Chicago : Engineering and Contracting Pub. Co. · leaf 656
Fig. 5—Wire Reinforcement for Concrete Dome. Fig. 6—Spacing and Lap of Reinforcing Bars. trench was in a sand carrying a great deal ofwater, the vacuum pumps on open suction caredfor only a short length of ditch, and progresswas still very slow. An Emerson vacuumpump with well points was next tried…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-15-4.webp)
