WAC 296-96-02540
What are the installation and operation
requirements for hall buttons? (1) A clear floor space
complying with ANSI A117.1 section 305 shall be provided at
call controls.
(2) Objects beneath hall call buttons shall protrude one
inch maximum.
(3) Call buttons and keypads shall be located within one
of the reach ranges specified in ANSI A117.1 section 308
measured to the centerline of the highest operable part. In
no instance shall they be lower than thirty-six inches.
(4) Call buttons shall be raised or flush.
(5) Call buttons shall be 3/4 inch minimum in the
smallest dimension.
(6) The call button that designates the up direction
shall be located above the call button that designates the
down direction.
(7) Call buttons shall have visible signals to indicate
when each call is registered and when each call is answered.
EXCEPTION:
Special purpose and residential elevators are exempt from this section.