Kidder, Frank E. (Frank Eugene), 1859-1905, Nolan, Thomas, 1857-1926 · New York : W.T. Comstock · leaf 168
al in the long run ; they are also easily dented. Copper is the most durable of all materials and should be usedwhen the rest of the construction will warrant the expense. Galvanized iron, however, makes a very durable conductor, whenkept painted, and if made of suitable thickness is not easily… … Fig. 144.—Steams Patent Cypress Conductor and Malleable Wall Irons. 16-ounce cold rolled copper. With both metals the joints should beboth soldered and riveted. Metal conductors may be round, octa-gon or rectangular in section, but should contain some provision forexpansion in case of freezing…
Building
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-465-270.webp)
