Recommendations for the Degree of Prestressing in Prestressed Concrete Structures

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Title: Recommendations for the Degree of Prestressing in Prestressed Concrete Structures

Author(s): Fritz Leonhardt

Publication: Special Publication

Volume: 59

Issue:

Appears on pages(s): 269-286

Keywords: crack width and spacing; deformation; partial prestressing; performance; prestressed concrete; safety factor; serviceability; structural design; tensile stress

Date: 1/1/1979

Abstract:
Experience and some damages in the last 30 years teach that full prestressing is often not the best solution for prestressed concrete structures. Better service performance can be obtained with partial prestressing. Serviceability criteria are proposed to meet performance requirements. Cracks with limited crack width are harmless, but crack width control must be improved and this can be done by partial prestressing. Rules are given for a reasonable choice of the degree of prestressing.