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The PTI Convention each spring contains a series of technical sessions including research updates, state-of-the-art use of post-tensioning, and fascinating case studies.
Initial applications for Technical Session Presentations are due October 1 the year prior to the desired PTI Convention. Presentations and Sessions range from 25 minutes to 2 hours.
Forty Years of PT Construction, Asit Baxi
TENDON – New Educational Free Software for Post-Tensioned Structures, Fabio Albino de Souza
Post-Tensioning – Codes vs. Practices; A Need for Trained Engineering Professionals, Sivakumar Munuswamy
Corrosion Mitigation Using Impregnation on Bonded PT, Garth Falls
Structural Strengthening Using External PT, Michelle Haughey
Innovative Evaluation of Paper-Wrapped Post-Tensioning, Liao Haixue
Considerations in Designing Post-Tensioning Repairs, Tracy Naso
Project Update on the Hebron Gravity-Based Structure, Drew Micklus
Innovated Post-Tensioning Solutions for State-of-the-Art Projects, Yosbany Ballate
Slab-on-Ground Conversion to Suspended Foundation, Don Illingworth
Anchorage Zone Reinforcement: How Important and Whose Responsibility is it?, Edgar Zuniga
Advancing Anchorage Performance Technology, Thomas Mathews
Shear Nonsense: A Critique of the ACI Code Shear Design Procedure for Post-Tensioned Beams, Dirk Bondy
Recentering Post-Tensioned Concrete Walls for Enhanced Seismic Resilience, Leo Panlan
Key Aspects of 2-D and 3-D Finite Element Solutions for Serviceability and Strength Requirements of Post-Tensioned Beams and Slabs, Spencer Lee
Post-Tensioned Concrete in U.S. Buildings, Ken Bondy
Gerald Desmond Replacement Bridge – Long Beach, CA, Ken Black
Project Updates on the St. Croix and Lesner Segmental Bridge Projects, Ed Underhill
April 25, 2016 – Effect of Exposure to Humidity and Temperature on the Fresh Properties of Cementitious Post-Tensioning Grout, Trey Hamilton
Sulfate Limits for Corrosion of Steel Strand in Deficient Grout, Krishna Vigneshwaran Konda Krishnamurthy
Current State of the Art in the Design and Construction of the Complex Interchange Projects Using Spliced Precast Girders, Gregg Reese
Experiences and Reflections on EIT Post-Tensioning, Tommaso Ciccone
FHWA DTFH611D00048 – Task 5009; Development of FHWA Guidance for Monitorable Replaceable and Assessable PT Tendons, Trey Hamilton, Antonio Ledesma, & Ian Hubbard
April 25, 2016 – 32 Years of PTI’s Development of Recommendations for Cable-Stayed Bridges, David Goodyear
PTI Certification Programs – A Reflection, Larry Krauser
PTI Technical Committees: Reflecting on 40 Years as We Plan for the Future, Don Kline
The High Cost of (a Lack of) Education, Theodore Neff
Celebrating 40 Years of Advancing the PT Industry, Bob Sward
Evaluation Guidelines for the Performance of SOG Foundations, Lowell Brumley
The New Construction and Maintenance Manual and the New Specification for PT Slab-on-Ground Foundations, Dan Buck
Geotechnical Design of Post-Tensioned Slabs-on-Ground, John Bryant
Structural Design of Post-Tensioned Slabs-on-Ground, Don Illingworth
BIM – From Contractors Perspective, Asit Baxi & Nandish Pethani
Building Information Modeling: A Design Engineer’s Perspective, Frank Malits
Surf Club – A new Condominium/Hotel in Miami Beach, Yosbany Ballate
OneEleven Tower: Unbonded Post-Tensioned Transfer Floor, Neel Khosa
Viktoria: Unique Post-Tensioning Design Creates Column-Free Interior in Residential High-Rise, Cary Kopczynski
