What is the maximum flow rate for a 1 1/4 inch pipe to stay below 5 feet per second?

To determine the maximum flow rate for a 1 1/4 inch pipe at a velocity of 5 feet per second, it's essential to know how flow rate and pipe size relate to each other.

The flow rate in a pipe can be calculated using the formula:

[ Q = A \times V ]

where ( Q ) is the flow rate in cubic feet per second, ( A ) is the cross-sectional area of the pipe in square feet, and ( V ) is the velocity in feet per second.

For a circular pipe like the 1 1/4 inch diameter pipe, the area can be calculated using the radius:

1. Convert the diameter from inches to feet, where 1 1/4 inches equals 1.25 inches or approximately 0.1042 feet.
2. The radius is half of the diameter, so the radius is about 0.0521 feet.
3. The cross-sectional area ( A ) can then be calculated as:

[ A = \pi \times r^2 \approx 3.14159 \times (0.0521)^2 \approx 0.00854 \text{ square feet} ]

Now, using the maximum