Chicago : Engineering and Contracting Pub. Co. · leaf 498
056 cu. yds. by cross-section measurements. Based on the month-ly reports of materials placed in the dam,the cost for the year averaged $0.3813 percubic yard for dry fill and $0.2289 per cubicyard for wet fill. Material for the dry fill was obtained fromthe Culebra Cut, from the lock site,… … Fig. 2—View of Upper Guard Gates, Gatun Locks, Under Construction. substitution of creosoted for concrete pilingis under consideration. Stone and Sand.—Crushed stone for theconcrete of the locks and spillway was ob-tained from the Porto Bello quarry. Thesingle face which had been developed…
Buildings
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