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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 296. Labor and Industries, Department of |
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Chapter 296-96. Safety regulations and fees for all elevators, dumbwaiters, escalators and other conveyances. |
Section 296-96-23243. What is the minimum rated load for freight elevators?
Latest version.
- The minimum rated load for freight elevators in pounds must be based on the weight and class of the load to be handled but must in no case be less than the minimum specified in this section for each class of loading based on the inside net platform area. Freight elevators must be designed for one of the following classes of loading:(1) Class A - General freight loading: Where the load is distributed, the weight of any single piece of freight or of any single hand truck and its load is not more than one-quarter the rated load of the elevator, and the load is handled on and off the car platform manually or by means of hand trucks. For this class of loading, the rated load must be based on not less than 50 lb./ft. squared of inside net platform area.(2) Class B - Motor vehicle loading: Where the elevator is used solely to carry automobile trucks or passenger automobiles up to the rated load of the elevator. For this class of loading, the rated load must be based on not less than 30 lb./ft. squared of inside net platform area.(3) Class C - Industrial truck loading: Where the load is carried in transit or is handled on and off the car platform by means of power industrial trucks or by hand trucks having a loaded weight more than one-quarter the rated load of the elevator. For this class of loading the following requirements apply:(a) The rated load must be based on not less than 50 lb./ft. squared of inside net platform area;(b) The weight of the loaded industrial truck must not exceed the rated load of the elevator;(c) The weight of the loaded industrial truck plus any other material carried on the elevator must not exceed the rated load when the industrial truck is also carried;(d) During loading and unloading, the load on the elevator must in no case exceed 150 percent of the rated load, and where this load exceeds the rated load, the capacity of the brake and the traction relation must be adequate to safely sustain and level at least 150 percent of the rated load.NOTE: When the entire rated load is placed on the elevator by the industrial truck in increments, the load imposed on the car platform while the last increment is being loaded or the first increment unloaded will exceed the rated load by the weight of the empty industrial truck.