How bad is the flooding, Joe? That's what I wanted to know during a cell-phone call in the days after Sandy hit. I was talking with a long-term tenant of mine, a retired fire chief, about the condition of the small apartment building I own in Ventnor, a hard-hit New Jersey shore town."Two feet," Joe answered. The building sits on high ground, but when the electricity died, so did the building's sump pump. Two feet of water is one foot beyond the threshold to flood our elevated boiler system, which likely would deprive my tenants of heat and hot water—that
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.