Chicago : Engineering and Contracting Pub. Co. · leaf 405
lace a part of the invert con-crete before setting any steel, but this is onlydone in emergency, as it completely stops anddisorganizes the concrete work. Vitrified Brick.—The vitrified brick arelaid as in street paving, the courses runningparallel to the sewer. A half-inch layer orcushion of dry…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
