| 摘要 |
PROBLEM TO BE SOLVED: To provide an indoor stair structure in which connection stairs leading to a private space (second floor) are provided in a room to ensure the privacy of a building and further the stairs can be used as a place for a community, such as a sofa. SOLUTION: A staircase 1, in which the flat area of steps 3 at the entrance 2 of the staircase 1 is expanded so that the steps 3 are expanded downwards, is provided in a living room. And the side of the staircase 1 is slaced apart from the wall of the room to form a passable space beside the staircase 1 and the staircase 1 is disposed at the rear of the living room, and a bathroom, lavatory, and toilet are disposed at the rear of the living room across the staircase 1. |
