The size of the building.
Maximum size of ada door handle obstruction.
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.
If the high forward reach is over an obstruction reach and clearances shall be as shown in here under.
Door pressure gauges and other products are available to measure the opening force.
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.
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.
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.
Door openings shall provide a clear width of 32 inches 815 mm minimum.
That said the hardware and direction handles latches and which way the door opens can get a bit confusing.
Minimum of 18 inches minimum between the latch side and any obstruction a wall columns objects etc for a forward approach to the door.
Each fire door including its frame and hardware must be listed or approved by a nationally recognized testing laboratory.
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.
Fire resistance rated glazing tested to astm e 119 or ul 263 and nfpa 252 ul 10b or ul 10c shall be permitted in fire door assemblies located in fire walls and in fire barriers in accordance with table 716 5 to the maximum size tested and in accordance with their listings.
Effort to operate doors 8 5 pounds at exterior doors and 5 pounds at interior doors door hardware height 30 44 above floor.
The door shall be self closing.
Section 404 of the ada states.
Operable parts shall be operable with one hand and shall not require tight grasping pinching or twisting of the wrist.
Door hardware operable with a single effort without requiring ability to grasp hardware.
Handles pulls panic bars.
