Chicago : Engineering and Contracting Pub. Co. · leaf 294
t. or stones are driven down well into it. Athin layer of 1% in. broken stone is thenspread and covered by dry sifted stone-coalashes mixed with Rosendale or hydraulic cem-ent. A solution of slaked lime and water isapplied next, after which a layer of brokenstone is applied and rolled. The dry… … Fig. 7—Road with Stone Trackway (KeachPatent.) constructed according to a patent ( No.124,022) granted in 1872 to Charles G. VanTagen. This pavement consisted mainly of ahardened and perfectly dry substructure ofgravel, broken stone, or other suitable mate-rial ; of cobble or other stones laid upon…
Buildings
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