calculate water volume in a pipe

Don't know how to calculate the area of your garden or circumference of a pond? Ask your question here.
Forum rules
Dear convert-me.com forum visitors,

Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.

All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page

Thank you for being with us and sorry for any inconveniences this could caused.

calculate water volume in a pipe

Postby Ross » Tue Oct 18, 2005 3:37 am

If I have a pipe which is 4" in diamter and the pipe is 30' in length,
what is the water volume in gallons inside the pipe?
Ross Edwards
Ross
 
Posts: 3
Joined: Tue Oct 18, 2005 3:32 am
Location: California

Postby Guest » Tue Oct 18, 2005 4:54 am

About 19.6 gallons

30' = 360 inches

V = (pi/4)*d*d*h
where d is INSIDE diameter of the pipe, and h the length
This will be in cu inches (the reason for converting the length.

Then 1 US gallon = 231 cu in.
Guest
 

Thankyou

Postby Ross » Thu Oct 20, 2005 11:41 pm

Anonymous wrote:About 19.6 gallons

30' = 360 inches

V = (pi/4)*d*d*h
where d is INSIDE diameter of the pipe, and h the length
This will be in cu inches (the reason for converting the length.

Then 1 US gallon = 231 cu in.


I should read this as pi divided by 4 X d X d X height
which two diamters do you refer too?
Ross Edwards
Ross
 
Posts: 3
Joined: Tue Oct 18, 2005 3:32 am
Location: California

Postby Guest » Fri Oct 21, 2005 3:27 am

The diameter needs to be squared. I didn't have a good way to do a superscript (or I was too lazy to fire up Character Map).

I had the same problem with how to express pi = 3.14159..., but you need the constant pi/4.

Maybe V = 0.785*h*d^2 is clearer.
Guest
 


More info

  • List of all units you can convert online
  • Metric conversion
  • Convert grams to cups
  • Grams to milliliters
  • Imperial vs US Customary
  • History of measurement
  • Return to Calculating things

    Our Privacy Policy       Cooking Measures Converter       Metric conversions