EVACUATION STRUCTURE An evacuation structure (1) has an incompletely watertight box-shaped structural body (6) including at least one hatch door (4), a float (10) provided to the box-shaped structural body (6), and at least one drain pipe (50) having one end (50A) open into the inside of the box-shaped structural body (6) and the other end (50B) open into an outer wall (3C to 3D) above a load water line (LWL), and the at least one drain pipe (50) has a check valve (60) that prevents an inflow of water to the inside of the box-shaped structural body (6) and that includes a valve that opens when water pressure of drainage from the inside of the box-shaped structural body (6) acts.
Evacuation structure
2023-03-16
Patent
Electronic Resource
English