Sidney Freedman
Director Architectural Precast Concrete
Services, Precast/Prestressed Concrete Institute, Chicago, Illinois
Architectural precast concrete wall panels that act as
loadbearing elements in a building are both a structurally efficient and
economical means of transferring floor and roof loads through the structure and
into the foundation. In many cases, this integration can also simplify
construction and reduce costs. This article presents them any benefits that can
be derived from using loadbearing architectural precast concrete walls in
buildings. Discussed herein are the various shapes and sizes of wall panels,
major design considerations, and when loadbearing or shear wall units should be
the first design choice. The role of connections, shear walls, and the use of
precast concrete as forms for cast-in-place concrete is explained. In general,
the design methods and techniques presented in this article apply to buildings
in both seismic and non-seismic areas. The latter part of this article shows
how these design principles can be applied in practice in a variety of
buildings. These examples illustrate the use of window wall panels, spandrels,
and solid or sandwich wall panels as the loadbearing wall members. When all the
advantages of using arc hitectural precast concrete as loadbearing walls are
added up, it makes good sense to use this structural form in building
applications.
References
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September-October 1997, pp. 44-63.
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PCI JOURNAL, V. 42, No. 1, January-February 1997, pp. 30 - 41.
Aswad, G. Gus, Djazmati, Basel and
Aswad, Alex, Comparison of Shear Wall Deformations and Forces Using Two
Approaches, PCI JOURNAL, V. 44, No. 1, January-February 1999, pp. 34-46.
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IL, 1999.
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and Cronin, John L., Design-Construction of the Oklahoma City IRS Building, PCI
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for Precast and Prestressed Concrete, MNL 123-88, Precast/Prestressed Concrete Institute, Chicago, IL, 1988, 270 pp., and PCI Committee on Connection Details, Addendum to Design and Typical Details of Connections for Precast and Prestressed Concrete, PCI JOURNAL, V. 40, No. 5,
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Wall Panels, State-of-the-Art of Precast/Prestressed Sandwich Wall Panels, PCI
JOURNAL, V. 42, No. 2, and 3, March-April 1997 and May-June 1997, pp. 92-134
and pp. 32-49.
Du Bois, Cornelius R. (Kin), Kipp,
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Tower, PCI JOURNAL, V. 35, No. 6, November-December 1990, pp. 26-33.
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Beams, Specially Funded R&D Program, Research Project No. 5,
Precast/Prestressed Concrete Institute, Chicago, IL, 1986.
ACI Committee 318, Building Code
Requirements for Structural Concrete (ACI 318-99), American Concrete Institute,
Farmington Hills, MI, 1999.
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