Article 23 the building's staircase if one or more of the housing ladder with a width of not less than 80 NET.Centimeter intervals not exceeding 3 metres tall use to no more than 20 meters to centimeters. Horizontal lines when deducting stair.Overlap and then the remaining width of not less than 10 cm, and must have a floor length, width and front steps of the.Not less than the width of the stairs.The staircase must exceed 3 meters of terrace property ladder range 3 m or less, and suburban property ladders must.Width and length is not less than the width of the stairs. Distance from floor, staircase or staircases to the lowest terrace property.Of the buildings above must be not less than 1.90 meters high.
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