The number of modules needed to achieve a sufficient volume in the buffer.
The area that it cleans and the buffer is expected to take care of.
Refers to the total area of the total buffer in one floor other configurations may be possible depending on the manufacturer.
A coefficient that depends on how much of the rain hits the imagined surface that will end up in the buffer.
Hydraulic efficiency is an expression of how well the incoming water is distributed over the surface of the reservoir and how much it is mixed with the reservoir water. The hydraulic efficiency has a value between 0 and 100%, where 100% is spread throughout the buffer and 0 is extremely low spread.
Refers to the rate at which the water is infiltrated to the ground from the reservoir.
Refers to the height of the current buffer.
Refers to the dimensions and how much of the module can be used for the volume of liquid.
Rain depth likely
The likely minimum and highest rain depth.
How intense the rain is, that is, how much water falls per surface.
How long the design rain lasts.
Refers to a buffer that is closed on all sides.
The time it takes to empty the buffer.
The largest allowable outflow from the buffer.
The volume that needs to be buffer
Refers to a buffer that is open upwards ie rain can fall directly into the buffer.