309 – Operable Parts Quick Guide

309.2 Clear Floor Space.
A clear floor or ground space complying with 305 shall be provided.

309.3 Height. 
Operable parts shall be placed within one or more of the reach ranges specified in 308.

309.4 Operation. 
Operable parts shall be operable with one hand and shall not require tight grasping, pinching, or twisting of the wrist.  The force required to activate operable parts shall be 5 pounds (22.2 N) maximum.