Place up to 140,000 cubic yards of tremie concrete to construct a 2,700-foot-long concrete dam across the Ohio River without draining the water. Located on the Ohio River that begins in Pittsburgh and ...

When concrete shells are constructed, they usually have to be supported by elaborate timber structures. A revolutionary technique developed at the Vienna University of Technology now uses inflatable ...

Let's think of a paper sheet. If we tried to stiffen it from its primary state, it couldn't support its own weight. However, if we bend it, the sheet achieves a new structural quality. The shells act ...