Ada Door Threshold Height

Door thresholds that have a vertical height of or less are ada compliant.

Ada door threshold height.

Additionally many thresholds fall notably short of the standards. Thresholds at doorways shall not exceed 3 4 in 19 mm in height for exterior sliding doors or 1 2 in 13 mm for other types of doors. This is especially the case in old doors such as those. Doors and gates in series.

Changes in level up to 1 4 inch can be vertical and do not need an edge treatment. Door thresholds can be modified with a transition ramp up to in vertical height. Raised thresholds and floor level changes at accessible doorways shall be beveled with a slope no greater than 1 2 see 4 5 2. The ada requirements for thresholds are.

Additionally the grade of the threshold may not exceed 2 percent in any direction. Thresholds if provided at a doorway must not exceed 3 4 inch in height for exterior sliding doors or 1 2 inch for other types of doors. Ada compliant door closers shall be adjusted so that from an open position of 90 degrees the time required to move the door to a position of 12 degrees from the latch is 5 seconds minimum. Any door threshold higher than in vertical height requires a level landing.

While some standard door thresholds particularly modern thresholds are designed to adhere to ada standards this is hardly the norm. Closing speed if a door is equipped with an automatic closing device.