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How to Calculate The Capacity of Water Tank And Construct Any Shape of Tank For A Specific Capacity

Updated on August 26, 2011

simple calculations

Generally water is stored either in a cylindrical tank or in a square tank. We can easily find out the capacity of water storage tank of any size in liters. For eg. if you want to find out the capacity of a square water tank measuring 1m length, 1m breadth, 1m height, first convert meter to cm. As the formula to find out the volume of cube is a^3 we can get answer as 1000,000 cc (1 m = 100 cm)

1000 cc is 1 liter

Therefore above said cubic tank can hold 1000 liters.

By this same method we can easily calculate the capacity of tanks in various sizes.

How to Construct Any Type of a Water Tank for a Specific Capacity

We can easily construct any type of water tank like cylindrical, cubical and rectangular for a specific capacity. For instance, if you want to get measurements of tank in any shape to store 5000 liters, you will feel easy with following examples. But, you need to count only inner measurements of tanks to get accurate answers.


Let us try to find out the side of a cubical tank to store 5000 liters.

Formula for the volume of a cube = a^3, a = the side of cubical tank

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore a^3 = 5000,000 cc

The side 'a' = (5000,000)^1/3 = 170.99 cm


Similarly we can find out the measurements of a rectangular tank holding 5000 liters

Formula for the volume of a rectangular tank is l*b*h

Say the length is 1.5 times breadth and the height is equal to breadth

Now the volume of the tank can be written as 1.5*b*b*b = 1.5*b^3

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore 1.5*b^3 = 5000,000 cc

Now 'b' will come as [5000,000/1.5]^[1/3] = 149.38 cm

Now we can easily get length, breadth and height of the tank as follows, l = 224.07 cm, b = 149.38 cm, h = 149.38 cm which can hold 5000 liters of water


The same way we can easily design a cylindrical tank to store 5000 liters

Formula for the volume of a cylinder is 3.14*r^2*h

Say height is 2 times radius of the tank

Now the volume of the tank can be written as 3.14*r^2*2*r = 6.28*r^3

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore 6.28*r^3 = 5000,000 cc

Now 'r' will come as [5000,000/6.28]^[1/3] = 92.68 cm

Now we can easily get height and radius of the cylindrical tank holding 5000 liters as follows, h = 185.36 cm and r = 92.68 cm

You can also try to find out the measurements of tanks for different capacities.

Comments

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  • profile image

    Deepak8426 2 years ago

    Dear Sir, i have to create 3000 ltr of water tank with 5 ft length, 3 ft breadth, i cant understand how much it's depth to store 3000 ltr water. please suggest.

  • PRAVEEN2015 profile image

    PRAVEEN 2 years ago from BANGALORE

    Hi,

    I need find out the my UGR tank capacity Width: 24f.4'' ,Lang ht 32f.6'' and Hight 8f.1'' pls replay me

  • profile image

    pragneshprajapati 3 years ago

    hello sir,

    how r you,

    i want to calculate thickness of of h.d.p.e plastics tank as per capacity. my tank capacity is 60 kl = 60,000 litre, so how much wall thickness get for this tank, tank size: approx 4 mtr dia x approx 4.8 mtr heigh.

    but its thickness = ? , i dont know

  • ratnaveera profile image
    Author

    ratnaveera 5 years ago from Cumbum

    Hello sdhiman111, Thanks for visiting this page. Thickness is depending upon the material used for the construction. 5 mm wall thickness will be enough for the ms tank.

  • sdhiman111 profile image

    sdhiman111 5 years ago

    I want calculate the thickness of body plate to store the 5000 ltr. water in tank

  • profile image

    ARIF JAAN 6 years ago

    Dear i want to calculate the cost of water tank e.g.

    its capacity is 50000 gallons i want to know that if i sell a 20000 gallons the remaining 30000 gallons know i need a per cost of that anyone please help me thanks

  • profile image

    shamskpm 6 years ago

    Hi, Ratna,

    Im Shams, our house is under construction. we prefer to use ceramic disc shower mixers in the bath rooms. I wish to know the ideal height for an Overhead Tank from the roof height of +680Lvl. or please advise us for an economical solution to get the right pressure in all mixers especially in first floor.

    shahana.shams@gmail.com

  • profile image

    subhash7 6 years ago from KSA

    Hi, Ratna ..

    i am working in fiber glass company as draughtsman. And i want to know TANK calculations each and everything in simple way our metric in meters and letters if can mail send a mail to me sureshgiri.gs@gmail.com.

