In situ load testing of parking garage reinforced concrete slabs: Comparison between 24 h and cyclic load testing

Paolo Casadei, Renato Parretti, Antonio Nanni, Tom Heinze

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This paper reports on the results obtained on the applicability of the diagnostic cyclic load test method in comparison with the existing 24 h test procedure adopted in ACI-318. A parking garage, owned by St. Louis County, St. Louis, Missouri, scheduled for demolition during the summer of 2002 was used as a research test bed before demolition. This structure, a two-story steel and reinforced concrete (RC) frame with one-way RC slabs built in 1970's, was ideal, in terms of size and construction system, for performing comparative field experimentation on load testing. Investigation and validity of acceptance criteria of existing and proposed testing methods were performed. Two identical RC slabs were tested, according to both the standard procedure (ACI-318-02) and the proposed diagnostic load testing. In both instances, the applied total test load was such that the slab did not pass the load test. This allowed characterizing the critical test parameters that govern acceptability and draw conclusions on their values. After load testing, both slabs were loaded until partial collapse was reached. This allowed making observations on the margin of safety with respect to collapse, a determination that is not generally possible in a proof test. The analysis of the experimental data provides professionals with evidence on the validity of in situ assessment for the adequacy of structural members.

Original languageEnglish
Pages (from-to)40-48
Number of pages9
JournalPractice Periodical on Structural Design and Construction
Volume10
Issue number1
DOIs
StatePublished - Feb 1 2005
Externally publishedYes

Fingerprint

Load testing
Cyclic loads
Concrete slabs
Reinforced concrete
Demolition
Structural members
Steel
Testing
In Situ
Garage

Keywords

  • Assessment
  • Concrete
  • Cyclic loads
  • In situ tests
  • Load tests
  • Parking facilities
  • Reinforced
  • Slabs

ASJC Scopus subject areas

  • Architecture

Cite this

In situ load testing of parking garage reinforced concrete slabs : Comparison between 24 h and cyclic load testing. / Casadei, Paolo; Parretti, Renato; Nanni, Antonio; Heinze, Tom.

In: Practice Periodical on Structural Design and Construction, Vol. 10, No. 1, 01.02.2005, p. 40-48.

Research output: Contribution to journalArticle

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