WAC 296-56-60151. Guide rails

Employers must provide a minimum of two car guide rails. They must: (1) Extend at least six inches beyond the maximum travel of the car with buffers compressed. (2) Be securely fastened to a vertical supporting member for the full length of elevator travel. (3) Be not less than one and one-half inch by one and one-half inch vertical grain fir or equivalent, one-quarter inch by two inch by two inch angle iron or equivalent. (4) Not vary more than three-sixteenths inch thickness on brake surfaces for wood guide rails. (5) Be secured to resist more than one-half inch total deflection on car safety application and resist a 250 pound horizontal thrust.