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I am busy with a tank that is submerged in water. The tank is mounted against concrete wall isolating the water. The tank is pressed against the wall due to the water pressure. When the tank is installed the water can be pumped away.

The material used for the tank is stainless steel. The pressure acting on the tank wall I used the statics pressure part of Bernoulli equation. Knowing the pressure is also known the distributed force over the tank wall. I assumed that the plate can be approached as a small beam.

I made two load cases:

- Loadcase1: is based over the length of the tank in the lower section of the wall (where the load is at its highest point, disturbed load rectangular)

- Loadcase2: Is based on the height of the tank. ( due to Bernoulli a Triangular load.).

I calculated the reaction force in both cases and also the maximum bending moment in the plate. I used the maximum bending moment to determine my dimension of my profile to support the tank.

My question is am I allowed to calculate the tank like this and if I am not allowed to use this method what method should I use to calculate a case like this? I am allowed to approached sheet metal as a small beam?

I added my calculation and drawing in the attachment.

Thanking you in Advance

Gunter.

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# Submerged Tank

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