Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 159
part Portland cementparts sandajr aa requred Fig. 2. Section of Ferroinclave Roof as used on Span of 4 10C. to C. of Purlins. For longer Spans increase the thickness of concreteabove the Ferroinclave from \ to the following: Span 6; concrete ontop 4. Span 7; concrete on top \\. Span 8; concrete on…
Building materials
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Il terzo [-qvinto] libro ... (1551)](https://img.insideoutlibrary.com/img/200/ia-ilterzoqvintolib00serl-207-330.webp)
