CHAPTER VII 



POWER-HOUSE DESIGN 



1. BUILDING 



General Design. The design of power-houses differs greatly, 

 depending on the conditions which are to be met. It is affected, 

 to a very great extent by natural conditions such as the location 

 with respect to the stream, the condition of the soil, etc. Low 

 and high-head developments require different types of turbines, 

 and these may furthermore be of a horizontal or vertical con- 



FIG. 87. Power House, Mississippi River Power Company, Keokuk, Iowa. 



struction, necessitating entirely different layouts. The number 

 and capacity of the generating units is obviously a determining 

 factor, and the location of the development is generally such that 

 a high-tension transmission is necessary so that provision must be 

 made for housing the transforming and high-tension switching 

 apparatus. 



In designing the building, the arrangement of the apparatus 

 should naturally be given first consideration, but this does not 

 mean that the architectural features sould be neglected. It is not 



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