Chicago : Engineering and Contracting Pub. Co. · leaf 698
Fig. 1—Standard Sewer Manhole, Memphis,Tenn. ig. A—Standard Manhole for Sewers Under3-ft. Diameter, Indianapolis, Ind., andInvert Block. … by the engineer of proper materials and in aneat and workmanlike manner. The walls shallbe 8 ins. thick. Standard manholes will be considered as equalto a circular manhole with inside diameter of4 ft. at bottom, brought up vertically to within3 ft. of the top, from which point they shall be
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
