SEWER DESIGN 



TABLE VI* 



SHOWING THE COMPUTED PERCENTAGES OF THE HEAVIEST 

 RAINFALL DISCHARGED FROM FIVE DIFFERENT CITY DIS- 

 TRICTS BY THE RESPECTIVE OUTLET SEWERS DURING 

 THE PERIOD OF MAXIMUM FLOW, ALSO THE AVERAGE 

 VALUES OF SUCH PERCENTAGES. 



Arranged with reference to duration of heaviest rainfall. 



* From Kuichling's Report, p. 165. t Preceded and followed by lighter rain. 



\ Sudden shower followed by lighter rain. Heavy shower preceded by lighter rain. 

 || Intensity roughly estimated. 



Tf Sewer here ran under head; percentage is computed from maximum discharge 

 without head previous to surcharge. 



** Figures obviously too high or low. and rejected in deriving averages. 



