Chicago : Engineering and Contracting Pub. Co. · leaf 586
rial: 68% barrels 1 ortland cement 61.88 lb yas. stone 1140 lbs. twisted steel 29.64 Total cost of material $15.!.02 Total cost of floor $356.33 The area of floor laid was 4,217 sq. ft. andthe cost per square foot was $0,084. EARTH AND ROCK SECTION Designs of Dipper Trips for SteamShovels. At… … Fig. 1—Door of Dipper of 95-Ton ShovelShowing Compound Latch Trip. in these devices which began soon after thefirst shovels were put at work in the CulebraCut. In the accompanying sketch, Fig. 3, the dip-per of the shovel is shown in dumping posi-tion, the emptying process being accomplishedby…
Buildings
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