Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 25 - LIFTING AND CARRYING APPARATUS
Subchapter B - CRANES, BOOMS AND HOISTS
SPECIAL REQUIREMENTS FOR NEW INSTALLATIONS
Section 25.101 - Construction

(a) Cranes shall be of what is known as "all metal construction." No cast iron may be used in parts subject to tension except in drums, trolley sides, bearings, brackets and brake shoes.

(b) Bolts subject to stress shall be of the through type, and all bolts shall be equipped with approved protection so that the bolt will not work loose or nuts work off.

(c) Outside crane cages shall be enclosed. There shall be windows on three sides of the cage. The window in the front, and the side opposite the door shall be the full width of the cage.