Great American Levees a Comparative Report On Flood Protection in the Mississip
Great American Levees a Comparative Report On Flood Protection in the Mississip
Dozier Tibbetts Haviland
The book Great American Levees a Comparative Report On Flood Protection in the Mississip was written by author Dozier Tibbetts Haviland Here you can read free online of Great American Levees a Comparative Report On Flood Protection in the Mississip book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Great American Levees a Comparative Report On Flood Protection in the Mississip a good or bad book?
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The principal methods are shown on Plate 4. The levees along the Mississippi River usually have a top width not exceeding 8 feet which does not permit a raise exceeding about 3 feet as a maximum. When there is sufficient time, and the rear slope and adjacent ground is not too greatly weakened by saturation, the best method is to top the levees with earth taken from borrow pits beyond the inner toe of the levees. This work can be most cheaply done with teams and scrapers. In many cases, however,... the saturation of the rear slope makes it dangerous to work with teams, and hence the topping has to be done by hand, or with wheelbarrows. In other cases observed, the land to the rear was so saturated that material had to be borrowed from the banquette or rear slopes. Even where the top width was as narrow as 8 feet, the topping was 18 FIGURE 10 Levees of lower Yazoo District near Brunswick, Miss. , topped with sacking, partially backed with earth (water has fallen as a result of the Alsatia break ).
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