Pour Strips Elimination at Upper Levels in PT Parking Structures, Rashid Ahmed
Simple Innovative Solutions to Complex Challenges in Unbonded Post-Tensioning, Larry Krauser
Seismic Performance of Post-Tensioned Concrete Special Moment Frames, Thomas Kang
Optimizing PT Designs Using a Genetic Algorithm, Jonathan Hirsch
Post-Tensioned Floors – Design for Temperature, Florian Aalami
Post-Tensioned Transfer Slab in Vertically Irregular Building, Jang-Keun Yoon & Thomas Kang
The Use of NDE and Analytical Tools in Post-Tensioning Repairs, Gabriel Jimenez
Strengthening of Pont de I’Europe with PT Products, Werner Brand
Mockup Injections of Alternative Flexible Fillers for Multi-Strand PT Bridge Tendons, Dr. Trey Hamilton & Byron Spangler
Shelf Life of Prepackaged Post-Tensioning Grouts, Marcelino Aguirre
Material and Corrosion Evaluation of Deficient PT Grout with Enhanced Sulfate Concentrations, Krishna Vigneshwaran & Kingsley Lau
Inclined Tube Test – Will it Really Help Improve Post-Tensioning Grouts?, Dr. Trey Hamilton & Byron Spangler
Design and Construction of New York City’s First Segmental Platform Structure – With a Record 240 ft. Simple Span, Andrea Travani
Field Application of Carbon Fiber Composite Cable Post-Tensioning System, Yoshiaki Yamamoto & Kenichi Ushijima
Environmentally Induced Degradation in Steel Used in Post-Tensioning, Shaun Elder
Where are the Stay Cables? An Investigation, Khaled Shawwaf
System Qualification of Grouted Post-Tensioning Systems, Larry Krauser
TAB Vision: PTI as the International Technical Leader for Post-Tensioning, Don Kline
The Association/Industry Partnership – Facing Future Challenges Together, Theodore Neff
PTI’s Future Direction, Bob Sward
Post-Tensioned Rock Anchors Used for Retrofitting Canadian Dams, 1999-2013, Jim Bruce
Load-Distributed Ground Anchors, Andy Baxter
Recommendations for Prestressed Rock and Soil Anchors - 5th Edition, Matt Niermann
Park Plaza Post-Tensioned Parking Structure Demolition, Austin, TX, Michael Lussier
Post-tensioning Design for the University of Arizona - Environmental and Natural Resources II Building, Asit Baxi
Building Information Modeling (BIM) Requirements for PT Projects - Today's Capabilities for a BIM-based Design, Florian Aalami
Design of Post-Tensioned Raft and Piled Raft Foundations in the Amazon Region, Fabio Albino de Souza
The PT Supplier's Expertise Contribution to a Successful Project, Russell Price
Why Do I Prefer PT as a Contractor, Bill Klorman
The Tallest Residential Building in Seattle Taking Advantage of PT, Cary Kopczynski
PT Wedge Manufacturing Process, Quality Control, and Tolerances, Kevin Walsh
Effects of Anchor Wedge Dimensional Parameters on Post-Tensioning Strand Performance, Kevin Walsh
Hybrid Precast Concrete Shear Walls for Seismic Regions, Yahya Kurama, PhD
Innovative Seismic Lateral Force-Resisting Systems, Stephen Pessiki, PhD
Dispelling the Myth and Unbonded Post-Tensioned Buildings - Is the Negative Stigma Deserved?, Lindsey Tourand and Chris Fulton
All Wrapped UP - Protection of Post-Tensioning Tendon Repairs, Tracy Naso and Jim Donnelly
The Importance of the Grout Pocket Integrity in Unbonded Post-Tensioned Structures, Gabriel Jiminez, PhD
Innovative Corrosion Mitigation Method for Post-Tensioned Structures, Garth Fallis
Virginia Experience with Post-Tensioned Tendon Grouts, Michael Sprinkel
Corrosion of Post-Tensioned Tendons in Deficient Grout Material,Krishna Vigneswaran Konda Krisnamurthy and Kingsley Lau, PhD
