Title: When Bad Things Happen to Good [Buildings]

Author(s): Dylan Freytag, Keith Kesner, Randall W. Poston, and Kenneth Bondy

Publication: Symposium Paper

Volume: 291

Issue:

Appears on pages(s): 1-14

Keywords: Concrete, corrosion, pitting, post-tensioning, reinforcing steel, strand corrosion

DOI: 10.14359/51685621

Date: 3/29/2013

Abstract:
The title of this paper borrows from the 1981 book by Harold Kushner entitled “When Bad Things Happen to Good People”. In his book, Kushner attempts to explain why a universe created by a deity who is of a good and loving nature still holds so much pain and suffering for good people. In the context of this paper, the title is meant to be an epigraph that suggests that although a building may be meeting its intended structural purpose, bad things, at least as they are perceived, can happen during design, construction and service of the building that bring its safety into question. One of the main circumstances that can bring into question the integrity of an unbonded post-tensioned building is corrosion of the strands and anchorage components. This paper will highlight the unnecessary demise of a modern high-rise post-tensioned structure due to corrosion, and contrast that outcome to several existing unbonded post-tensioned buildings that experienced corrosion and were successfully repaired and continue to function.