Wayne Proudlove wrote:I have a cylindrical tank that lays in a cradle on it's side. The tank is 20 feet long and 5 foot 4 inches in diameter. I want to figure out the volume of the tank in gallons. I would also like to know how to extrapulate a table for gauging the tank from the top when it lays on its side and it would vary the per inch amount in the curve of the tank.
The formula for the volume of a cylinder is: PI*radius^2*length. It can also be written as: (PI*diameter^2*length)/4.
Assuming measurements are inside dimensions and the tank has flat ends:
Diameter: (5' * 12") + 4" = 64"
Length: 20' * 12" = 240"
(PI * 64"^2 * 240") /4,
(3.1415927 * 4096 * 240") /4 = 772,077.81 in^3
There are 231 in^3 in 1 gallon, so 772,077.81 in^3 / 231 in^3/gal = 3,342.33 gallons.
Calculating horizontal cylinder tank volumes by the inch is much more complicated. Go to
http://vps.arachnoid.com/TankCalc/ and run the applet. Use inches for length units. If tank ends are flat, enter 0 in the "end cap radius" fields.
If you need further help, repost.