Unbonded Tendons with Alternative Post-Tensioning Filler Materials (handouts unavailable), Natassia Brenkus and H.R. (Trey) Hamilton
Effects of Age and Limestone Fillers on Post-Tensioning Grout Performance (handouts unavailable), H.R. (Trey) Hamilton and Byron Spangler
San Francisco - Oakland Bay Bridge: Post-Tensioned Solution for Retrofit of Broken Bolts, Mike Schwager
Force Monitoring of Prestressing Steel in Structures, Shahid Islam, PhD
Miami Science Museum, Bonded Post-Tensioning Gulf Stream Tank, Katherine Farley and Sharath Murthy
9th Avenue, West Manhattan Project, New York City - The Erection and Post-Tensioning of the Platform Deck, Tommaso Ciccone, Gilberto Dreas
Post-Tensioning System of the Precast Network Arches of the West 7th Street Bridge, Courtney Holle, Dean Van Landuyt, and Zuming Xia
The Role of Professional Members in PTI, Don Kline
Just Certification, Larry Krauser
Technically Sound Solutions Benefit All Involved, Cary Kopczynski
PTI Executive Director's PTI News - Theodore Neff, Executive Director PTI
Quality of Post-Tensioning Systems, Marc Khoury – PTI President
Adaptation of PTI Method for Slabs-on-Ground Foundation in Brazilian Condition, Fabio Albino de Souza
Design of Slabs-On-Ground – New Standard & Certifications, Ryne Stoker
Recent Developments of PT Research in Korea, Thomas Kang, Yongnam Kim, and JK Yoon
Challenges of Post-Tensioning Design in the International Market, Florian Aalami and Spencer R. Lee
Corner Connections in PT Flat Plate Buildings, Thomas Kang
Diversion of Prestress Effects in Strength Design of Post-Tensioned Structures, Jonathan Hirsch
Post-Tensioning Projects in the Middle East and Gulf Regions (Presentation not available), Ziad Nasser
Repairs to Parking Ramp Structures with Corroded Button-Head Systems (Presentation not available), Gabriel A. Jimenez
Replacement of Post-Tensioned Strands from Below-Grade Structures (Part 1, Part 2), Richard Mitchell
Strengthening of Large Storage Tank Foundation Walls in an Aggressive Environment by External Post-Tensioning, Dominique Deschamps
External Post-Tensioning Repair of a Parking Structure with Limited Access, Kyle Stanish and Daniel E. Moser
External PT Splices for Tank Modifications, Hume Ross
High –Capacity PT Rock Anchors – Implementation of a Quality Assurance Program, Julio Diamante
Infrastructure and Unbonded Post-Tensioning, Neel Khosa
External Post-Tensioning of Existing Steel Bridges, Clyde Ellis
Innovations in Bridge Superstructure Condition Assessment with Sonic and Radar Methods, Larry D. Olson and Patrick Miller
Corrosion Mitigation Options for Post-Tensioned Structures (Part 1, Part 2), Garth Fallis
Fracture Projection for Corroding Post-Tensioned Wire and Strand, William H. Hartt
Structural Health Monitoring and Testing for Wire Breaks and Corrosion in PT Tendons and Cabled Bridges, Terry Tamutus
Post-Tensioning Systems – Protection Level 2, Jacob Myer
Precast Post-Tensioned Pavement – PT Details, Michael Schwager
Construction of the Simcoe Street Tunnel, Toronto, Ontario, Canada, Roger Fren and Edward Li
Cast-in-Place Segmental Bridge Construction “Rising to Great Heights”, Robert Bennett and Timothy Barry
Segmental Cable-Stayed Construction in an Aggressive Environment, (presentation not available) Drew Micklus
Challenges in Constructing the Harbor Drive Pedestrian Bridge, San Diego, CA, USA, Khaled Shawwaf and Bryan Lampe
Significant Bridges in Mexico, Jose-Luis Quintana
State-of-the-Art Saddle Technology for Cable-Stayed Bridges, Drew Micklus
Developments in Repair and Retrofit of PT Structures, Garth Fallis
