It actually has quite a bit, but the dam structure itself did not require much because it doesn't have any tensile forces going on, since it is a horizontal arch.Hoover dam has neither
Yes, put in rebar and it’s stronger in tension, until the rebar fails from corrosion. Roman concrete structure s last thousands of years without it.It actually has quite a bit, but the dam structure itself did not require much because it doesn't have any tensile forces going on, since it is a horizontal arch.
What you gotta remember is that concrete is strong in compression(which is the type of load Hoover Dam puts on it) but weak in tension. In other words, if you have a long piece of concrete supported on each end, it is real easy to break by applying a load to the center. Put a rebar in the bottom of it: much stronger.
Yes. Tells you 1. a lot of jobs and money invested in rebar steel, 2. rebar Steel corrosion insures maintenance contracts some decades down the road for every single structure ever built with it, and 3. the construction industry is infamous for being slow to change until absolutely forced to do so.Even the fiber mesh manufacturer's have stopped trying to sell the stuff as a replacement to steel, which it never was. That should tell you something.........