Section 2.9 Machinery and Sheave Beams, Supports, and Foundations
Machines, machinery, sheaves, and hitches shall be supported by overhead beams, structural floors, structural walls, or guide rails.
(a) the load resting on the beams and supports, which shall include the complete weight of the machine, sheaves, controller, governor, and any other equipment, together with that portion, if any, of the machinery space, machine room, control space, or control room floor supported thereon
(b) 2 times the sum of the tensions in all wire ropes supported by the beams, floors, and their supports with rated load in the car
NOTE [188.8.131.52(b)]: These tensions are doubled to take care of accelerations and decelerations.
184.108.40.206 Foundations, Beams, and Floors for Machinery and Sheaves Not Located Directly Over the Hoistway
(a) secondary or deflecting sheaves of traction elevators
(b) devices and their accessories for limiting or retarding car speed
(a) Structural Steel. AISC Book No. S326 or CAN/CSA-S16.1, whichever is applicable (see Part 9).
2.9.5 Allowable Deflections of Machineiy and Sheave Beams, Their Supports, and Any Support Members Loaded in Bending That Transmit Load to Guide Rails or Structural Walls
The allowable deflections of machinery and sheave beams, their immediate supports, and any support members loaded in bending that transmit load to guide rails or structural walls under static load shall not exceed 1/1666 of the span.
Machinery and sheave beams, supports, any support members that transmit load to guide rails or structural walls, and any fastenings subject to forces due to the application of the emergency brake (see 2.19.4) shall be designed to withstand the maximum forces developed during the retardation phase of emergency braking so that the resulting stresses due to emergency braking and all other loading acting simultaneously, if applicable, shall not exceed those specified in 2.9.4.