Chicago : Engineering and Contracting Pub. Co. · leaf 300
of which the elevations of themain trunk sewers were established. A factorof safety had to be carried to allow for theproperty, when finally put on the market,being of a cheaper class than expected, inwhich case less filling would be done and thewhole system of sewers would have to be putat a lower… … Four Way Manhole sewers, the latter being usedonly for a shortdistance. •■ The most careful study has been made tosecure an economical balance between the flatgrade near the surface, with consequent largesewer, and the steep grade with smaller sizeand deeper excavation. This is a case thatis…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
