Image from page 469 of "A history of real estate, building and architecture in New York City during the last quarter of a century" (1898)
Publisher: New York : Record and guide
Contributing Library: Columbia University Libraries
Digitizing Sponsor: The Durst Organization
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brick. Beams of cast-iron weresometimes used with brick arches between to form floors, and insome cases riveted plate beams were used for the same pur])ose. In 1834 Ieter Coopers Trenton, X. J.. [Mills rolled the first solidwrought iron beam ever used for the floors of anv building in thiscountry. These i^eams were of a shape very similar to what is nowcommonly known as deck beams, having a bottom flange, aweb and a bulb at the top, much resembling a railroad rail,onlv deeper in the web. These beams were to be used in theCooper Union Building in Xew York, but they were divertedby request of the U. S. Government and used in that year inthe U. S. Assav office building on Wall Street. The next buildingin which such beams with brick arches between were used was thatfor Harper & Brothers, publishers, a fireproof building erected thatsame year. It was the following year, 1855, that deck beams wereused in the Cooper Union building, the very first building for whichthey were manufactured.
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BllLDlXG AXD ARCHITECTURE IN NEW YORK. 463 A little mure than five vears later, ju>t ])riiir ti> i860, the first Ibeams were rolled in this conntry. L Trenton Alills and thePhoenix Imn Io. of Pennsylvania beginning their mamifac- ture at abmu the same time. The double-flanged or P beams met with great favor from tlie -^tart. I.laborate tests of their^trengtli were made 1)\ an army ottieer. lai)tairi Anderson, whoafterward became famous as the defender of Fort Sumter.As the demand for P beams increa-ed rolling mills indifferent sections of the conntry look up their manu-facture. The first size rolled was se\-en-inch, and gradually all sizes,from four inclies up to t\\ ent\ -four inclies, were ])Ut on the market.The facility an<l prom])tness with which rolled l,cams can now be got,their admirable sha|)e, by which the greatest strength is obtainedwith the least weight of metal: their re.isontil)le jirice: the j.referenceof architects and engineers to use rolled ins
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