192 middlebrooks. EARTH DAMS [Ch. 10 



for clean granular materials to about 2.0 for highly cohesive clays is 

 needed. 



Most geologists may not be interested in the soil mechanics features 

 that have been included in this discussion; however, they have been 

 included to encourage greater interest in this field among geologists. 

 It is considered most important in the design and construction of earth 

 dams that the geologist at least understand the general principles of 

 soil mechanics and that the soils engineer have a broader understand- 

 ing of the effect of geological features on the application of the soil 

 mechanics principles. 



REFERENCES 



Corps of Engineers (1949). Slope protection of earth dams: U. S. Waterways 



Exp. Sta., Vicksburg, Miss. 

 Creager, W. P., Justin, J. D., and Hinds, J. (1945). Engineering for dams: John 



Wiley & Sons, New York, vol. 1, 245 pages. 

 Middlebrooks, T. A. (1948). Seepage control for large earth dams: Proceedings 



of Third International Congress of Large Dams, Stockholm. 

 and Bertram, G. E. (1948). Corps of Engineers practice on earth dams 



design and construction: Proceedings of Second International Conference on 



Soil Mechanics, Rotterdam, vol. 7 

 Philippe, R. R. (1948). Adoption of locally available materials for use in con- 

 struction of earth dams: Proceedings of Second International Conference on 



Soil Mechanics, Rotterdam, vol. 4. 