Government/Industry Partnership, Brian D. Merrill
Technical Initiatives in PT Buildings, Cary Kopczynski
Welcome – 2013 PTI Convention, Marc Khoury – PTI President
PTI Certification Programs - Past / Present / Future, Larry Krauser
Unbonded Tendon Stress Increases in Multi-Span Members, Marc Maquire, William Collins, Kedar Halbe, Carin Roberts-Wollmann
Design and Construction of Barrier Cable Systems, Carlos Banchik, Pete Scoppa
The PTI Method for Grade Slab Design - A Dissenting View and Alternative, Richard Martter
PTI's New Design Guide: A Resource for Preliminary and Final Building Designs, Don Kline, Carol Hayek
Two-Way Banded Tendon Layout, Jonathan Hirsch, Rashid Ahmed, Asit Baxi
Effects of Post-Tensioning in Design of Columns and Walls of Multi-Story Buildings, Florian Aalami
Live Ends at the Slab Edge - Good Construction Practices, Douglas Sarkkinen
Repair of Precast Pre-Tensioned Girders Using External Post-Tensioning, Miguel Forero, Asit Baxi
The Most Common Types of Post-Tensioned Repairs in Parking Structures, Gabriel Jimenez
New Guide for Evaluation and Repair: A Resource for Existing Structures, Florian Barth
Montgomery County Judicial Center, Phillip Antis, Tom Gillard
Post-Tensioned Buildings in Korea, Thomas Kang
Post-Tensioned Void Slab System, Jang Keun Yoon, Florian Aalami
Developments in Unbonded Plant Certification, Thomas Mathews
Value of Specifying Grouted Field Personnel Certification, Gregory Hunsicker
Importance of Unbonded Field Personnel Certification, Neel Khosa
Retrofit of the Post-Tensioned Precast Transition Pier Columns on the Sunshine Skyway Bridge, Antonio Ledesma
Segmental Bridge Construction Techniques, Robert Sward
Lake Champlain Bridge Cables - Design, Testing and Installation (presentation not available), Khaled Shawwaf
Significant Bridges in Mexico: The Vidalta Bridge, Jose Luuis Quintana
Current Practice of Assessing Strength and Durability of Grouted Tendons and Cable Stays, Randall Poston, Keith Kesner, Michael Ahern, Sharon Wood, and Jinying Zhu
Corrosion of Tendons in Florida due of Segregation of New Prepackaged Grout, High pH, Low Chloride, Pitting due to Sulfur Compound, Kingsley Lau
Corrosion Performance of Prestressing Strands in Contact with Two Different Grouts, Matthew O'Reilly
Recent Development in Corrosion-Resistant Prestressing Steels, Robert Moser, Daniel Schuetz, Lawrence Kahn, Kimberly Kurtis, and Preet Singh
PTI - Moving Forward, Theodore Neff - PTI Executive Director
Sustainability, what's in it for me? A World of Opportunity (presentation not available), Florian Barth
Promoting Post-Tensioning, Michael Russillo
Post-Tensioning from a Global Perspective, Marc Khoury
Welcome - 2012 PTI Convention, Larry Krauser - PTI President
GTK VOLFLO 1.5, Dean Read
ADAPT-Builder / Floor Pro, Florian Aalami
RAM Concept (presentation not available), Jonathan Hirsch
Design and Construction of a 300-Foot-Long Jointless Pavement, Pawan Gupta
Slab-on-Ground Combined Standard, Brian Juedes
Minnesota Twins Target Field, Neel Khosa
Design of Post-Tensioned Slabs for Vibrations, Floran Aalami
Structural Efficiency from a Sustainability Perspective, Carol Hayek, Saleem Kalil
Grout-Bonded versus Unbonded Post-Tensioning Tendon Behavior in Concrete, Thomas Kang
Your First PT Design? Let's Talk (presentation not available), Gregory Chacos
Ensuring Quality in PT Construction - A PT Company Perspective, Marc Khoury
Session #5: Panel Discussion - Ensuring Quality Construction
