Equal parts transportation-planning compendium, autobiography and love letter to New York City, "Street Smart" (Perseus Books Group) lays out Sam Schwartz's vision for the future of multimodal and multinodal transportation systems.
When requesting a time extension, most construction contracts require the preparation of a time-impact analysis (TIA), in which unanticipated or changed work is inserted into the schedule to demonstrate what impact the change will have on the schedule.
Nearly a decade before the Brooklyn Bridge opened for business, tunnelers successfully bored 25,081 ft, or roughly five miles, through the Hoosac Mountain in western Massachusetts. For more than 40 years after opening in 1875, it was the longest tunnel in North America.
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.