Four Million Square Feet of Thin-Shell Rib Panels for Roof Framing

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Four Million Square Feet of Thin-Shell Rib Panels for Roof Framing

Author(s): Charles C. Zollman

Publication: Journal Proceedings

Volume: 49

Issue: 5

Appears on pages(s): 809-823

Keywords: no keywords

Date: 5/1/1953

Abstract:
A detailed description of the required plant and the job planning for producing large numbers of ident,ical precast concrete roof elements. These elements were used in 17 warehouses each 200 x 1000 ft. The initial contract required the production of 144 panels per day with a later additional contract calling for 132 panels per day. Successive casting yard operations were release of side forms on previously cast panels; stripping and storing panels, cleaning molds; placing preassembled reinforcing cages; placing approximately 95 cu yd of concrete; vibrating, screeding, vacuum processing, and finishing of the concrete; curing; removal of spilled concrete; and washing and cleaning of vacuum mats and other equipment. So effective was the prior planning and the setting up and operation of the casting yard that the only important interruptions to production were when the construction of cast-in-place rigid frames could not keep up to the supply of panels.