The Post-Tensioning Institute (PTI) a nonprofit organization for the advancement of post-tensioned, prestressed concrete design and construction, has announced the recipients of the 2013 PTI Project Awards to be honored May 6 at the PTI Awards Dinner in Scottsdale, Ariz., during the 2013 PTI Convention.
The awards jury, comprised of industry representatives, evaluated award submittals based on creativity, innovation, ingenuity, cost effectiveness, functionality, constructability and aesthetics. Fifteen exemplary post-tensioning projects were selected to receive awards in the following categories: Project of the Year; Buildings; Bridges; Parking Structures; Repair, Rehabilitation, and Strengthening; Industrial/Special Applications; and Slab-on-Ground.
The 2013 PTI Awards Reception and Dinner will take place on the evening of Monday, May 6, 2013. The reception will begin at 6:00 p.m. and the dinner and awards program will follow at 7:00 p.m.
The 2013 PTI Convention will be held May 5-7 at the Hilton Scottsdale Resort and Villas. The convention offers eight technical sessions, over 25 committee meetings, an industry trade show, the 2013 PTI Awards Dinner and several networking events. Additionally, PTI the "Design of Buildings with Post Tensioning" seminar and "Design of Post-Tensioned Slab-on-Ground with the New PTI Standard DC10.5-12" seminar following the convention on Wednesday, May 8. Reduced convention registration rates are available through April 12. Visit www.post-tensioning.org to learn more.
Project of the Year: Wacker Drive Viaduct Reconstruction
Submitted by: Alfred Benesch & Company; T.Y. Lin International
PT Supplied by: DYWIDAG-Systems International USA, Inc.; VSL
The project was entered in the bridge category and is a remarkable example of urban reconstruction. Wacker Drive’s reopening in December of 2012 was the first time in which both the lower and upper levels have been open fully to the public since 2010. Post-tensioning was the single most critical element to accomplishing the project’s main objective, affording exceptional flexibility in the design of every major infrastructure component. The project team was able to accommodate heavy loads, unbalanced spans and geometric anomalies by adjusting the horizontal layout and vertical drape of the strands, which is not feasible using other systems of construction.
Award of Excellence: The Vidalta Bridge
Submitted by: MEXPRESA
PT Supplied by: MEXPRESA
The Vidalta Bridge is a concrete-steel composite structure that was conceived to maximize the use of post-tensioning techniques. Its 161 m steel main span is supported by means of parallel strand cable stays, while its 78 m compensation back assembly is made of 50 MPa concrete, post-tensioned with multistrand cables. The Vidalta Bridge is a visually striking structure that maximized the use of PT in multiple structural elements and resulted in a very efficient use of materials.
Award of Merit: I-280 Veterans' Glass City Skyway
Submitted by: Figg Bridge Engineers, Inc.
PT Supplied by: DYWIDAG-Systems International, Inc.
Spanning the Maumee River in Toledo, OH, the I-280 Veterans’ Glass City Skyway incorporates innovative structural and aesthetic features, including a unique pylon design and stay cradle technology that was groundbreaking at the time of its construction. The single plane stays, in combination with the cradle system and precast delta frames post-tensioned into place allow for larger stay spacing and reduce the number of stays, providing more openness at the deck level and more pleasing aesthetics.