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Each Stormwater Control has an associated sizing calculator that allows the user to either:
(a) specify a new volume for the Stormwater Control whilst varying a chosen dimension, e.g. Depth, Width, Length etc.
(b) specify a scale factor to modify the existing volume of the Stormwater Control, again whilst varying a chosen dimension
(c) in the case of a Tank or Pond to specify a particular side slope, either from its top downwards or base upwards
<screenshot of the SWC sizing calculator (can be from any of the SWC types>
The SWC sizing calculator consists of the following options:
Choose Volume or Runoff Reduction Volume to specify a volume. When choosing either of these a calculator button appears to the right; if Volume was chosen then clicking on the calculator button produces the Quick Storage Estimate (QSE) calculator, if Rural Reduction Volume is chosen then clicking on the calculator button produces the Water Quality Volume (WQv) calculator.
Using either of these calculators will return a volume into the sizing calculator; In the case of the QSE calculator the returned volume is the centre of the estimated storage volume range. In the case the WQv calculator the returned volume is the Target Volume stated in the WQv's report.
Porous Paving (with and without Underdrain)