McGraw-Hill Construction has launched the new Dodge Momentum Index, which is designed to be an accurate indicator of future construction put-in-place data published by the U.S. Dept. of Commerce. In designing the new index, MHC looked at over a decade of monthly data and discovered that Dodge's planning figures can predict non-residential building put-in-place 12 month ahead with a 91% accuracy rate. Since last July, the index has trended up in all but two months.
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.