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FHWA Resource Center

STRUCTURES TEAM

SUBJECT: Prestressed Concrete Committee for
Economic Fabrication (PCEF)

To: PCEF Members Reply Refer to: Resource Center at Baltimore
From: High Performance Structural Materials Specialist


Attached for your information is a copy of the attendance list and minutes for the subject meeting, held on February 13, 2003 at the Holiday Inn in Charleston, West Virginia. Also attached are copies of the updated full committee and subcommittee membership lists. Individuals wishing to have their name removed from any of the lists are asked to notify our office as soon as possible.

We wish to thank Mr. John Martin of the Virginia Department of Transportation for his outstanding job of taking notes and completing the minutes in a very timely manner.

Hard copies of materials will be mailed to appropriate individuals with a ** designation who do not have an electronic mailing address. Individuals receiving the materials either by hard copy or electronically are asked to distribute them in a timely manner to others in their office on the mailing list.

Our appreciation is also extended to the Subcommittee chairmen, to the presenters, and to all attendees for their active participation in the meeting. Continued status reports will be requested from each chairman at the next meeting.

The attached minutes are supplemented as follows:

Self-Consolidating Concrete (SCC):

Per questions from Mr. Ramsburg’s presentation, we are requesting the following:

1) Results of permeability testing of SCC

2) Results of any studies on development length of prestressing strand when used in SCC versus HPC or normal strength concrete for prestressed girders.

Status Report from the States on Use of the PCEF Bulb-T:

We are very encouraged by the rise in popularity of these shapes, as reported at the last meeting. Increased use by the New York and Virginia DOTs, and the recent correspondence between PennDOT and the state’s precast industry, are indications of the dedication of Committee members towards regional quality, economy and uniformity. Recent contacts made by a Maryland design consultant led to responses by local precasters that the PCEF girder would be a more efficient and economical alternative to the AASHTO girder.

Production/Construction Issues:

Of interest to the PCEF members would be that the PCI “Manual for the Repair of Precast, Prestressed Concrete Bridge Beams and Deck Panels” has recently been distributed for final review and balloting.

Design Parameters Issues:

Although not solely for HPC, the following questions were raised regarding State DOT practices for designing prestressed concrete girders cast into integral abutments:

1) Is partial fixity assumed at the end of the girder to more accurately simulate stresses due to the integral abutment?

2) What software is being used to design the girders for this condition?

Members are requested to send any responses to our office, by phone, fax or email.

Also under this topic, we request that the industry members of the Committee assess their positions on a priority order in which to tackle the issues presented, as well as any additional issues that need to be addressed. We would appreciate an update from one of their spokesmen at the next PCEF meeting.

Standardization Issues:

1) A useful reference for cross frames is the “Designers’ Guide to Cross Frame Diaphragms,” which can be found at the following website:

www.steel.org/infrastructure/bridges/crossframe.htm

2) A useful reference for continuity is being completed under NCHRP Project 12-53, “Connection Between Simple-Span Precast Concrete Girders Made Continuous,” by Dr. Richard Miller of the University of Cincinnati. The project is either complete, or scheduled to be completed soon.


We have set the date for the next meeting for Wednesday, September 3, 2003, 9 AM, at the Maryland State Highway Administration’s District 7 Office (Training Room 2), 5111 Buckeystown Pike, Buckeystown, Maryland. This is located off Exit 31 for Route 85 (Buckeystown Pike), near Frederick, and south of I-70. Any questions about office location may be directed to Susan, at 301-624-8201. The Hampton Inn is located on the same road, and within walking distance of the SHA District Office. Reservations may be made by calling 301-698-2500, for a single room rate of $75 plus tax.

Once again, we thank the membership and their management for the support of this Committee’s activities. Please feel free to submit any agenda topics to our office by July 15, 2003.

Original signed by,

Attachments Louis N. Triandafilou, P.E.

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