Guidance on storage-compensation rules for shorter disconnection lengths.
Link to this table.
|Disconnection length provided||0 to 14 feet||15 to 29 feet||30 to 44 feet||45 to 59 feet||60 to 74 feet||75 feet|
|% Vwq treated by disconnect||0||20||40||60||80||100|
|% runoff storage needed||100||80||60||40||20||0|
|Maximum storage volumea (ft3)||40||32||24||16||8||0|
aassuming 500 square feet roof area to each downspout disconnection