372 



HYDRAULICS 



TABLE (Continued) 



PIPE SYSTEMS FOR WATER SUPPLY 



COMPUTATION OF A PIPE SYSTEM 



In the accompanying illustration is shown a typical town, 

 lying on both sides of a stream and divided into eight sections 

 by dotted lines. The elevations, referred to the adopted 

 datum, are shown by figures in parentheses. The lengths of 

 the lines and the amount to be delivered at each point such as 

 B, C, etc., are also shown. It is required to find the proper 

 size of pipes to serve such a town, assuming the population to 

 be 50,000, and the water consumption to be 19 cu. ft. per sec. 



The branch B has an elevation of 550 ft. at the point B\ 

 therefore, the piezometric elevation at Oi must be greater than 

 650, so that water may flow from Oi toward B. A 24-in. pipe 



