34 resultados para Construction equipment

em University of Michigan


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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

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"Supersedes TM5-9500, Principles of modern excavation and equipment, 11 August 1942."

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Includes index.

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"April 1969"--Vol. D-1.

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"September 1997."

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"August 1993."

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"August 1995."

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"1992 (Reprinted)."

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Connecticut Department of Transportation, Bureau of Planning and Research, Wethersfield

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This report summarizes the impact of Hurricane Allen (August 1980) on dune configuration, sand accretion or erosion, and changes in the vegetation on north Padre Island. Four experimental foredunes, the result of grass plantings from 1969 to 1973, and an unplanted control section were monitored in 1975-1977 and also in 1981. The 1981 posthurricane data were compared where possilbe, with the previous studies. Foredune elevation surveys were completed in March 1981; accompanying vegetation transects were made in July 1981. Hurrican Allen causes erosion of the dune face of all the experimental dunes, but caused a breach in only one dune. The beach elevations had returned to approximately prehurricane heights by the time the area was resurveyed. The unplanted control dune provided little resistance to waves generated by the storm and a large quantity of sand was deposited inland.

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Mode of access: Internet.