The width of door: general residence cent aluminim door 0.9 ~ 1m, cent room door 0.8 ~ 0.9m, kitchen door 0.8m or so, toilet door 0.7 ~ 0.8m, as a result of considering contemporary furniture move, nowadays take upper limit size more.  

The width of the door of a public building is generally 1m for a single door and 1.2m to 1.8m for a double door. The width of the door of a double door or multiple doors should be 0.6m to 1.0m.