3 ms·
How much the tide varies in any given area is well-known, you just take that into account when deciding how high to make the ceiling.
by avar 10y ago
How much the tide varies in any given area is well-known, you just take that into account when deciding how high to make the ceiling.
- mnw21cam 10y agoPresumably the tide isn't ever sufficiently different on either side of the tunnel to cause a large current through the tunnel.
- caf 10y agoIt has a significant east-west displacement so you'd think there would be some tidal flows.
- jmcdiesel 10y agoBut a storm surge would be unpredictable, right? How do the physics of "crushing" a boat by raising water level in a confined space work?
- avar 10y ago> But a storm surge would be unpredictable, right? No we know what sort of storm surges are 10, 100, 1000 year events etc. At that point it's just a question of what you design the tunnel to withstand. > How do the physics of "crushing" a boat by > raising water level in a confined space work? This is an elementary application of Archimedes' principle. The weight of the ship is equivalent to the weight of the water it displaces[1]. If the ship is stuck against the ceiling of a confined space the pressure it's excreting on the ceiling is going to be the equivalent to the displacement of that "extra" water. 1. Leaving aside the full calculation which takes the difference in the weight of air & water into account for the purposes of this explanation.