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Water Supply Pipe Sizing Calculator

Determine the minimum pipe diameter needed to deliver a required flow rate under specified pressure and elevation conditions. Used by hydraulic engineers designing water mains, irrigation systems, and building reticulation.

Required Flow Rate (L/s)

Pipe Length (m)

Elevation Difference (m)

Minimum Pressure Required (kPa)

Pipe Material

Fill in the required fields to see your result.

Civil

Retaining Wall Pressure Calculator

Computes the Rankine active lateral earth pressure resultant acting on a retaining wall based on soil height, unit weight, and internal friction angle. Essential for structural design of basement walls, highway cuts, and embankments.

Wall Height (m)

Soil Unit Weight (kN/m³)

Soil Friction Angle (degrees)

Fill in the required fields to see your result.

Key differences

	Water Supply Pipe Sizing Calculator	Retaining Wall Pressure Calculator
Category	Civil	Civil
Inputs required	5	3
Result	Required Pipe Diameter (mm)	Lateral Earth Pressure (kN/m)
What it does	Determine the minimum pipe diameter needed to deliver a required flow rate under specified pressure and elevation conditions. Used by hydraulic engineers designing water mains, irrigation systems, and building reticulation.	Computes the Rankine active lateral earth pressure resultant acting on a retaining wall based on soil height, unit weight, and internal friction angle. Essential for structural design of basement walls, highway cuts, and embankments.