What is the maximum flow rate for a 3/4 inch pipe to stay below 5 feet per second?

To determine the maximum flow rate for a 3/4 inch pipe while ensuring that the water velocity remains below 5 feet per second, it's essential to understand the relationship between pipe diameter, flow velocity, and flow rate, generally measured in gallons per minute (GPM).

The diameter of the pipe influences the cross-sectional area through which the water flows. For a 3/4 inch pipe, this cross-sectional area can be calculated using the formula for the area of a circle (A = πr²). As the flow velocity is set at a limit of 5 feet per second, the corresponding flow rate can then be calculated using the formula: Flow Rate = Cross-Sectional Area x Velocity.

When calculated, the maximum flow rate that keeps the water moving at or below 5 feet per second for a 3/4 inch pipe comes out to be approximately around 10 gallons per minute. This interpretation aligns with the hydraulics of pipe flow, where exceeding this flow rate would potentially lead to increased pressure losses, noise, and even potential damage to the piping system due to high velocity.

This understanding of fluid dynamics and measurements demonstrates why the correct answer is 10 gallons per minute, emphasizing the importance of flow rate limitations to maintain an