The Earthquake Engineering Online Archive

Evaluation and application of concrete tilt-up assessment methodologies

Graf, Timothy J.; Malley, James O.

PEER-2004/03, Pacific Earthquake Engineering Research Center, University of California, Berkeley, 2004, 81 pages (400/P33/2004-03)

This report covers Task 1 of the Pacific Earthquake Engineering Research (PEER) Center Task 509, Evaluation and Application of Concrete Tilt-up Assessment Methodologies. The objective of Task 1 of Lifelines 509 is to summarize the research findings and results of previous PEER research projects on concrete tilt-up buildings and to assess the report findings on their impact upon current design codes and guidelines. The research projects are (1) Seismic performance of tilt-up buildings by John F. Hall; (2) Building vulnerability studies: modeling and evaluation of tilt-up and steel reinforced concrete buildings by John W. Wallace, Jonathan P. Stewart, and Andrew S. Whittaker; (3) Stiffness of timber diaphragms and strength of timber connections by Gerard C. Pardoen, Daniel Del Carlo and Robert P. Kazanjy; and (4) Seismic performance of an instrumented tilt-up building by James C. Anderson and Vitelmo V. Bertero. Each project report covers primarily the performance of existing older pre-1997 tilt-up construction. This report is organized into six main sections. The first two sections offer a brief overview of tilt-ups, the scope of this report, and short synopses of the reports in this task. The third section consists of comparison of the data to guidelines (FEMA 356) and established codes (2000 IBC; 1997 UBC). This section comprises conclusions drawn by Degenkolb Engineers and is not the work of the original authors. The fourth section lists a series of questions for the authors concerning their reports. The fifth section has suggestions for future PEER research presented by the authors and added to by Degenkolb and other practicing engineers. The final section consists of suggestions for practicing engineers on how to incorporate the ideas presented in these four reports. Additional, more complete summaries of all the reports are also included in the appendices. The data from the reports were evaluated to test the validity of design procedures and to identify what changes, if any, could be made to current design methodologies.

Available online: http://peer.berkeley.edu/publications/peer_reports/reports_2004/0403.pdf