Uh, you should consult a structural engineer or civil, my world, the retaining wall on the floor, no water, and the wall to escape, to get the water wall and reduce congestion. If you have a design treatment tank or a wall against the flood, which has a different fish. If you do not talk about sealing the walls and cry more holes are available every 20 meters or less, drain pipes in the upper wall.
Uh, you should consult a structural engineer or civil, my world, the retaining wall on the floor, no water, and the wall to escape, to get the water wall and reduce congestion. If you have a design treatment tank or a wall against the flood, which has a different fish. If you do not talk about sealing the walls and cry more holes are available every 20 meters or less, drain pipes in the upper wall.
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