Chicago : Engineering and Contracting Pub. Co. · leaf 31
the surface of the bed. At one timein Feb., 1910, the temperature fell to 10° be-low zero and about 75 nozzles on this bedfroze shut. The need of bringing the mediato the top of these riser pipes to preventfreezing is thereby shown to be necessary. The final sedimentation basins were in con-stant…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
