Standard Bore Height For Door Handle

Standard height the standard height for doorknobs on a typical 80 inch tall household door is 36 inches.

Standard bore height for door handle.

Why this is standard is not certain. Through the edge of the door there is a 1 cross bore that extends from the edge of the door through the bore hole. This cross bore is where the latch is installed. Installers typically drill the hole centered 36 inches above the floor if not specifically instructed to do so differently.

The most likely explanation is that as we began to mass produce doors the centre of most middle rails in the typical drop panelled door was 36 inches from the bottom of the door. The bore hole is the large diameter hole where the door knob is mounted. The standard sized bore hole is 2 1 8 in diameter. The standard measurement for a bore hole is 2 1 8 inch in diameter and the standard measurement of a cross bore is 1 inch in diameter.

Generally the knobs should be of a free moving slide action. The height of the door handle is not so much the problem as the door handle itself. Exceptions to the rule include doors that provide egress into swimming pools or other water features. Fortunately the standards for ada door handle height are not much different than traditional recommendations.

The requirements of bs 8300 provide for a door knob to be between 800mm 1050mm 31 5 41 5 inches from a finished floor. The international building code has established doorknob height between 34 and 48 inches above a finished floor. The latch bore is the small hole on the edge of the door for the latch itself.