On Wed, 04 Jun 2008 09:58:56 -0700, Bruce L. Bergman
wrote:

On Mon, 2 Jun 2008 13:49:04 -0700, "Stuart & Kathryn Fields"
wrote:

Try calculating the volume of horizontally mounted cylindrical tank with
domed hemispherical ends as a function of the height of the liquid so that
you can devise your own stab stick.

I'm horrible at higher math, but even I know you split that into a
horizontal cylinder and a sphere (for the two end shells). Solve the
height/volume for each separately, and add the results together.

And don't forget to allow for a striking pad in the bottom of the
tank at the stick hole - underground storage tanks place a big piece
of 1/2" plate there so you don't drop the stick hard a few thousand
times and manage to crack the inner wall. Or just 'the wall' on an
old single-wall tank.

-- Bruce --

While tanks with hemispherical ends exist, most tanks have domed ends
that are not hemispheres. Typically, they're a portion of a spherical
surface that has a center somewhere in the interior of the tank.

Given only the OAL of the tank and the length and diameter of the
cylindrical part of the tank, the math becomes an interesting
exercise.