RDP BrainTrust Help Wanted

[JJ McClure]

Question for all the big brains out there…
Geometry was a while ago for me. So

Is there a formula to figure the square footage of a tank using the gallons of water it holds?

Thanks in advance. R

 

[LargeOrangeFont]

7.48 gallons in a cubic foot.

 

[JJ McClure]

Hmmm. Ok. Thanks. Then how do I get to square footage from cubic feet?

 

[bonesfab]

Square footage is two dimensional. volume is three dimensional. Kinda trick question.

 

[RiverDave]

Hmmm. Ok. Thanks. Then how do I get to square footage from cubic feet?

What's the shape? Square / Triangle / Round?

RD

 

[RiverDave]

Square footage is two dimensional. volume is three dimensional. Kinda trick question.

I think he meant cubic feet.

RD

 

[ltbaney1]

Hmmm. Ok. Thanks. Then how do I get to square footage from cubic feet?

Google is my go to if i cant find it in one of handbooks.

 

[LargeOrangeFont]

Hmmm. Ok. Thanks. Then how do I get to square footage from cubic feet?

What are you trying to figure out ? The square footage (area) of the outside surface?

 

[fat rat]

7.48 gallons in a cubic foot.

What’s the square footage of 30’ diameter? I got a thought.

 

[coolchange]

You can’t figure the square footage of a volume.

 

[JJ McClure]

It’s a clarifier tank at a waste treatment plant. So it’s a cylinder. I’m trying to figure the square footage to price out a coating application. The drawings are as lousy as you’d expect. But it does show the gallons the tank holds.

 

[coolchange]

Tank Volume Calculator

Calculate capacity and fill volumes of common tank shapes for water, oil or other liquids. 7 tank types can be estimated for gallon or liter capacity and fill. How to calculate tank volumes.

www.calculatorsoup.com

 

[LargeOrangeFont]

It’s a clarifier tank at a waste treatment plant. So it’s a cylinder. I’m trying to figure the square footage to price out a coating application. The drawings are as lousy as you’d expect. But it does show the gallons the tank holds.

That is where I figured you were going in the last comment. You are going to need dimensions.. or work backwards from your cubic foot number.

If the tank is 100 cubic feet, the surface area to coat would be like 240 square feet, assuming it was a square shape.

 

[thedan]

You want surface area.

 

[RIVERBORN]

231 cubic inches is a gallon

 

[JJ McClure]

Yes sir. Trying to get from volume to surface area.

 

[coolchange]

You need 2 specifications. Like volume and diameter.
A 10 ‘ diameter tank that holds 4000gals. Will be X feet long.

 

[coolchange]

That is where I figured you were going in the last comment. You are going to need dimensions.. or work backwards from your cubic foot number.

If the tank is 100 cubic feet, the surface area to coat would be like 240 square feet, assuming it was a square shape.

No it’s not. A tank 1’X 1’ x 100’ is not 240 sq ft.

 

[LargeOrangeFont]

No it’s not. A tank 1’X 1’ x 100’ is not 240 sq ft.

That’s true. That would be 402 I guess.

I was thinking 10x10x1 - 240 sq ft on the surface.

You need the dims!

 

[OC Mike]

You need at least one dimension.

Volume = (Pi)radius squared X Height
Surface area should Circumference X Height.
Circumference is (pi)diameter

Get the diameter, radius or height and work it out.

 

[JJ McClure]

Thanks RDPeeps. I think I got it.

 

[Captain Dan]

Rob,
I'm a civil engineer and I can calculate what you are looking for, or at least confirm your findings. Send me a PM if you'd like. I'm assuming that you need to apply coating to the sides of the cylinder, and the bottom, and maybe the top. As OC Mike mentioned, besides the volume, you at least need to know the radius, diameter, or height of the cylinder and the rest is easy peasy.

 

[JJ McClure]

Thanks Captain. Working on some numbers to crunch. Catch up with you tomorrow.