concrete under water
concrete under water
(OP)
I'm using concrete for a mooring for my boat, which will be moored in a salt water harbor off the Atlantic Ocean. I have approximately 700 pounds of mixed concrete in different column lengths. Does concrete lose some weight when placed under water due to bouyancy or any other issue? If so, how much will that 700 pounds weigh when submerged?





RE: concrete under water
RE: concrete under water
RE: concrete under water
RE: concrete under water
RE: concrete under water
The downward pressure above is more than offset by the upward pressure below that decreases the effect of the mass.
RE: concrete under water
RE: concrete under water
RE: concrete under water
RE: concrete under water
RE: concrete under water
http://en.wikipedia.org/wiki/Fluid_statics
another good example which illustrates the affect of bouyancy is an aircraft carrier. It is constructed almost entirely of steel. It can carry a fleet of 85 airplanes and three thousand men. It weighs literally thousands of tons, yet it floats due to the bouyant force of the water which is displaced by the hull. In fact, the displacement is actually specified at full load for a Nimitz Class carrier at about 97,000 tons.
http:
RE: concrete under water
I didn't run the numbers, but civilperson's analysis looks correct.
RE: concrete under water
Both civilperson and DRCI had good numbers, depending on what you assume for the unit weight of the concrete (that is another thread). The other answers were all good, but maybe they did not post numbers because of liability and other professional reasons. Since I have retired, I am now considered an amateur that cannot calculate, but I still have my honorary "Doctors" degree from somewhere in China.