International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 650
d for |-in. bolt. RAILROAD STRUCTURES. 1235 STANDARD FRAMED TRESTLE, CLEVELAIVD AND CANTON RAILROAD. 1791. A style of trestle which is aptly called a conx-pound timber trestle, and growing much in favor, isillustrated in Fig.624. The character-istic feature of thistype is that the mainmembers, such… … facility and safety with which repairs can be made, Asthe parts are bolted together, a defective piece may be 1236 RAILROAD STRUCTURES. readily replaced, and that without endangering or delayingtraffic. In general, a better quality of timber may be hadin small dimensions than in large ones, and at…
Railroad engineering
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