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Cistern: Rain barrels (or cisterns) are containers that collect roof runoff during storm events and can either release or re-use the rainwater during dry periods. Rain harvesting systems collect runoff from rooftops and convey it to a cistern tank where it can be used for non-potable water uses and on-site infiltration.
Widespread use of rain barrels also changes the amount of rainwater reaching the ground in a particular area and draining into streams. Depending on the climate, this either helps prevent erosion, sedimentation, and/or pollution, and can reduce the strain on stormwater drainage systems; or it could cause rivers to dry up and ponds to stagnate ...
Guttering in its earliest form consisted of lined wooden or stone troughs. Lead was a popular liner and is still used in pitched valley gutters. Many materials have been used to make guttering: cast iron , asbestos cement , UPVC (PVCu), cast and extruded aluminium , galvanized steel , wood , copper , zinc , and bamboo .
configuration of domestic rainwater harvesting system in Uganda. [1]Rainwater harvesting (RWH) is the collection and storage of rain, rather than allowing it to run off.. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole), aquifer, or a reservoir with percolation, so that it seeps down and restores the ground w
A groin vault or groined vault (also sometimes known as a double barrel vault or cross vault) is produced by the intersection at right angles of two barrel vaults. [1] The word "groin" refers to the edge between the intersecting vaults. Sometimes the arches of groin vaults are pointed instead of round. In comparison with a barrel vault, a groin ...
These credits include the following: Stormwater quantity and quality controls to reduce runoff, increase reuse, and stop pollutants; efficient landscaping for rainwater reuse; innovative wastewater technologies for non-potable applications such as toilet flushing and process water; water efficiency to reduce the burden on municipal water supply ...
A virga, also called a dry storm, is an observable streak or shaft of precipitation that evaporates or sublimates before reaching the ground. [1] A shaft of precipitation that does not evaporate before reaching the ground is known in meteorology as a precipitation shaft.
The simplest form of an architecture vault, consisting of a continuous surface of semicircular or pointed sections. It resembles a barrel or tunnel which has been cut in half lengthwise and is known as tunnel vault or wagon vault. A longitudinal barrel vault is a barrel (or tunnel) vault which follows the main longitudinal direction of the nave.