My mind is a little fuzzy, but I'm trying to find the volume of a cylindrical tank that is partially full. If the tank is situated like this:




The tank is 10 ft in diameter by 17 ft in length...show me how to do the math if there were, say, 2 ft of water in the tank.

Thanks

11/25/2013 8:47:06 AM

No need for calc

11/25/2013 9:00:36 AM

Draw a circle with r=5', and water 2' deep in the bottom. Draw a radial line to the edge of the water on both sides (5' long), and a line straight down to the surface of the water (5-2=3' long).

Find the area of the whole wedge, and then subtract the area of the two triangles.

Then multipy by tank length. 189 cu ft

11/25/2013 9:00:55 AM

this problem deals with what is called a horizontal cylindrical segment

http://mathworld.wolfram.com/HorizontalCylindricalSegment.html

more commonly in industry, we call it a strapping chart. i use this:

http://www.odayequipment.com/Support/TankChart/tankchartcalculator.shtml

11/25/2013 9:02:55 AM

awesome....thank you

11/25/2013 9:07:02 AM

It's kind of funny that anyone would have use for an online calculator for a rectangular or cylindrical tank sitting straight up.

11/25/2013 9:08:46 AM

that site is the quickest way for me to produce a chart that i can give to operators to allow them to figure out how many gallons are in vertical cylindrical tanks.

11/25/2013 9:14:18 AM

wow

11/25/2013 9:15:51 AM

i've tried showing them a formula, explaining pi*r^2*h, etc., but they always just want a strapping chart. they think this shit is black magic or something. the chart is what they're used to and they don't want to learn. i quit fighting the battle and just plug the numbers in there and hand them a chart.

11/25/2013 9:19:56 AM

I was saying wow to the OP, wow at this thread.

Anytime we have to do rigging for anything those guys just use tank strapping tables too, they are usually provided from the manufacturer along with the weight of the tank. (lots of tank removals in the remediation business)

11/25/2013 10:10:11 AM

You're surprised at a math question?

11/25/2013 10:11:57 AM

NeuseRvrRat said:

Quote :

"i've tried showing them a formula, explaining pi*r^2*h, etc., but they always just want a strapping chart. they think this shit is black magic or something. the chart is what they're used to and they don't want to learn. i quit fighting the battle and just plug the numbers in there and hand them a chart."

Making unnecessary calculations (e.g. recalculating a number based on constants and inputs that are known/within a known range) just introduces opportunities for making errors, plus it's time-consuming. It's not just laziness on their part.

11/25/2013 2:23:50 PM

tank in the picture is much longer than 17 feet

11/25/2013 2:48:42 PM

The tank pictured is not the actual tank...


and dtownral can suck my left nut

11/25/2013 7:41:01 PM

This is easy. The volume of the tank does not change if there is 2 ft of water in it. You're welcome.

11/25/2013 7:42:19 PM