Underground storage chambers are typically designed to store larger volumes of water and are often used for quantity control. Underground storage chambers have large void spaces and typically have open bottoms allowing the system to infiltrate into the surrounding soils. Currently ADS Storm Tech Chambers (all sizes) can be designed in VO. Users can input their design parameters and the program will automatically calculate how much storage is required and provided. Underground storage chambers are designed with an overflow, an outflow, and an optional subdrain feature. Key features for the underground storage chamber designs are shown in the diagram below.

Parameter Name Description Default Value
Chamber Selection
NUMBER OF CHAMBERS Number of individual storage chambers used in design 900
BASE OF STONE ELEVATION Base of stone/storage elevation 100
DEPTH OF STONE BELOW CHAMBERS Amount of stone between the base of the systems and the in-vert of the storage chambers (mm) 152
DEPTH OF STONE ABOVE CHAMBERS Amount of stone between obvert of the chamber and the top of the storage layer (mm) 152
MIN BOTTOM AREA Bottom footprint area of the underground storage layer 100
MAX STORAGE VOLUME Maximum volume provided with current system design. Max storage is automatically calculated with the input parameters (m³) 978.51
DEPTH-STORAGE RATING CURVE Volume provided with current system design. Storage volume is automatically calculated with the input parameters (m³)
Initial Water Level Depth of water in the storage layer at the start of a model run 0