Construction furniture and door handle position to be set in the most labor-saving position. That is, the location where the maximum operating force can be emitted, i.e. the position of the appropriate operation is measured with the activity of the dorsal muscle.
The handle position is related to height, with two handles in Europe for adults and children. General office handle position 100cm, general household with 80-90cm. The kindergarten is still lower.
The average family door handle height is in the 1100mm or so, but this is only a general height, each household family members of different height, open door habits are also many different, so this door handle height should be set how much or should be specific to consider.