Door opening space from the face of the door up to stop of the door frame must be between 32 inches minimum to a 48 inches maximum.
Maximum size of ada door handle obstruction.
Door hardware ada compliant locks exit devices handles pulls latches and other operable parts on doors shall comply operable parts of such hardware shall be 34 inches minimum and 48 inches maximum above the finish floor or ground.
Toilet compartment doors including door hardware shall comply with 404 except that if the approach is to the latch side of the compartment door clearance between the door side of the compartment and any obstruction shall be 42 inches 1065 mm minimum.
Maneuvering clearances for forward approach shall be provided when any obstruction within 18 inches 455 mm of the latch side of a doorway projects more than 8 inches 205 mm beyond the face of the door measured perpendicular to the face of the door or gate.
4 2 6 side reach if the clear floor space allows parallel approach by a person in a wheelchair the maximum high side reach allowed shall be 54 in 1370 mm and the low side reach shall be no less than 9 in 230 mm above the floor.
The size of the building.
Such devices like other door and gate hardware must operate with a maximum 5 lbf force 404 2 7 but their operating force is not included in the measure of door or gate opening force.
That said the hardware and direction handles latches and which way the door opens can get a bit confusing.
Handles pulls panic bars.
Effort to operate doors 8 5 pounds at exterior doors and 5 pounds at interior doors door hardware height 30 44 above floor.
The width of an exit route must be sufficient to accommodate the maximum permitted occupant load of each floor served by the exit route.
Door openings shall provide a clear width of 32 inches 815 mm minimum.
Operable parts shall be operable with one hand and shall not require tight grasping pinching or twisting of the wrist.
Section 404 of the ada states.
Door hardware operable with a single effort without requiring ability to grasp hardware.
In general the requirements are a minimum of 32 in width and a maximum of 48 and the door must open to 90 degrees.
Size min 3 0 wide 32 clear when 90 open and 6 8 in height.
Door pressure gauges and other products are available to measure the opening force.
Minimum of 18 inches minimum between the latch side and any obstruction a wall columns objects etc for a forward approach to the door.
If the high forward reach is over an obstruction reach and clearances shall be as shown in here under.