Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 171
^ ^~ … O Cto C SYSTEM C, TYPE IIFor hotels, office buildings, schools, hospitals, depots, banks, etc. Concrete arch reinforcing same in general outline as Type I, sleepers filled betweenwith concrete fill and wood floor used instead of granolithic finish. Flat ceiling suspended from fabric imbedded in the…
Building materials
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