    So i hope u can help me out of this.

  • profile image

    ayadi ariyo 6 years ago

    thanks for your reply

  • profile image

    ayadi ariyo 6 years ago

    i am a welder based in tank construction i just need a simple formular for calculating the volume of a tank.kindly send it to my email ayadiariyo@yahoo.com

  • profile image

    shaik  6 years ago

    I need to known the tank capacity for my fire pump which is 120gmp. can any help me regarding this

  • ratnaveera profile image
    Author

    ratnaveera 6 years ago from Cumbum

    Dear sujay, It's very easy to calculate the size of a rectangular tank that can hold 27000 liter. The formula to the volume of a rectangular tank is l*b*h. Say the length is 2 times breadth and breadth is equal to the height. Now 2b*b*b = 27000 liter

    b^3 = 27000/2

    b^3 = 13500*1000 cc

    Therefore

    b = 238.11 cm

    l = 476.22 cm

    h = 238.11 cm

    That's all.

  • profile image

    sujay 6 years ago

    dear sir i have 27000ltr capcity how to find size of rectangular tank

  • profile image

    Maldonagus 7 years ago

    How do i know the pump on and pump off level of an existing hydro tank and level on level off of a water storage tank

  • profile image

    satish 7 years ago

    if i have 0.02cc cartridge then how much fluid will pass through that cartridge. pressure variation can be effect on volume of fluid

  • profile image

    faheem 7 years ago

    hello ma'am...i need to design an overhead steel square water tank of size 2m x 2m x 2m at a height of 3mts...

  • profile image

    bhanu 7 years ago

    Mam, I want to calculate the capacity of concrete bucket having upper diameter 700mm, lower diameter 400mm & height 550mm. please tell me as soon as possible.

  • ratnaveera profile image
    Author

    ratnaveera 7 years ago from Cumbum

    Dear trix, Thank you for coming here and your nice question. Here is your answer

    1 GALLON = 4.54 LITERS

    Your required tank capacity is 20000*4.54 liters = 90800000 cc

    your cylinderical tank height is 15 ft = 450 cm

    Formula for the volume of a cylinder is 3.14*r*r*h

    Now substitute the values

    90800000 cc = 3.14*r*r*450 cm

    r*r = 90800000/[3.14*450 cm]

    r*r = 64260.438

    r = 253.49 cm

    You can check out it now! The r value is correct to my knowledge. Thanks again! You are always welcome friend!

  • profile image

    trix 7 years ago

    i used your method to calculate the height of my cylindrical tank if i want to calculate the head how would i go about this i got 15 feet for the height and the capacity of the tank is approximately 20000gallons

  • profile image

    Tom 7 years ago

    Here is a easy way to figure it out! http://volumeformula.org/cylinder.html

  • ratnaveera profile image
    Author

    ratnaveera 7 years ago from Cumbum

    Dear Sanjay, Thank you for your question. Could you tell me what shape of tank to be constructed?

  • profile image

    sanjay 7 years ago

    Dear Ratnaveera, I want to construct 100000 Liters water tank for our nursery can you suggest me dimensions for the tank and design?

  • profile image

    bhanu 7 years ago

    thanxxxxx a ton mam.... !!

  • ratnaveera profile image
    Author

    ratnaveera 7 years ago from Cumbum

    Dear bhanu, Say height is 2 times r. Then formula to find out the volume of the cylinder is 3.14*r*r*2r which equals

    20000000 cc. Therefore 20000000/6.28 = r^3. Now radius of the tank can be calculated as 147 cm and height as 294 cm

  • profile image

    bhanu 7 years ago

    hello, i want to make 20tons capacity cylindrical tank. so what is the formula and dimensions, radius and height.

