Patent ID: 6796325
Filing Date: 2004-09-28
Classification: E03F,Y10T

Abstract:
A stormwater retention apparatus to retain stormwater prior to release of the stormwater from a property, comprising:a closed container located underneath or proximal to a building of the property, being operatively connected by at least one inlet conduit to drainage means sourced externally from the building to receive stormwater into the container, and being further operatively connected to at least one outlet conduit by which stormwater is led away from the container; and a control chamber with which the container is in fluid communication and through which stormwater enters and is to be stored in, and leaves the container when the stormwater reaches a determining level in the control chamber spaced above the base of the container, wherein the inlet and outlet conduits are connected to the control chamber and thereby to the container, and that the outlet conduit comprises an end portion which passes out of the control chamber and includes an entry spaced above the determining level by which stormwater can pass from the control chamber into the end portion to exit from the control chamber, and which by being spaced above the determining level thereby allows stormwater to collect in the container and control chamber above the determining level.