Fort St. Vrain PCRV Bottom Head Construction

by Hughes M.G. Nerses, Principal Structure Engineer; Ebasco Services Inc., New York, N.Y.,
Clyde B. Tatum, (M.ASCE), Construction Engr.; Ebasco Services Inc., New York, N.Y.,

Serial Information: Journal of the Construction Division, 1975, Vol. 101, Issue 2, Pg. 391-402

Document Type: Journal Paper


A construction technique, which required precise design of temporary handling equipment and support structures, is described. The technique involved yard assembly and move-in of the Prestressed Concrete Reactor Vessel bottom head assembly. Design of all move-in and temporary support equipment was in accordance with stringent deflection and final position tolerances. The parallel yard assembly of the bottom head and construction of the PCRV support ring in the building structure resulted in a critical path schedule savings of approximately 7 months. All temporary handling equipment and support structures performed as designed, and all as-built dimensions were within specification tolerances.

Subject Headings: Construction management | Construction equipment | Support structures | Temporary structures | Prestressing | Prestressed concrete | Displacement (mechanics) | Critical path method

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