| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an entrance structure in which stairways led to an upper story is arranged in an entrance and a space for arranging stairs does not need to be secured to the back of an entrance hall. <P>SOLUTION: The stairways 15 led to the upper story is arranged in the entrance 2. At least a part of the stairways 15 is strip stairways 20 having a center beam 20a and a plurality of stair treads 20b attached to the center beam 20a at predetermined intervals in the longitudinal direction of the center beam. At least a part of the strip stairways 20 is disposed above an entrance floor 6. Accordingly, the space for arranging the stairways 15 to the bottom side of the entrance hall 5 does not need to be secured. Consequently, the layout of those rooms other than the entrance is not restricted. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
