Title: Partially Collapsed Precast Concrete Structure in New Orleans Saved by Offering a Practical Engineering Solution

Author(s): Subhash Kulkarni

Publication: Concrete International

Volume: 22

Issue: 10

Appears on pages(s): 45-50

Keywords:

DOI:

Date: 10/1/2000

Abstract:
The partial collapse of an aging precast-concrete warehouse meant the structure may have to be demolished completely. Several core samples were taken from roof beams and columns, and petrography tests and compressive strengths were conducted. An extensive survey was performed to find the column plumbness, deflection of beams in place, and record the condition of existing columns. One of the roof girders was removed from the site and tested for strength and deflection in accordance with ACI 318-99. The crack propagation was recorded through field measurements and by photography and video taping. The resulting conclusion was that the girder carried the load through certain loading but failed by deflection criteria. The cracks were also visible to indicate failure of the girder. The recommendations were made to salvage the structure by reinforcing girder and columns through concrete or steel.