How to Calculate Rectangular water tank size | Capacity water tank Calculation

How to Calculate Rectangular water tank size:

IS per code 145 litres person in one day

drinking -5 litres

cooking- 5 litres

bathing and toilet -85 litres

washing clothes and utensils-30 litres

cleaning house-10 litres

approx joint family is using 800 litres in one day

volume of water 1m3 = 1000 litres of water

                        1 litre = 0.01 m3

                800 litre = 0.08 m3

assume our water tank depth as 0.6 m

            area of tank = 0.8/0.6

                                = 1.34 m2

                       l ✕ b = 1.34

 take length as 2 times b, (l=2b)

                     2b ✕ b= 1.34m2

                     taking square root, b

                              b= 0.67 m

   area of rectangular = l=2b

                            l = 2 ✕ 0.81

                           length = 1.62 m 

Result:

 L=1.62 m

B=0.81 m

D=0.6 m