Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 198
OVER-SwI=»»OWT fp^^^pl Fic. I. TYPE F. UNIT GIRDER FR.AME, USUAL WIDTH(Patented) … ADVANTAGESOF REINFORCEDCONCRETECONSTRUCTION. ported as a Unit. 5, Erected as a Unit. 6, Act as a Unit. 7, Are carefullydesigned for each span. 8, Each member is of the necessary size. 9, It is of the propershape. 10, Tension and shear members are scientifically spaced. 11, All parts aresecurely…
Building materials
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