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RE: Post tensioned precast construction

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You are on the right track.  This is a common method of post tension
construction especially in box segmental bridges where the connections are
generally made with Dwidag bars.  I would contact the Post Tension
Institute, Florida DOT and maybe Figg Engineering Group of Tallahassee,

Harold Sprague
The Neenan Company

-----Original Message-----
From: T. Eric Gillham PE [mailto:gk2(--nospam--at)]
Sent: Monday, March 08, 1999 12:08 AM
To: seaoc list
Subject: Post tensioned precast construction

I'm looking for references regarding precast concrete sections which are
connected using post tensioning.  I remember seeing this method in segmental
bridge construction.

We are designing a chapel which has a fairly large barrel vaulted roof.  To
eliminate formwork and shoring considerations, the contractor (on board
already) wants to precast sections of the roof and set them in place.  The
structure is about 50 feet long, and post tensioning the sections together
seems the logical method of getting the sections to work together.

Specifically, I am interested in how the joints themselves are treated to
bring about continuity of the overall structure.

Any help would be appreciated.

T. Eric Gillham PE
GK2 Inc.
PO Box 3207  Agana, Guam  96932
Email - gk2(--nospam--at)
Ph:  (671) 477-9224
Fax: (671) 477-3456