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I was working on a diesel fueling platform today, eyeballing up the size of the storage tanks to look right for the project. I felt that 2 tanks for #2 oil were needed and 1 for lube oil would work out fine. I cut up some heavy card board cylinders to size, they will be covered by a styrene wrapper with rivet detail on it. Then I wondered what the capacities of the tanks were? I racked my brain for a while trying to remember some 5th grade geometry, it seams that my old age (35  ) has to crept up on me when I wasn't looking. I just can't remember how to find the square footage of a cylinder and convert it to gallons. Please help..... the measurements are : diesel fuel- 29 feet in diameter x 13 feet high
lube oil- 13 feet in diameter x 11 feet high
Thanks
My other car is a locomotive, ARHS restoration crew
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Ummm.......Let me see....1+1 is 3.
My 48 year old mine is in worst shape.
Just a guess....You'd first have to know how many gallons are in a square foot.
I'm sure someone smarter, and has more degrees than I do can help.
Torrington, Ct.
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I went to my Happy Place, but it was closed for renovations.
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I'm going to do this without googleing, just to see how close I am. The area of a circle is Pi X radius squared so the 29 ft diameter tank would have a 14.5 ft. radius. That would be 210.25 X 3.1416 =660.5214 X 29 (length=19155.12 cu ft X 8 gal per cu ft =153240.9648 Gallons
Am I close?
Charlie
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Let's see here...
Volume of a cylinder is Pi(RR)H
7.48 gals in 1CUFT
So 3.14(14.5x14.5)13 is 8582.4 CUFTx7.48= 64,196 gals diesel
3.14(6.5x6.5)11 is 1459.315 CUFTx7.48= 10,915 gals lube oil
I think...  Thank goodness for fire dept. pumps class!
Dave
-Dave
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if i did it right in head diesel is 64,229 oil is 12,890. rounded to closest gallon.
Jim
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I don't know if your rite I checked my sons text book but there not up to this type of work in the 3rd grade.  I'll check with some guys at work tomorrow.
My other car is a locomotive, ARHS restoration crew
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Yes I screwed up I used the diameter for the length...da...That is why I don't like math any more. They keep changing it.
It's nice to be wrong.
Charlie
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All right I went to ask.com and came up with these #'s . I left some room for expansion of the fluids for safety. "  I don't need any HO scale explosions "
lube oil 43,650 gal.
#2 oil 256,580 gal.
My other car is a locomotive, ARHS restoration crew
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Jim and I came up with roughly the same answer, the difference can be accounted for by how many decimal places we used in our math. 43,000 and 256,000 seem like rather large numbers, how did you figure it?
Think of the size of an HO scale 10,000 gal tank car. How big are your tanks in comparison?
Dave
-Dave
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Puddlejumper Wrote:Jim and I came up with roughly the same answer, the difference can be accounted for by how many decimal places we used in our math. 43,000 and 256,000 seem like rather large numbers, how did you figure it?
Think of the size of an HO scale 10,000 gal tank car. How big are your tanks in comparison?
Dave you used the more precise formula i just figured the sq ft area times height.
jim
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Hi...Dave has the right answers.....(I do too.... )....
Gus (LC&P).
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Dave & Jim are right...
Diesel tank
29 Dia / 14.5 radius
13 High
Lube Oil tank
13 Dia / 6.5 radius
11 High
1 cubic foot = 7.48 US gallons
Volume of a cylinder
(Pi*R^2)*Height
Diesel tank
3.14*14.5^2*13*7.48
~ 64,200 gallons
Lube Oil tank
3.14*6.5^2*11*7.48
~ 10,900 gallons
Your 43,000 and 256,000 calulations sound like it's roughly the capacity in litres (conversion factor 3.78 litres/US gallon).
Andrew
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I agree, Jim and Puddlejumper are right.
Charlie.
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No, I just messed up and used the diameter for the radius in my calculations 
Here are the 2 fuel tanks, the lube tank, and pump house under construction. I threw in a tank car for comparison.
My other car is a locomotive, ARHS restoration crew
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Well that was a fun exercise...
Those look like a good beginning to a fuel storage facility. Keep us posted. 
dave
-Dave
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