Measure from the ground level standing position outside of the door such as from the porch floorboards upward.
Front door lock height standard.
When boring deadbolt locks in a door there are two standards for spacing between the bottom lock and the deadbolt.
Lock spacing the distance between two locks.
Installers typically drill the hole centered 36 inches above the floor if not specifically instructed to do so differently.
There are other combinations of spacing which are used on specialty locks however.
Use an average adult eye level height approximately 5 5 feet or slightly higher as a starting point for your door knocker placement decision.
Fortunately the standards for ada door handle height are not much different than traditional recommendations.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.
The international building code has established doorknob height between 34 and 48 inches above a finished floor.
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The two most common are 5 1 2 and 6 from the centers of the two holes.
All handles pulls latches locks and other operable parts of the door should measure between 34 inches and 48 inches above the floor.
Access doors or gates in.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.