| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a column which can obtain high strength against load without increasing rigidity of the column and a stone fall protection device using the same. <P>SOLUTION: A column for stone fall protective net comprises a plurality of supporting legs 20 and 20 which are installed with an interval with each other, a beam member 30 erected between the supporting legs 20 and 20, and a support post 40 which is erected on the beam member 30 and which supports a stone fall protective net, and the supporting leg 20 supports the beam member 30 at a position away from the shaft center of the support post 40, while each of the supporting leg 20 and 20 is installed through hinges 21 and 21 to be tiltable in the direction orthogonal to the extension direction of the beam member 30. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
