Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 170
SYSTEM B, TYPE ISystem of construction for store, office, school, hotel, courthouse and public buildings. This type constructed along much the same lines as archSystem A. The greater distance between beams results in a large saving in tonnage of steel and framing, with a consequent saving in time… … SYSTEM B, TYPE II Showing ceiling erected, clipped to I beams and supported at intervals, with galvanized wires hung from arch. When ceilings are referred to, it is generally intended that same shall be made up of ^ to i channel iron, spaced from 12 to 18 on centres, to which is laced Clinton V…
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