Architectural iron and steel, and its application in the construction of buildings ... specifications of ironwork ... tables selected expressly for this work ... by Wm. H. Birkmire (1905)
Birkmire, Wm. H. (William Harvey), 1860-1924 · New York, J. Wiley · leaf 172
ernatelyin twos and threes; hence, to keep the strength uniformthroughout, those links which occur in twos should be thickerthan those where there are three together. Thus we mighthave alternately two links \ of an inch thick and three links\ inch thick. The requisire size of the pin is determined… … Where the three links occur, it may be assumed that theload is equally distributed throughout, or that there is onethird of the load on each of the three links; then it is evidentthat in the case of the outside link the pin requires to besheared in one place only for rupture to ensue; therefore…
Building, Iron and steel
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