ABCD Pittsburgh Chapter

Calendar of Events and Meetings

Thursday, March 17th, 2005

Sivaraman (Siva) Venugopalan

Managing Engineer, Philadelphia , PA Office
Exponent Failure Analysis Associates  

Speaking on  

Failure Analysis of Post-Tensioned Tendons in Bridge Structures

Corrosion and corrosion related tendon failures have been disclosed on several segmental box girder bridges in Florida .  One such structure was the Mid-Bay Bridge near Destin , Florida where as many as 11 tendons were replaced.  Additionally, many other tendons exhibited cracking of the polyethylene duct.  The visual inspection of this bridge revealed 1) corrosion of tendons and individual wires that ranged from minimal to severe, 2) presence of broken wires, and 3) cracking of the polyethylene duct.  Based upon the various field and laboratory evaluations, a mechanism of tendon corrosion was proposed.  Susceptibility of a particular tendon to deteriorate by the proposed mechanism varies depending upon the extent to which deleterious conditions are present.

Date:                            Thursday, March 17, 2005

Time:                            Social at 5:00 PM; Dinner at 6:00 PM; Program at 7:00 PM

Place:                           Four Points Sheraton Pittsburgh North

                                    910 Sheraton Drive , Mars PA

Cost:                            $25.00 for Members of ABCD and/or ASCE

            $30.00 for Non-members of ABCD and/or ASCE

                                    $10.00 for ASCE Student Members

Contact:                       Sjaan Korvink at (412) 395-8888 or e-mail korvink@abcdpittsburgh.org

RSVP:                          By Friday, March 11, 2005