132 



SEWER DESIGN 



A list of actual sewer-gagings, so far as have been made 

 public, was compiled and published in Engineering News, Vol. 

 XXXV, p. 131, in a paper on sewer-gaging of Des Moines. 

 The table is given on p. 130, Table XIX, with gagings of the 

 outlet sewer at Canton, O., Chautauqua, N. Y., Cadillac, 

 Mich., and Gloversville, N. Y., added. Two columns have 

 been added to the table, one giving the percentage by which 

 the maximum flow is greater than the average, and the second 

 the same percentage, should the quantities involved be reduced 

 by the amount required to make the minimum zero. The 

 percentage will be affected largely by the amount of ground- 

 water running in the sewer and by the amount of water used 



15000 



15000 



3000 



for manufacturing purposes and discharged into the sewer. 

 No definite information on this point, however, is to be 

 found. 



Fig. 36 shows a sewage-pumping diagram for Atlantic City, 

 N. J., for the year 1892. The effect of the summer season 

 is plainly seen, as well as of the other holidays of the year.* 



Fig. 37 shows a diagram prepared from the results of a 

 gaging of the outfall sewer of Canton, O., in the spring of 1 893.1 

 The average daily amount (21,100 gallons) has also been 

 calculated and added, the maximum amount being 43 per 

 cent greater than the average. 



* Engineering News, Vol. XXIX, p. 123. 

 t/ta/., Vol. XXX, p. 61. 



