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===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/]]
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.
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.
In a typical configuration:
In a typical configuration:
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#Initial water 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.  
#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.  
[[File:TTT.png|300 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]
[[category:modeling]]
[[category:modeling]]

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