OnlineConversion Forums Welcome to OnlineConversion.com Forums

Go Back   OnlineConversion Forums > Main Forums > Convert and Calculate

Convert and Calculate Post any conversion related questions and discussions here. If you're having trouble converting something, this is where you should post.
* Guest Posting is allowed.

Reply
 
Thread Tools Display Modes
  #1  
Old 08-09-2007, 06:47 AM
Unregistered
Guest
 
Posts: n/a
Default Gallons of water in pipe

if you have a 20' length of 12" PVC pipe How much water would it contain?
this is the calculation that I am using is it correct?
0.785X1X20=15.7 (Cubic Feet)
15.7X7.48 (Gallons In a Cubic Foot)=117.436
Reply With Quote
  #2  
Old 08-10-2007, 12:15 AM
Mrs X Mrs X is offline
can't count, can't spell!
Long Time Member The Golden Calculator Award The Tree House Award Over 1000 Posts
 
Join Date: Feb 2006
Location: New Zealand
Posts: 2,439
Rep Power: 12
Mrs X will become famous soon enough
Default Re: Gallons of water in pipe

Quote:
Originally Posted by Unregistered
if you have a 20' length of 12" PVC pipe How much water would it contain?
this is the calculation that I am using is it correct?
0.785X1X20=15.7 (Cubic Feet)
15.7X7.48 (Gallons In a Cubic Foot)=117.436
Hi,

The formula for the volume of a tube or cylinder is pi r times length. You need to have all the units the same, though. Radius is half the diameter.

If you start with feet, then the equation is:

0.5 x 3.1416 x 20 = 15.71f

There is 7.480 US gallons in a cubic foot, so you have:

15.71 x 7.480 = 117.5 gallons - Bingo!
Reply With Quote
  #3  
Old 01-31-2010, 02:26 AM
mohammed
Guest
 
Posts: n/a
Default Re: Gallons of water in pipe

20 inch pipe, 41 km ,how much of volume water will be there in gallon
Reply With Quote
  #4  
Old 01-31-2010, 03:44 AM
JohnS JohnS is offline
Moderator
Long Time Member The Golden Calculator Award Over 5000 Posts
 
Join Date: Dec 2007
Location: SE Michigan, USA
Posts: 9,546
Rep Power: 19
JohnS will become famous soon enough
Default Re: Gallons of water in pipe

Quote:
Originally Posted by mohammed View Post
20 inch pipe, 41 km ,how much of volume water will be there in gallon
You can't work in mixed units. Either convert 20" to meters (see below) or convert 41 km to inches and note that 1 (US) gallon =231 in; also note Imperial gallons are a different size.

20" x 0.0254 m/in = 0.508 m

Volume of a cylinder, V = (pi/4)*d*h
(be sure you are using inside diameter of the pipe)
= 0.785 * 0.508 * 41000 = 8310 m (8.31 megaliters)

A US gallon is about 3.7854 L, so about 2.2 million gallons
(divide by 1.2 for approximate Imperial gallons)
Reply With Quote
  #5  
Old 09-06-2010, 06:53 PM
Unregistered
Guest
 
Posts: n/a
Default Re: Gallons of water in pipe

You can also use diam. x diam. x length x 5.9

1.0 x 1.0 x 20 x 5.9 = 118 gallons.
Reply With Quote
  #6  
Old 09-08-2010, 07:21 AM
JohnS JohnS is offline
Moderator
Long Time Member The Golden Calculator Award Over 5000 Posts
 
Join Date: Dec 2007
Location: SE Michigan, USA
Posts: 9,546
Rep Power: 19
JohnS will become famous soon enough
Default Re: Gallons of water in pipe

Quote:
Originally Posted by Unregistered View Post
You can also use diam. x diam. x length x 5.9

1.0 x 1.0 x 20 x 5.9 = 118 gallons.
Just to be clear, diameter and length must be feet to apply this formula. The constant, 5.9, is a rounded value for (pi/4)*(1728/231), where the second term is number of gallons in 1 cubic foot.
Reply With Quote
  #7  
Old 02-04-2012, 11:55 PM
Unregistered
Guest
 
Posts: n/a
Default Re: Gallons of water in pipe

If i have 500 gallons...,what will be the measurement of the pipe using?
Reply With Quote
  #8  
Old 02-24-2012, 04:56 AM
Bipin Kumar Roy
Guest
 
Posts: n/a
Default Calculation in Ltr.

How much water contain in 8" Pipe of 91 Mtrs. Length.
Reply With Quote
  #9  
Old 02-24-2012, 07:35 AM
JohnS JohnS is offline
Moderator
Long Time Member The Golden Calculator Award Over 5000 Posts
 
Join Date: Dec 2007
Location: SE Michigan, USA
Posts: 9,546
Rep Power: 19
JohnS will become famous soon enough
Default Re: Calculation in Ltr.

Quote:
Originally Posted by Bipin Kumar Roy View Post
How much water contain in 8" Pipe of 91 Mtrs. Length.
You must use consistent units. Since 1 L = 1 dm, decimeters may be the easiest choice. 91 m = 910 dm, 8" = 2.032 dm

V = (pi/4)*D*D*L = 3.14159/4 * 2.032 * 2.032 * 910 dm = 2951 L
Reply With Quote
  #10  
Old 09-27-2012, 02:42 AM
Unregistered
Guest
 
Posts: n/a
Default Re: Gallons of water in pipe

I'm trying to figure out a pvc pipe gas tank for a homemade boat. If I use 6' pipe, 2' long my calculations using the second method diaxdiaxlengthx5.9, I come up with 2.95 gallons. Correct?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 04:49 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1997-2005, 2007, OnlineConversion.com