We will explain here how to work out the size and capacity of a water tank with a rectangular or square shape.

Use following formula to find out volume of tank

Volume of tank = Length x Breadth x Height

Length is taken as = 12 feet; breadth is taken 8 feet; height is taken as 6 feet

So, volume of tank = 12 x 8 x 6 = 576 cubic feet

You can find out quantity of water in 1 cuft in the following ways :-

Density of water = 1000 kg/cum

1 cum = 1000 litres (1000 kg)

1 cum = 35.3198 cuft

Therefore, the quantity of water in 1 cuft = 1000/35.3198 = 28.31 litres

Therefore, weight of water = 576 x 28.31 = 16307 litres = 16307 kg

When the dimension is provided in meter, multiple volume with 1000 to get the amount in liters.

With adherence to IS code, 135 litres is required for each person each day. Split of the IS assumptions :

Drinking – 5 litres

Cooking – 5 litres

Bathing & Toilet – 85 litres

Washing Clothes & Utensils – 30 litres

Cleaning House – 10 litres

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