Chicago : Engineering and Contracting Pub. Co. · leaf 470
up near the lock,increte was then mixed and placed in formsas to make a concrete base for each port>e. These bases were all filled to the sameRation. Forms about 3 ft. square, made ofn. lumber, were placed on the bases and When the car was finished, it was found to beso top heavy that it was… … 1—General View of Belt Conveyor for Transporting Concrete From Mixer to Lock 5, New York Barge Canal. e port pipes placed on top of the forms andought to line and grade after which therms were filled with concrete up to the bot-m of the port pipes. These port pipes weighiput 2,800 lbs. each and…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