  • profile image

    Santhosh Kumar 7 years ago

    Dear sir Wat is CFM

  • profile image

    chandu2373 7 years ago

    Dear Ratna can u help me up with this how can i calculate

    volume of an elliptical cylinder in litters where i am having all the three sides i.e length of tank is L-289.5cm, width of tank is W-193cm, height of tank is H-134.6cm

  • profile image

    Karthikeyan 7 years ago

    Good and useful..

  • ratnaveera profile image
    Author

    ratnaveera 7 years ago from Cumbum

    Dear Shadab, Thanks for your nice question. CC means cm cube. That is cm x cm x cm.

  • profile image

    Shadab 7 years ago

    Ratna What Is CC?

  • profile image

    143 7 years ago

    8x6x15 sized tank=? liters

  • profile image

    dheeraj 7 years ago

    I have an underground tank and want to calculate that how much liters of water it contains. So, please tell me how can I get to know its capacity. For your help I have taken measurement as breadth=4 inch length=5 inch and height=6 inch. Please reply on id as dheeraj142@yahoo.co.in

  • profile image

    noman 7 years ago

    thnx for the help.. and can u tell me water flow mainaining formula?? eg i have to get 2 ltr per second water from over head tank to ground tank..and same flow for ground tank to over head tank..

  • ratnaveera profile image
    Author

    ratnaveera 8 years ago from Cumbum

    Dear noman, Happy to know that my answers are helpful to you. I am a chemical Engineer. I am not sure about helping you on mechanical field doubts. Any way you ask your questions and let us try!

  • profile image

    noman 8 years ago

    Thnx Buddy..

    which field u r related to?

    if i need to ask any formulae related to mechanical field..

    can u help me?

    Thnx again

  • ratnaveera profile image
    Author

    ratnaveera 8 years ago from Cumbum

    Dear noman, Thanks for your questions. The formula to find out the volume of a cylindrical tank is 3.14*r*r*h, r=radius of the cylindrical tank and whereas h=height of it.

    First you need to convert measurement of tank into cm. Then only you get easily the quantity by volume. For eg. if r=100 cm and h=150 cm. The quantity of that cylindrical tank is coming as 4710000 cc that is 4710 litres.

    The formula for the square tank is a^3, therefore a^3=5000000 cc, a=170.9 cm Once again thanks for your questions. Hope this would be useful for you!

  • profile image

    noman 8 years ago

    Hi..

    if i need to take out the capicity of cylindrical tank then which formula i shud use??

    and 2nd thing.. for eg if i have to design a square tank for 5000 ltrs water then which formula i have to use??

  • profile image

    Amrith 8 years ago

    Nice stuff !! This helped me .. Thank you very much !

  • ratnaveera profile image
    Author

    ratnaveera 8 years ago from Cumbum

    Dear Ragu, Thanks for your question. First you need to convert 200000 litres into cc and it'll come as 200000000 cc. If it be a square the side of the tank would come as 584.8 cm. If it be a rectangular tank with length 1.5 and height 1 times breadth, then the formula to find out the measurement is 200000000 cc= 1.5b*1b*1b

    = 1.5b^3

    Therefore b= 510.8 cm l= 766.2 cm h= 510.8 cm

  • profile image

    Ragu 8 years ago

    Hi,

    I just like to know how to calculate the capacity for 200000 ltrs in rectangular tank. kindly reply please

  • ratnaveera profile image
    Author

    ratnaveera 8 years ago from Cumbum

    Dear khurshed, First you need to convert the measurement into cm. For eg. if you have 2 m breadth and 1 m height and 3 m long tank. You need to convert them into cm as 200 cm, 100 cm and 300 cm. Now you will get the volume multiplying them l*b*h, 200*100*300=6000000 cc (i.e) 6000 litres

  • profile image

    khurshed 8 years ago

    hi i have 6000x3000x3000 water tank i want to know the volume of total please reply

  • profile image

    sks 9 years ago

    nice info thanks

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