Calculations

For the tank:     For the tank

 

For the Drain:   For the Drain

 

For the Filter:

Note on the Filter:

For water to be sufficiently filtered through gravel, sand and clay, a sufficient  pressure is required, in the range of 1 bar, gage pressure.

For this to be achieved by gravity, the filter has to lie at a given depth under the manifold.

Gage Pressure  = Density  x acceleration gravity x Depth

Hence:

!00,000 = 1000 x 9.81 x Depth

Depth = 10.19 meters

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