International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 591
Fig. .wo Fig. 560. Fig. 561. which is amply sufficient A hole is first bored through thecap into the pile head to receive the drift bolt, which shouldbe somewhat larger than the hole, so that in driving, everycavity in the hole may be completely filled (see Fig. 559). RAILROAD STRUCTURES. 1177…
Railroad engineering
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