Download Sump Pit Sizing Calculator Spreadsheet

The sump pit or the sump basin is constructed to collect drainage water like sanitary water, rain water or car parking water, it is always in a hole shape and commonly used in collecting water from basement levels before pumping it to the manhole network in the ground level.

We provided you with an excel sheet calculator for sizing the sump pit and determining the effective volume of the basin beside sizing the sump pump.

Download also: Sump pump sizing excel sheet

Sump Pit Sizing Calculator

How to size a sump pump pit ?

Choosing the right size of the sump pit is important, you need to know the volume of the pit and then chose the diameter and the depth of the sump pit. To obtain these dimensions you need to know the inflow rate coming to the pit from the various drainage systems.

Using the attached excel sheet and by entering the input data below you can determine the effective of the sump pump it and also the pump size (flow rate and head). 

Download Sump Pit and Pump Sizing Calculator Spreadsheet

Input data:

• Sump Pit Inflow Rate from Fixture Units
• Sump Pit Inflow Rate from Rain Water
• Sump Pit Inflow Rate from Filter Backwash
• Sump Pit Inflow Rate from Softener Backwash
• No. of Pump Starts/hour
• Total Pipe Length
• Fittings Equivalent Length
• Friction Loss in Pipes
• Static Height
• Outlet Residual Pressure

Output data:

• Sump Pump Flow Rate
• Sump Pump Head
• Sump Pit Effective Volume