Chicago : Engineering and Contracting Pub. Co. · leaf 153
hird case the accumulation of moreaccurate and detailed data is permissible inpreliminary drainage surveys as the properbasis for intelligent designing. In the prose-cution of the survey certain fundamentalfacts must be determined; (1) the total areaof the watershed land delivering overflow… … Fig. 11—View of Wood Stave Pipe Line. diltBnce apart of laterals must be determinedand executed during the prosecution of thefield work. Even •closely to approximate thedesign of economic tile systems under suchconditions the engineer must be mentally ca- boundary Hne is of prime importance. If…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
