Title: Concrete Capacity Design (CCD) Approach for Fastening to Concrete

Author(s): Werner Fuchs, Rolf Eligehausen, and John E. Breen

Publication: Structural Journal

Volume: 92

Issue: 1

Appears on pages(s): 73-94

Keywords: anchors (fasteners); concretes; failure; fasteners; studs; loads (forces); shear tests; structural design; tension tests; Design

DOI: 10.14359/1533

Date: 1/1/1995

Abstract:
A user-friendly, highly transparent model for the design of post-installed steel anchors or cast-in-place headed studs or bolts, termed the concrete capacity design (CCD) approach, is presented. This approach is compared to the well-known provisions of ACI 349-85. The use of both methods to predict the concrete failure load of fastenings in uncracked concrete under monotonic loading for important applications is compared. Variables included single anchors away from and close to the edge, anchor groups, tension loading, and shear loading. A data bank including approximately 1200 European and American tests was evaluated. The comparison shows that the CCD method can accurately predict the concrete failure load of fastenings for the full range of investigated applications. On the other hand, depending on the application in question, the predictions of ACI 349 are sometimes unconservative and sometimes conservative. The CCD method is more user-friendly for design. Based on this, the CCD method is recommended as the basis for the design of fastenings.