
Only wire rope of the improved plow steel classification
						or equivalent having a safety factor of not less than six shall be used with
						power-driven hoisting machinery, except for winchheads or capstan hoists where
						fibre rope may be used.
(2)
					 Fibre rope.
(i) Fibre rope shall be first
					 grade manila hemp or synthetic fibre. Means to prevent chafing shall be
					 provided where necessary. Proper size blocks to accommodate the rope shall be
					 used. Fibre rope shall be protected where acid or any other harmful or
					 corrosive agent or chemical is used. All fibre rope shall be stored in a dry
					 condition and in a dry place protected from the elements.
(ii) Fibre rope that is unsound in any way or
					 that shows the effects of severe wear, deterioration or abrasion shall not be
					 used and shall be removed from the job site. Frozen rope shall be thawed before
					 being used.
(3) Wire
					 rope.
(i) Wire rope shall be so handled and
					 stored as to prevent kinks and shall be maintained lubricated to prevent
					 corrosion. Wire rope that is kinked shall not be used on any material hoist.
					 Wire rope shall be discarded and replaced when more than 10 percent of the
					 total wires of any lay are broken. A rope lay is that distance measured along
					 the rope in which one strand makes a complete revolution around the rope axis.
					 Wire rope shall be discarded and replaced when the wires on the crown of the
					 strand are worn down to less than 60 percent of their original cross-sectional
					 area, when visual inspection indicates marked signs of corrosion, deterioration
					 or abrasion and when any combination of broken wires and abrasion has reduced
					 the original strength of the rope to 80 percent or less.
(ii) The ends of wire rope shall be securely
					 attached to the hoist drums and at least four turns of rope shall remain on
					 each drum at all times.
Exception:
Attachment of the rope to the hoist drum shall not be
						required on traction type hoists.
(iii) Means shall be provided to prevent
					 accidental contact with or damage to any hoisting rope. Such means shall
					 consist of substantial covering, fencing or guarding by location.
(4) Wire rope fastenings.
(i) Wire rope fastenings shall consist of
					 zinc-filled sockets, wedge sockets with at least one rope clip above each
					 socket, eye-splices with pear-shaped thimbles to fit the rope, proper size
					 thimbles with rope clips or other approved fastenings.
(ii) Where clips are used as fastenings, the
					 number used shall be in accordance with Table XVI of this Subpart.
(iii) The spacing between clips shall be at
					 least six times the diameter of the rope. The U-bolts of clips shall be placed
					 over the short ends of the ropes.
TABLE XVI ROPE CLIP REQUIREMENTS
Rope diameter
Minimum number of
								  clips
Up to and including 7/16 inch
2
Up to and including 5/8 inch
3
Up to and including 1 inch
4
Up to and including 1 1/4 inches
5
Up to and including 1 5/8 inches
6
Up to and including 1 3/4 inches
7
Up to and including 2 1/2 inches
8
Up to and including 3 inches
9