How are structures that are constantly in contact with water repaired or maintained? I imagine there has to be some sort of preparation or specific process for this?
In: Engineering
There is lots of work that can be done under water. For more serious work you’d set up a barrier around the work area, then pump out the water, perform the work, then fill it back up and remove the barrier.
For something like a dam you can drain the water if needed.
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