2010 ADAS 404.2.9 – Door and Gate Opening Force
The force for pushing or pulling open a door or gate other than fire doors shall be 5 pounds maximum. The maximum force pertains to the continuous application of force necessary to fully open a door, not the initial force needed to overcome the inertia of the door.
Check your state’s accessibility laws. Some states such as California, Georgia and Florida have additional requirements and standards.