New York Codes, Rules and Regulations
Title 12 - DEPARTMENT OF LABOR
Chapter I - Industrial Board Of Appeals
Subchapter A - The Industrial Code
Part 21 - Protection Of Persons Employed At Window Cleaning-structural Requirements, Equipment And Procedures
Section 21.11 - Specifications for safety belts

(a) Approval and identification. Safety belts and terminals shall be approved by the board and shall bear the mark of approval and such other means of identification as may be prescribed by the board.

(b) Materials for straps. All material used in the manufacture of safety belt straps shall conform to the specifications and requirements of the approval resolution and only first quality material shall be used. Fabric which may be affected by mildew shall be treated with a nonacid and noncorrosive antimildew agent.

(c) Stitching and binding. Stitching shall be done with hot waxed, best quality No. 5 linen thread or heavier, and must be lock stitching. Fabric ends shall be bound or dipped to prevent unraveling.

(d) Reinforcing. Where straps are attached to terminals, leather wearing pads at least three-sixteenths inch thick shall be provided for wear.

(e) Type and dimensions of fittings and terminals. All belt terminals and all fittings that are subject to stress during use shall be drop forged. Dimensions of terminals shall conform to the dimensions shown in Figure 1:

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(f) Safety catch. An approved safety catch shall be included as part of each terminal.

(g) Material specifications for metal fittings. Safety belt terminals and other metal fittings subject to stress during use shall be of steel or any of the alloys specified for anchors in subdivision (b) of section 21.13.

(h) Manufacture of metal fittings. Fittings that are made of alloys and that may be subject to stress during use shall be manufactured in accordance with the specifications herein required for the manufacture of anchors. The finished product shall be free of imperfections and all concerns shall be properly filleted or rounded.