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The Civil Engineering
Home » How to Calculate Water Tank Capacity for a Building | Size for a Building
Building Construction

How to Calculate Water Tank Capacity for a Building | Size for a Building

By Engr Waseem RajaNovember 26, 202111 Comments8 Mins Read
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How to Calculate Rectangular Water Tank Capacity for a Building | Size for a Building

In this Article today we will cover about the How to Calculate Water Tank Capacity | Water Tank Calculation Formula | Water Tank Capacity in Litres | Water Tank Calculator | Water Tank Sizes Calculator | Rectangular Water Tanks | Water Tank Capacity | Volume of Water Tank | Water Tank Capacity Calculator | Water Tank Size Capacity for a Building | Rectangular Water Tanks | how to calculate sump capacity | 5x5x5 water tank capacity | underground water tank size in feet | 1 lakh litre water tank size | average rv water tank size


How to Calculate Water Tank Capacity and Size for a Building in Litres:

Wondering “How to Calculate Rectangular Water Tank Size and Capacity in Liters”? It’s a good question, because the answers vary depending on how much water you use! Obviously, the bigger your water tank is, the more water you can store in it. Some of the things you should keep in mind when decided how big your rainwater tank should be include: Water Tank Capacity in Litres


How Much Water Do You Need?

On average a four-person family consumes around 600 Litres per day, which comes to 120 to 200 Litres per person. But the value of the minimum water requirement has been retained as 135 Litres per head per day as Per IS Code. Water Tank Sizes Calculator

  • 50% – Outdoor use (car washing, hosing driveways, garden use)
  • 17% – Showers
  • 13% – Toilets
  • 11.5% – Laundry how to calculate sump capacity
  • 8.5% – Other (includes drinking) Water Tank Sizes Calculator

However, what sized water tank you need will depend on how you’re planning to use your tank water. It might surprise you to find that the vast majority of the water your household uses is probably outside, or in your shower, toilet or laundry. While all of the water that comes from the main water supply and into your home is treated and can be safely consumed by your family, most of it doesn’t actually have to be; basically, you don’t have to water your garden or wash your car with drinking water. Rectangular Water Tanks


Water Tank Capacity Requirement:

Be it underground or overhead water tanks the capacity calculation is essential. If you build a tank with huge capacity than the required quantity, you may not need to worry about the storage issue, but you willwaste a Lot of money in other ways. What happens if you buid a huge tank than your actual requirement? how to calculate sump capacity

  • Every time there will be some water Leftover. Storing water for a Long time will make it contaminated now the old water contamination will get mixed with the new one. There are a so health hazards.
  • Second thing, it needs to be maintained regularly. With a big tank, It becomes a headache for you. If it is underground, then you need to hire manpower often to clean it property.

To avoid such conditions you need to calculate your average daily requirement along with your scheduled water refill. According to that, you can buid an optimum water tank size with economic benefits.


Water Tank Capacity Calculation Formula:

According to IS Code 1172 (1993). the value of the minimum water requirement has been retained as 135 Litres per head per day. It varies based on the building types. Breakup of the IS assumptions:

  • Drinking – 5 litres
  • Cooking – 5 litres
  • Bathing & Toilet  – 85 litres
  • Washing Clothes & Utensils – 30 litres
  • Cleaning House – 10 litres

So we can calculate the capicity of 1 rectangular Water Tank as per the following formula:

Total Capacity of Water Storage Tank = (Number of persons X Minimum Wetter requirement) / 1000

Example Calculation:

Assume we need to calculate the size of a water tank for a residential building with 8 persons. 5x5x5 water tank capacity

Minimum Water Requirement = Number of persons X Minimum Wetter requirement = 8 X 135 Litres = 1080 Litres 5x5x5 water tank capacity

We know, 1 m3 = 1000 litres of water.

So the required storage apacity or volume for 1080 Litres = 1.08 Cubic Metre.

Now we have calculated the volume of water reqrement.

Overhead or Underground Water Tank? – It is up to you. Normally an overhead tank requires more strong support to build which affects your budget. Underground tanks, on the other hand,do not need any kind of strong support since we place it on the ground.


Water Tank Size Calculation Formula:

Area of Tank = Capicity of Water Requirement / Assume depth

L x B = Area of Tank

Take Length as 2 Times of B, so L= 2B

2B x B = Area of Tank

2B2 = ank) / 2]

There for L = 2BArea of Tank

B2 = (Area of Tank) / 2

B = Sqrt [(Area of T

Example Calculation:

For a typical family (5 members),

Total water requirement is 135 litres x 5 = 675 litres per day.

We all know Volume of water formula as 1 m3 = 1000 litres of water.

In order to get the size of the water tank, you need to mention at least one dimension (Length, Width or Depth of the water tank).

