The ENR article listed on the SEAINT server (available at WWW.ENR.COM
<http://WWW.ENR.COM> ) during the last couple of days lists a plausible
explanation relating to high chloride content of grout filling the hole
where the harp anchors had been during precasting of the girders.
IMHO the chlorides could have been a source for a localized galvanic cell to
greatly speed the corrosion. According the story, corrosion was limited to
the harped points where the strands were all in contact with one another.
I hope I'm wrong, but I don't think a good, accurate explanation of the
cause based on sound forensic investigation will ever come out. Something
about liability an such.... It's unfortunate that our society is so
Bill Cain, S.E.
From: Chanel1096(--nospam--at)aol.com [SMTP:Chanel1096(--nospam--at)aol.com]
Sent: Friday, May 26, 2000 6:48 AM
Subject: Re: NASCAR Pedestrian Bridge Collapse
This morning on the news they were talking about high Calcium
in the precast. It was just a blurb so I do not know about the
of the info.
-Bill King, EIT