44 



SEWER DESIGN 



connection for which it was made. "It is," he says, " merely 

 an attempt to utilize the available data as to the local rainfall 



jnow ja S9UOUI ui nojuiDy jo 



in a rational manner, and to remove the subject of urban 

 sewerage from the realm of vague conjecture." 



Fig. 7 shows a diagram from the paper* by C. W. Sherman 



* Trans. Am. Soc. C. E., Vol. LIV, p. 176. 