If you are planning to construct a water tank in car parking area there may be some restriction on length.

That’s the reason why we are planning to construct the underground water tank while foundation work.

From the above, volume of water formula, Volume of Water Tank

1 m3 = 1000 litres

Our requirement is 675 litres,

Therefore, 675 litres = 0.675 m3

Assuming our water tank depth as 0.6 m

Area of Tank = 0.675 / 0.6 = 1.125 m2

L x B = 1.125 m2

Take Length as 2 Times of B, (L = 2B)

Note: you can also replace your input if you know the length

2B x B = 1.125 m2

B2 = 1.125 / 2

B2 = 0.5625

B = Sqrt (0.5625)

B = 0.75 m

Therefore, L = 2B

L = 2 x 0.75

L = 1.50 m

So, for 675 Liters Rectangular Water Tank Size, L= 1.50 m, B = 0.75 m and D = 0.6 m

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How to Calculate Water Tank Capacity for a Building | Size for a Building

Water Tank Size & Capacity Calculator:

[CP_CALCULATED_FIELDS id=”9″]


FAQs:  


Q. How do I calculate my water tank capacity?

Water Tank Capacity Calculation Formula:

Total Capacity of Water Storage Tank = (Number of persons X Minimum Wetter requirement) / 1000

Q. How do I calculate my water tank size?

Water Tank Size Calculation Formula: 1 lakh litre water tank size

Area of Tank = Capicity of Water Requirement / Assume depth

L x B = Area of Tank Take Length as 2 Times of B, so L= 2B

2B x B = Area of Tank underground water tank size in feet

2B2 = Area of Tank

B2 = (Area of Tank) / 2 1 lakh litre water tank size

B = Sqrt [(Area of Tank) / 2]

There for L = 2B underground water tank size in feet

Q. How do I calculate tank volume in Litres?

Dividing the volume (in cubic centimeters) of the shape by 1,000 will give you the volume in liters (L). . So, a fish tank that is 40.64 cm long, 25.4 cm wide, and 20.32 tall has a volume of 20.975 L.

Q. What is the Minimum Requirement of Water Per Person?

According to IS Code 1172 (1993). the value of the minimum water requirement has been retained as 135 Litres per head per day. It varies based on the building types.

Q. How to Calculate the Consumption of Water Per Person?

Minimum Water Consumption is 135 Liter per day per person as per the following consumption rules:

  • Drinking – 5 litres average rv water tank size
  • Cooking – 5 litres
  • Bathing & Toilet  – 85 litres
  • Washing Clothes & Utensils – 30 litres
  • Cleaning House – 10 litres average rv water tank size

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Conclusion:

Full article on How to Calculate Water Tank Capacity | Water Tank Calculation Formula | Water Tank Capacity in Litres | Water Tank Calculator | Water Tank Sizes Calculator | Rectangular Water Tanks | Water Tank Capacity | Volume of Water Tank | Water Tank Capacity Calculator | Water Tank Size Capacity for a Building. Thank you for the full reading of this article in “The Civil Engineering” platform in English. If you find this post helpful, then help others by sharing it on social media. If any formula of BBS is missing from this article please tell me in comments.

 

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Engr Waseem Raja
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Hi! Welcome to my blog. My name is Engr Waseem Raja and I’m the author of TheCivilEngineerings.com. I am a Civil Engineer by profession but I’ve specialized and taken the journey in the field of Quality Engineering. I’ve worked as a Quality Engineer & Manager in the well-known companies in the Gulf region for almost Ten years.

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11 Comments

  1. Rajendra V on April 15, 2022 9:11 am

    Excellent job 👏 thank you for giving information about the program

    Reply
    • Engr Waseem Raja on April 16, 2022 12:11 pm

      Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

      Reply
  2. Joshua on May 2, 2022 7:53 am

    Can you make a PDF version for design and construction of rised water tanks 😊😊 that would be very helpful

    Reply
    • Engr Waseem Raja on May 9, 2022 12:00 am

      sorry i cant, Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

      Reply
  3. Pingback: How to Prepare Cost Estimate of Septic Tank

  4. Engr Muhammad Asif Jamil on June 13, 2022 8:26 am

    Good writings, i appresiate it

    Reply
    • Engr Waseem Raja on June 16, 2022 8:12 pm

      Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

      Reply
  5. Nigatu Asmare on July 6, 2022 4:46 am

    IAM happy to the water construction/designen knowledge so please helped me

    Reply
    • Engr Waseem Raja on July 16, 2022 3:34 am

      Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

      Reply
  6. Asladen Mohammed on November 29, 2022 7:56 pm

    Thank you Engineer

    Reply
    • Engr Waseem Raja on December 17, 2022 6:33 pm

      Thanks for the comments please visit more articles by clicking on “All Posts” tab of the Menu Bar

      Reply

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