International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 441
nt in the sap of the trees. Theties should be hewn to uniform thickness and piled in squarepiles about 4^ feet in height, as shown in Fig. 488, so as toadmit of the free circulation of the air and to hasten theseasoning process. 1597. Specifications for and Inspection ofCross-Ties.—Specifications… … TRACK WORK. 1031 standard tie is 8 feet G inches in length, 7 inches in thick-ness, and shows at least 7 inches of face. In the Northern,Middle, and Western States, log ties, i. e., ties cut fromentire trees and showing two rounded sides, are principallyused. In the Southern, Atlantic, and Gulf…
Railroad engineering
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