Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
Construction Safety and Health Standard
Part 15 - EXCAVATORS, HOISTS, ELEVATORS, HELICOPTERS, AND CONVEYORS
PERSONNEL HOISTS AND ELEVATORS - ADDITIONAL REQUIREMENTS
Section R. 408.41563 - Bridge tower construction personnel hoists

(1) A personnel hoist that is used in bridge tower construction shall be approved by a registered professional engineer and installed in accordance with R 408.41560(2).

(2) When a hoist tower is not enclosed, the car or hoist platform shall be totally enclosed or caged on all sides for the full height between the floor and the overhead protective covering with not less than 3/4-inch mesh of no. 14 U.S. gauge wire or equivalent. The hoist car enclosure shall include the required gates for loading and unloading.

(3) An employer shall ensure that hoists are inspected for defects, serviced, and maintained on a weekly basis, and repaired as necessary. If the hoisting equipment is exposed to winds of more than 35 miles per hour, authorized personnel must inspect and repair the hoisting equipment if necessary before reuse.