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Home > Publications > 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.
Title: Variable Depth Floor Slabs for Parking Garage
Author(s): E. Vernon Konkel and Nicholas V. Tsiouvaras
Publication: Journal Proceedings
Appears on pages(s): 919-928
Keywords: concrete construction;concrete slabs;durablity;hyperbolic paraboloids;parking garages;permeablity;post-tensioning;prestressed concrete;prestressing steel; structural analysis;structural design.
Abstract:Describes the analysis, design, and construction of the variable depth floor slabs of the parking garage for the Chase Stone Center -Colorado Springs, Colo. Column centers are 30 ft each way and columns are structural steel. A typical slab is cast in place 24 in. deep at the columns and 7 in. at the center lines of the square panels. The undersurface of the slab is a hyperbolic paraboloid with sections parallel to the center lines as straight lines in both directions which results in a "hypar slab." This system is easy to form and results in several other economies that make the system desirable for structures of this type. The elastic frame method was used for both the applied loads and for the effect of the prestressing forces. Calculations are described in detail.
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