Session Introduction / Encapsulated PT Systems for Durability, Cary Kopczynski
PTData.net (Part 1, Part 2), Ken Bondy
Deflections of PT Slabs - What is Acceptable?, Douglas Sarkkinen
When Bad Things Happen to Good (Unbonded PT Buildings) (presentation unavailable), Dylan Freytag, Keith Kesner, Randy Poston
Assessment and Restoration of Post-Tensioned Waffle Slabs in Parking Ramp Structures, Gabriel Jimenez
Find Voids in Grouted Post-Tensioning Tendons Using Ultrasonic Low-Frequency Tomography, Garth Fallis
Replacement for the High-Temperature Grout Fluidity Test Using a Dynamic Shear Rheometer (presentation not available), Trey Hamilton
PTI Recommendations for Stay Cables, sixth edition, David Goodyear
The Marlins Stadium Roof Track Girders, Yosbany Ballate
Innovative Bridge Construction (presentation not available), Guido Schwager
ASBI Grouting Certification, William Cox
Sae Poong Bridge - New Directions in Cable Design (presentation not available), Khaled Shawwaf
PTI M-50 / ASBI Specification for Grouted Post-Tensioning, David Martin
Durability of Post-Tensioning: fib Bulletin 33 and FHWA Scan Tour Findings, Brett Pielstick
Tendon Failure Investigation and Drying in a Two-Way Unbonded Post-Tensioned Roof Slab (presentation unavailable), Andrea Shear, Matthew Lewis, James Donnelly
Susceptibility of Post-Tensioning Tendons to Corrosion (presentation not available), Keith Kesner, Randall Poston
BIM and Post-Tensioning (presentation not available), William Klorman
Impact of Sustainability (presentation not available), Florian Barth
New and Emerging Applications of Post-Tensioning, Theodore Neff - PTI Executive Director
Value of Partnering with PTI Members, Larry Krauser - PTI President
Design of Post-Tensioned Slabs-on-Ground on Stable Soils, Brian Juedes
Structural Alternative Design of Post-Tensioned Slabs-on-Ground, Brian Juedes
Design Rectangles for Post-Tensioned Slab-on-Ground Design, Don Illingworth
Geotechnical Alternative Design of Post-Tensioned Slabs-on-Ground, Ryne Stoker
Design of Post-Tensioned Industrial and Commercial Slabs-on-Ground, Robert Anderson
Strength Investigation of Concrete Floors with Special Reference to Post-Tensioning, Florian Aalami
Quantifying Corrosion and Options for Repair on Prestressed Concrete Structures, Siva Venugopalan, Clyde Ellis
Evaluation of Corrosion Damage in Unbonded Post-Tensioning Concrete Structures - Misunderstandings, Misinformation, and Moving Forward, Keith Kesner, Randall Poston
Ground-Penetrating Radar (GPR), Troy De Souza
Assessment and Restoration of Post-Tensioned Parking Ramp Structures (presentation not available, Gabriel Jimenez
Post-Tensioned Concrete Repairs in a Coastal Environment (presentation not available), John Duntemann, John Sfura
Structural Diaphragm of Post-Tensioned Parking Structures, Rashid Ahmed
Hybrid External Post-Tensioning Saves Chicago Garage, Don Kline
Vertical Post-Tensioning in Buildings, Carol Hayek
Assessment of Secondary Effects in PT Flat Plates, Amy Hufnagel, Thomas Kang
Building Better Outcomes with Post-Tensioned Concrete, Eric Messerly
Nonlinear and Code Analysies of Post-Tensioned Slab-Column Connections, Thomas Kang
Sustainability Advantage of Post-Tensioning in Buildings, Dennis Reilly
Monitoring Strains in a Post-Tensioned Parking Deck, Jim Richardson
William Bennett Bridge Project, Guy Cloutier
Behavior and Performance of Cast-in-Place Post-Tensioned Concrete Pavement in Texas (presentation not available), Moon Won
Hoover Dam Bypass Bridge: Temporary Stay Cables - Design / Testing, Installation, and Inspection, Mark Tumason
