Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 160
Section Through Typical Arch … 1 Spans Allowable Between I Beams Depth of Arch, Weight, Pounds- Inches per Square Foot Arch Set Fiat, Set with Slight Cam- Feet and Inches ber, Feet and Inches 6 24 to 26 4-0 4-6 7 26 to 28 4-6 5-6 8 37 to 32 5-0 6-0 9 29 to 36 5-6 7-0 10 33 to 38 6-6 7-6 12 37 to 44 7-0 8-6 Perspective of Typical…
Building materials
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