J. Augustine DeSazilly

Engineer, Person

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Who is J. Augustine DeSazilly?

J. Augustine DeSazilly was a French engineer.

In the early 1850s, DeSazilly published a paper postulating the "profile of equal resistance," a major theoretical advance in the technology of masonry gravity dams, based on the hydrostatic force exerted by a given height of water in relation to the weight of masonry used in the dam's construction. DeSazilly considered two extreme conditions, a filled reservoir and an empty reservoir, and created a model for equalizing stresses on the masonry across every horizontal cross section. He developed a vertical cross section in which the stresses at the upstream face of a masonry gravity dam with the reservoir empty are equal to those at the downstream face with the reservoir filled. His hypothesis provided a means of calculating the minimum amount of material that could be used while assuring stability. Although he himself never carried out the construction of a dam on this "profile of equal resistance," it was used in 1858 to build the Furens Dam across the Loire River.

DeSazilly also developed a process of surface drainage for building on a slope, and contributed to the building of railways, roads, and bridges.

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on July 23, 2013

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"J. Augustine DeSazilly." Biographies.net. STANDS4 LLC, 2021. Web. 27 Nov. 2021. <https://www.biographies.net/biography/j.-augustine-desazilly/m/0cp19_6>.

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