Hoistway Structures 240

Familiarizes apprentices with car types, car assembly, car frame components, and car frame installation procedures; as well as counterweight theory, counterweight components, and counterweight assembly.
Identifies different types of safeties and describes their operation. Explains why compensating ropes and chains are used. Calculates the amount of weight needed to counterbalance an elevator car. Explains and describes the purpose and operation of a seismic derailment system.