Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 183
able for turning out this work with speed and accuracy. The centers for the jack arches or floor beams were built in three sections bolted together and set on wedges; this per- mitted adjustment to line and grade, also ease in removal ; and the reinforcement was built in place before the side forms… … Fig. 20. Floor Reinforcement and Balustrade. arched rings, hinges of cast steel and cast iron were set at the skew back, thus making them virtually two hinged arches. These hinges (see Fig. 16) weighed approximately 5 tons each; the skew back was of cast iron; the arch seats of cast steel, working…
Engineering
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