| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a platform constructed with use of a floor slab, allowing a door device to be easily installed by floor slab replacement alone. <P>SOLUTION: A platform 1 is constructed with use of a floor slab 3 formed of high strength concrete material without placement of steel bars or PC steel wires for installation of a movable platform fence 2. The platform 1 comprises the slab 3, a support part 4 which supports the spanned slab 3, a connection bolt 5 which connects the slab 3 and the support part 4, and the movable platform fence 2 which is fixed on the floor slab. <P>COPYRIGHT: (C)2012,JPO&INPIT |
