| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an opening string and stairs making use of the open string capable of sufficiently having a function and strength as the stairs even if the open string is constituted of a lightweight construction, at the same time, forming of slim design making good use thereof, raising the architectural design efficiency of the stairs and facilitating the transportation and construction of the stairs. <P>SOLUTION: A pair of right and left open strings 2 and 2 consisting of the stairs 1 are equipped with a supporting column 4 projected downward to a middle part in the longitudinal direction of girder members 3 and flexible longer bodies 5 stretched through the supporting members 3 from one end section 3a over to the other end section 3b in the longitudinal direction of the girder members 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