Foothills Parkway Bridge No. 2 Design-Build / Great Smokey Mountains National Park: Designing to Reduce Environmental Impact, Robert Sward, Gregory Hunsicker
St. Croix River Crossing - A Multi-Extradosed Concept (presentation not available), Vijay Chandra
Advancing the Use of Corrugated Plastic Duct in Tight-Radius PT Applications, Larry Krauser
Evaluation and Detection of Broken PT Tendons in Prestressed Concrete Structures, David Whitmore
PT Grouting - Where We Are After a Decade of Change, Andrea Schokker
Acoustic Emission Testing and SHM Field Installation of the Manhattan Bridge (presentation not available), Richard Gostautas
Monitoring Corrosion in Aging Suspension Bridge Cables, Raimondo Betti
Assuring PT Field Execution Quality through Field Personnel Certification, Miroslav Vejvoda
National Grouted Post-Tensioning Specification, Guido Schwager, Jeff Cavanaugh, Mike Schwager
Assuring Materials Quality through Plant Certification, Larry Krauser
Specifying Post-Tensioning, Theodore Neff
Codifying Post-Tensioning, Kenneth Bondy
Sustainability and Post-Tension Concrete: Opportunities and Obstacles, Carolyn Forsyth
Construction Sustainability of Post-Tensioned Bridges, Jeffery Volz, Andrea Schokker
Sustainability and Post-Tensioned Concrete: Gray is the New Green, Martin Maingot
Sustainability & Concrete, Florian Barth
Nondestructive Method for Locating Breaks in Post-Tensioned Cables, Garth Fallis
Tendon Blowouts and Eruptions, Causes and Repairs (presentation not available), Douglas Sarkkinen
Slab Strengthening Using Multi-strand Tendons - A Case Study, Scott Greenhaus
Repair of Older Post-Tension Systems (presentation not available, James Donnelly
Fatigue in Corroded Post-Tension, Jeffery Volz
Improved Durability through High-Performance Grouts, Mark Moore
Corrosion and Maintenance of Stay-Cables (presentation not available), Habib Tabatabai
Stay-Cable Replacement Procedures for the Hale Boggs (Luling) Bridge, Louisiana - A North American Cable-Stayed Bridge Repair Milestone, Chris Ligozio
Post-Tensioned Concrete Tanks - Designed to a Higher Standard, Anthony Galterio
Post-Tension CIP Pavement, Moon Won
Precast / Prestressed Pavement, Dave Merritt
Standardizing Precast, Post-Tensioned Bridge Decks, Brian Swartz
Electrically Isolated Tendons in Precast Segmental Bridges - A Case Study, John Crigler
Reconstruction of the I-35W Bridge, Tom DeHaven
Tolerances From the Designer's Perspective, James Cagley
Construction Tolerances, Bruce Suprenant
Use of BIM to Facilitate Post-Tensioned Concrete Construction (presentation not available), Bill Klorman
Certificaiton & Specification Developments, Thomas Mathews
Maturity Testing, Matt Pittman
Use of BIM in Post-Tension Design, Florian Aalami
Barrier Cable Design Considerations in Parking Strucutres, Ryan Fredrick, Rashid Ahmed
Lateral Load Analysis and Design of Post-Tensioned Slab-Column Connections, Thomas Kang
The Advantages of Post-Tensioned Design for Mixed Use Developments, Anish Taliti, Jeff Brink
Hybrid Moment Frames / Unbonded Post-Tension Shear Walls, Neil Hawkins
Post-Tensioned Structures in the Middle East (presentation not available), Hans Rudolf Ganz
Post-Tensioning in Mexico, Jose Luis Quintana
Post-Tensioning from the ACI's Perspective, Florian Barth
Post-Tensioning in Europe, Marcel Poser
Post-Tensioning from the Designer's Perspective, James Cagley
Keynote Address: PTI Past & Future, Ken Bondy
May 4-7, 2024Sheraton Phoenix Downtown Phoenix, Arizona, USA