N.Y. Comp. Codes R. & Regs. tit. 12, § 8-1.53
Guide rails.
Department of Labor
(a) The weight of steel or iron guide rails shall be not less than as given in the following table.
Weight Per Lineal Foot of Each Guide Rail
Total weight of car and load. Total weight of counterweights per pair of rails Minimum weight of each counterweight guide rail Minimum weight of each car guide rail With guide rail safeties Without guide rail safeties Above To and including 1 to 1 roping 2 to 1 roping Pounds Pounds Pounds Pounds Pounds Pounds 0 4,000 6½ 6½ 6½ 6½ 4,000 15,000 14 14 6½ 6½ 15,000 Or over 30 30 6½ 14 - (b) Where wood guides are permitted they shall be of straight grain kiln dried maple, securely fastened to the guide posts and the sectional area of each car guide rail shall be not less than five square inches with the minimum dimension not less than one and seven-eighths inches for a total weight of car and load of 6,000 pounds. For total weight in excess of 6,000 pounds, the guide rail shall have not less than seven square inches sectional area with the minimum dimension not less than two and one-half inches. The sectional area of each counterweight guide rail shall be not less than two and one-half inches with the minimum dimension not less than one and one-half inches. (See § 8-1.39.)