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#1




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 
#2




Re: Gallons of water in pipe
Quote:
The formula for the volume of a tube or cylinder is pi r² 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: 0.5² x 3.1416 x 20 = 15.71f³ There is 7.480 US gallons in a cubic foot, so you have: 15.71 x 7.480 = 117.5 gallons  Bingo! 
#3




Re: Gallons of water in pipe
20 inch pipe, 41 km ,how much of volume water will be there in gallon

#4




Re: Gallons of water in pipe
Quote:
20" x 0.0254 m/in = 0.508 m Volume of a cylinder, V = (pi/4)*d²*h (be sure you are using inside diameter of the pipe) = 0.785 * 0.508² * 41000 = 8310 m³ (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) 
#5




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. 
#6




Re: Gallons of water in pipe
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.

#7




Re: Gallons of water in pipe
If i have 500 gallons...,what will be the measurement of the pipe using?

#8




Calculation in Ltr.
How much water contain in 8" Pipe of 91 Mtrs. Length.

#9




Re: Calculation in Ltr.
You must use consistent units. Since 1 L = 1 dm³, 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 dm³ = 2951 L 
#10




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?

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