4 calculators in this category
- Drainage Fixture Unit (DFU) CalculatorIPC Chapter 7 drainage sizing tablesCount the fixtures on the segment you are sizing and this calculator totals their drainage fixture units, then returns the…
- Pipe Slope & Fall CalculatorIPC 2021 Table 704.1Give this calculator a run length and any one expression of grade — inches per foot, percent, a 1-in-X ratio, or the total fall…
- Manning's Equation Pipe Flow CalculatorManning's equation (US customary form)Enter a pipe diameter, a slope, a Manning roughness and a depth of flow, and this calculator returns the gravity discharge in…
- Septic Tank Size CalculatorEPA Onsite Wastewater Treatment Systems Manual (EPA/625/R-00/008)This calculator sizes a residential septic tank the way a health department does: estimate the design daily wastewater flow…
Which one do you need?
- Drainage Fixture Unit (DFU) Calculator
- Total drainage fixture units for your fixtures and get the minimum branch, stack or building drain size at your slope, using the IPC drainage sizing tables.
- Pipe Slope & Fall Calculator
- Convert drain pipe slope between inches per foot, percent, ratio and total fall over any run, and check the grade against the IPC minimum for your size.
- Manning's Equation Pipe Flow Calculator
- Find gravity flow and velocity in a circular pipe at any depth with Manning's equation. Returns GPM, cfs, MGD, full-flow capacity and a scour check.
- Septic Tank Size Calculator
- Size a septic tank from bedrooms or occupants. Get design daily flow, required liquid capacity, the next standard tank size and the detention time you get.