Operable devices such as handles, pulls, latches and locks shall meet the following requirements:
a) They shall be operable by one hand.
b) They shall not require fine finger control, tight grasping, pinching or twisting to operate.
c) They shall be mounted at a height of 850 mm to 1 100 mm from the floor (see Fig. 47).
d) For easy identification by persons with visual impairment, all door furniture shall contrast visually with the surface of the door;
e) The location and design of latch and push/pull handles shall be consistent throughout a building.
f) To facilitate the closing of a door by wheelchair users (for example a water-closet compartment, that does not have a self-closing mechanism), the door shall have a horizontal handle, provided on the closing face of the door, approximately 760 mm from the floor.