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I got a common doubt regarding the pressure at the bottom of a open tank filled with water.

1) Assume a tank of 2m height, filled with water. So the hydrostatic pressure at the bottom of the tank will be 0.2 bar(rho*g*h). Wondering!! it is less then atmospheric pressure(1 bar).

2) So do i need to include the atmospheric pressure for my stress calculation, which is 4 times greater than the hydrostatic pressure.

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# Hydrostatic pressure -tank

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