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Line 52: Once the size of cistern has been determined, it can easily be modeled in many open source and proprietary applications. For planning purposes, a RWH system could be integrated into a site plan using STEP's Treatment Train Tool. This tool provides a graphical user interface and simplified inputs on the EPA SWMM model. It is free to download, click image above. In a typical configuration:*The catchment (roof) would be 100% impervious*The rainwater harvesting system would be a 'Storage' Element with the following properties:**Storage type = No removal**Lined**Underlying soil = <em>doesn't matter, can ignore</em>**Evaporation factor = 0**Suction head (mm) = 0**Saturated conductivity (mm/hr) = 0**Initial soil moisture deficit (fraction) = 0*The dimensions of the rainwater cistern can be placed into the fields:#Bottom elevation (m)#Maximum depth (m)#Initial water depth (m)#The Curves table is designed to accommodate ponds of roughly conical dimensions. A rainwater cistern is usually cuboid or cylindrical in shape, so that the area (m<sup>2</sup>) will remain the same throughout the depth.
Rainwater harvesting: Sizing and modeling (view source)
Revision as of 01:52, 8 September 2017
, 7 years ago→STEP Treatment Train Tool
===STEP Treatment Train Tool===
===STEP Treatment Train Tool===
[[File:TTT.png|400 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]
[[File:TTT.png|400 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]
[[Rainwater harvesting: TTT]]
[[category:modeling]]