JP2006291580A5 - - Google Patents

Claims (3)

A rainwater drainage basin that collects and drains rainwater, a drainage pipe connected to a sewer located slightly higher than the bottom of the rainwater drainage basin, and a box type that is buried in the ground with a bottom slightly higher than this drainage pipe Pit, a pipe connecting the bottom of the pit and the cage, a box-shaped floating body placed in the pit, a waterproof plate erected on the floating body, and a waterproof position of the structure A simple waterproof board using a floating body, comprising a receiving frame, wherein the waterproof board is guided by the receiving frame and can move up and down. 2. A simple waterproof board using a floating body according to claim 1, wherein a tilting guide member is provided at an upper part of the pit, and a waterproof board is erected on the top of the box-type floating body having an inclined roof. The receiving frame has a guide groove and an elastic band provided on the left and right vertical frames. The guide groove has a stopper portion made of a recess deeper than the guide groove, and the elastic band connecting the lower end of the elastic band is lateral. The waterproof plate is provided with a guide made of a projecting body that slides up and down the guide groove of the receiving frame at the same position as the stopper, and has a convexity lower than the guide at the same position as the elastic band. 3. A simple waterproof board using a floating body according to claim 1, further comprising a tooth.