METHOD AND DEVICE FOR SIPHONING WATER FROM A PONDING AREA ON A FLAT ROOF

摘要

A method and apparatus for removing water from a ponding area of a flat roof having a run-off system which is no longer operable to drain water from the ponding area which comprises directing a quantity of the run-off water flowing in the run-off system as a result of the commencement of a rain condition or the like into a priming chamber, displacing water from the priming chamber back into the run-off system in such a way as to establish a negative pressure condition within the priming chamber, and communicating the negative pressure condition to an end of a siphon hose at a vertical level below the level of the pond area, the other inlet end of which is disposed in water sucking relation to the pond area to thereby prime the siphon hose and commence the flow of water from the ponding area which flow after the cessation of the rain condition or the like continues until the water is substantially removed from the ponding area.