Calculate Water Loss in Broken Pipes: Formula/Equation

[Bennett Siwane]

Good day. Help me with a formula/equation to calculate water loss in broken pipes, e.g. a 63mm PVC pipe broken and spilling water.

 

[billy_joule]

Bernoulli's equation is a start.

 

[Travis_King]

I'm usually one to suggest formulas and theory and all that, but if it's still leaking can you just time how long it takes to fill up a 5 gallon bucket?

A 63 mm (2.5") pipe will generally carry somewhere in the range of 50-150 gpm in economic designs. Typically falling toward the middle of that range (100-125 gpm). Though of course there are many instances where flows are much higher or lower.