Chicago : Engineering and Contracting Pub. Co. · leaf 102
eywere allowed to cure for 60 days, before be-ing used in the bay. The average output ofthis yard was 100 piles a day, and of the 9808piles manufactured, 12 only were injured inmanufacture, or handling, sufficient to causetheir rejection. The concrete piles were driven from a turn-table driver,… … to barges, provision being made at the end ofthe trestle for a gravel hopper, cement chute,coal dump. etc. The floating equipment consists of two gaso-line tugs, pile driver barges, two concrete mix- the engine on the derrick car. The crane wasequipped with two triplex Yale & Towne chainhoists…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
