International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 604
nches. To prevent longitudinal movement, stringers must beeither notched down one inch on the caps or drift-boltedto them. All packing-bolts should be long enough toreceive a cas/ zvas/wr underboth head and nut. Thedifficulty of removing drift-bolts when making repairshas already been mentioned.By… … 1190 RAILROAD STRUCTURES. by spikes. By notching down the ties 1 inch on the stringers(see /;, Fig. 592), the spacing of the stringers is maintained,and the ties held rigidly in place. 1757. Size of Stringers.—The size of the stringerpieces in section will depend upon the length of the spanand the…
Railroad engineering
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