How do we construct things in water? Things like bridges or roads that need support pillars that go into the water. If they’re made from concrete, how does the concrete ever dry if it’s underwater? If it’s in the ocean, does the very bottom of the pillar touch the seafloor?
In: Engineering
In addition to the information of about concrete setting already posted quite a bit of that sort of thing is made from steel. Water doesn’t interfere with bolts clamping and welding underwater is commonly done.
For shallower waters things are often constructed on land then lowered into the water where they sit on or are driven into the ground under the water.
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