Enter the water line radius (ft) and the water line length (ft) into the Calculator. The calculator will evaluate the Water Line Capacity. 

Water Line Capacity Formula

WLC = pi * r^2 * L

Variables:

  • WLC is the Water Line Capacity (ft^3)
  • r is the water line radius (ft)
  • L is the water line length (ft)

To calculate Water Line Capacity, multiply the water line length by the water line radius squared, then multiply by pi.

How to Calculate Water Line Capacity?

The following steps outline how to calculate the Water Line Capacity.


  • First, determine the water line radius (ft). 
  • Next, determine the water line length (ft). 
  • Next, gather the formula from above = WLC = pi * r^2 * L.
  • Finally, calculate the Water Line Capacity.
  • After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

water line radius (ft) = 0.75

water line length (ft) = 500

Frequently Asked Questions (FAQ)

What is the significance of calculating Water Line Capacity?

Calculating the Water Line Capacity is crucial for designing and managing water distribution systems. It helps in ensuring that the system can meet the demand, optimizing the flow, and minimizing the risk of overloading or underutilization.

Can this formula be used for any type of pipe material?

Yes, the formula for Water Line Capacity (WLC = pi * r^2 * L) is based on geometric calculations and does not directly account for material properties. However, the material might affect the actual capacity due to factors like roughness and durability over time.

How does changing the radius of the water line affect its capacity?

Increasing the radius of the water line will significantly increase its capacity. Since the radius is squared in the formula, even small increases in radius can lead to large increases in capacity, improving the flow rate and reducing the chances of blockages.

Is it necessary to use feet as the unit of measurement?

No, you can use any unit of measurement for calculating Water Line Capacity as long as you maintain consistency across all variables. If you use meters for radius and length, the capacity will be in cubic meters.