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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

Flexible Pavement Design Calculator

Calculate the required asphalt pavement layer thickness based on traffic loading (ESALs), subgrade strength (CBR), design reliability, and climate zone using the AASHTO flexible pavement method. Used by highway and airport pavement engineers.

Design ESAL (millions) (million)

Subgrade CBR (%)

Design Reliability

Climate Zone

Terminal Serviceability Index

Fill in the required fields to see your result.

Key differences

	Water Supply Pipe Sizing Calculator	Flexible Pavement Design Calculator
Category	Civil	Civil
Inputs required	5	5
Result	Required Pipe Diameter (mm)	Total Pavement Thickness (mm)
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.	Calculate the required asphalt pavement layer thickness based on traffic loading (ESALs), subgrade strength (CBR), design reliability, and climate zone using the AASHTO flexible pavement method. Used by highway and airport pavement engineers.