Nils F. Ambursen February 6, — January 17, was a Norwegian-American civil engineer and inventor. He was the founder of Ambursen Hydraulic Construction Company and was known for his influential dam designs in the early 20th century.

Ambursen came to the United Ambursen Hydraulic Construction Company by the age of Working for the B. Sturtevant Company in Hyde Park, BostonMassachusettsinAmbursen developed an innovative concrete slab and buttress dam for an industrial client in TheresaNew York. Ambursen's concrete-slab-and-buttress design used far less material than a traditional gravity dam making it both a significant engineering advance and cost effective for clients.

Ambursen promptly filed a patent on his own behalf and organized the Ambursen Hydraulic Construction Companybased in Boston. The record-breaking meter-tall foot La Prele Dam in Converse County, Wyoming used 43 percent less concrete than an equivalent concrete gravity dam. The company sued to preserve its patents fairly aggressively but with mixed success.

Civil engineer George Freeman received his own November patent on a modified version of the concrete buttress dam used there. In Ambursen left his company, which has Eversendai Company Profile to bear his name for over a hundred years.

From Wikipedia, the free encyclopedia. Biography portal Engineering portal. Archived from the original on June 3, Retrieved March 1, Norsk samfunnsvitenskapelig datatjeneste AS. Sturtevant History". Sturtevant Division of Westinghouse. Retrieved August 1, United States Society on Dams. Building the Ultimate Dam: John S. Eastwood and the Control of Water in the West. Great American Bridges and Dams.

Volume April 1, Blue Earth County Historical Society. White Largest School Uniform Company Valley Historical Quarterly. Categories : births deaths People from Fredrikstad People from Skien People from Boston American civil engineers American company founders American inventors American patent holders Concrete pioneers Norwegian civil engineers Norwegian inventors Norwegian emigrants to the United States 19th-century Ambursen Hydraulic Construction Company people 19th-century American engineers 20th-century American engineers.

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