CHAPTER V 



STORAGE AND DISTRIBUTION 



WE now come to consider works necessary in con- 

 structing reservoirs and tanks for the storage of water, 

 either from a natural source or from pumping 

 engines. 



It will sometimes be found that a spring or river 

 is at such an elevation that if a tank or reservoir be 

 formed, water therefrom will flow to the source of 

 supply and still have adequate pressure at that 

 supply without pumping, which of course is a very 

 desirable state of affairs. In other cases the river or 

 stream may require damming back for the purpose of 

 supplying a hydraulic ram or providing head water 

 to a turbine, or even a supply for a pump to draw 

 from. In any case, where water has to be pumped 

 it is very desirable to store the pumped water in 

 some form of tank or other in order to provide 

 against breakdown of the machinery, and in the case 

 of windmills, very calm weather, while the provision 

 for fire must not be lost sight of; and as some 

 water will want filtering, the construction of small 

 filters will find consideration in this chapter also. 

 Reference has already been made to a form of 

 wooden dam which will be useful under many 



(in) 



