Rainfall & harvesting
Storage tank sizing
Size a storage tank from daily demand and the number of days of autonomy you want.
Result
Usable volume required
1,400litres
Nominal tank size needed
1,505litres
Allowing for dead storage below the outlet.
In cubic metres
1.51m³
Method
Required volume = daily demand × days of autonomy, with an allowance for unusable dead storage at the tank base.