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Volume calculation assistance! Picture added.

cybrfire

cybrfire

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OK, drawing a blank on this one, I can't for the life of me remember how to calculate this.

Volume of a cylinder

26" in diameter x 62" in length is 142 gallons +/-.

Now take 7" off the top of the 26" diameter circle the entire 62" length. What's the volume now?


tankj.JPG


New tank shape
 
Last edited:
bore x bore x stroke x .78 = cid. figure your original, than the new. Back track by percentage to find new gal calc.
 
so it's 55" long now ( 62-7) and 26" round = 29000.4 cubic inches
was 32691.36 cubic inches = 142 gallons

231 cubic inches in a gallon.

so 125.5 gallons
 
You calculations will be different if the cylinder is laying down or standing up. So is the cylinder standing 62" tall or 26" tall.
 
I think I got it. 111 gallons.

It is a 26" diameter tube lying down. 62" long.

Bedside to bedside.

Took the top 7" off to keep it level with the top of the bedsides.

Should be 111.
 
4X4HIGH said:
You calculations will be different if the cylinder is laying down or standing up. So is the cylinder standing 62" tall or 26" tall.
Click to expand...


diameter is round length is flat so we should be right unless it was 62" diameter.
 
how would it measure different if it was laying down if you have a 110 gallon tank and tip it over, shouldn't still hold 110 gallons (minus the new dents,LOL)
 
Think about this for a minute. If you have a cylinder (in this case 26" diameter) and it's 62" long and that cylinder is standing 62" tall and you remove 7" from the top of the cylinders' contents it will be less than if you removed 7" of contents from the 62" length of the cylinder.

I hope you guys understand what i'm saying

Ok after doing a quick search if you lay a 62" long by 26" diameter cylinder on it's side and have it full it is 339.78 gallons.

Here is where i did the math. http://aqua.ucdavis.edu/Calculations/Volume_of_a_Cylindrical_Tank.htm
 
now I got you. but it is no longer round so the calc's will be off.

if he cut 7" of steel off of it then it would be pretty close to 19" round but if he just capped the top so it is flat with the bid sides then it is smaller yet.
 
Picture on original.

My calcs bring me to approx. 111 gallons. So, if the fill neck is submerged 2" below the surface it should be full at 99 gallons.

check my math guys!
 
55Willy said:
now I got you. but it is no longer round so the calc's will be off.

if he cut 7" of steel off of it then it would be pretty close to 19" round but if he just capped the top so it is flat with the bid sides then it is smaller yet.
Click to expand...

You are starting to understand but the first inch removed is less than the next inch and so on because the radius of the 26" diameter is not being changed, only horizonally cutting off 7" on the entire length.
 
Calculations
line_left_01.gif
line_mid_01.gif
line_rite_01.gif
Volume of a Cylindrical Tank​
Enter values for the cylindrical tank and the program automatically calculates the rest. Height 26"​
Base 62"​

Inch Units​
Diameter Measurement type is equal to:​
339.78 Gallons​
Liters Based on the formula: Volume of Cylinder = π r2 · h​
 
Numbers are just swapped in that calculation Scott. I'm all back on track now though.
 
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