Value of Specifying Grouted Field Personnel Certification. May 2012 PTI Convention - Nashville Gregory Hunsicker, P.E.

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1 Value of Specifying Grouted Field Personnel Certification May 2012 PTI Convention - Nashville Gregory Hunsicker, P.E.

2 Course Objective Quality of materials and workmanship are critical to the performance of grouted posttensioning. Individuals who complete the training will have a sound working knowledge of all aspects of installation and inspection of all grouted post-tensioning systems D. Van Landuyt, P.E., TXDOT

3 Course Objective PTI Certification Workshop: Level 1 & 2 Bonded PT Field Specialist 3-day workshop specifically aimed at field personnel involved in the installation, stressing, grouting, and inspection of bonded post-tensioning multi-strand and bar systems used in bridge and building construction. Baseline of Knowledge

4 Course Objective Benefits: Durability of PT construction Improved productivity Enhanced safety Risk reduction Improved profitability & competitiveness Code & specification compliance PTI/ASBI M50, PTI M55 Professional development Better value for the owner Consistency Focus on Preplanning QC and Record Keeping Best Practices Discussion

5 Attendees Field personnel Installers and Inspectors Owners Engineers Managers Large projects Experienced and new personnel Experience level differentiates Level 1 and 2 Consistency

6 Specifying the Certification M50 Specification Example Several DOT s and other Owners already specify requirements for certification 7.1 Supervision Post-Tensioning Operations Direct Supervisor of Post-Tensioning Operations shall be certified as PTI Level 2 Bonded PT Field Specialist Foreman of each installation and stressing crew shall be certified as PTI Level 2 Bonded PT Field Specialist Foreman of each grouting crew shall be certified as PTI Level 2 Bonded PT Field Specialist and ASBI Certified Grouting Technician At least 25% of each crew shall be certified in PTI Level 1 Bonded PT Field Installation

7 Day 1 Introduction to Post-Tensioning Post-Tensioning Systems & Components Materials and Properties Installation Tendon Stressing Day 2 Grouting Field Demos Day 3 Corrosion Protection Construction Documents Safety Troubleshooting Review Certification Exam

8 1. Introduction to Post-Tensioning Basic Principles of Post-tensioning Definitions Bonded vs. UnBonded Internal and External Tendons Applications of Post-tensioning

9 2. Post-tensioning Systems and Components Terminology and components Proper handling, storage, and protection of components Establishing and identifying job site responsibilities Traceability

10 3. Material Properties and Testing Stressing Forces Strand Production and Properties Elongations and Tolerances Sampling Testing Friction Tests, MOE, etc Grout Testing

11 4. Installation Tools and equipment unique to the installation of post-tensioning systems Field placement tolerances Duct assembly & installation requirements Grout Vent Locations Anchorage installation processes Methods and techniques for installing prestressing steel Importance of protecting the prestressing steel prior to grouting

12 5. Stressing Proper use of stressing equipment and related tools to properly prepare, stress, and finish bar and strand tendons Understand jacking force versus hydraulic gauge pressure Proper marking and measuring procedures Allowable times between stressing and grouting Lift-offs

13 6. Grouting Overall grouting operation and how to use equipment Written Grout Plan Hot Weather / Cold Weather Procedures for checking for blockages Proper mixing procedures related to grout types Repairs

14 7. Corrosion Protection Identify levels of corrosion protection Identify the characteristics of grout that contribute to PT durability Identify the possible ways to protect post-tensioning anchorages Identify ways to provide temporary corrosion protection of tendons during construction

15 8. Contract Documents Identify all of the pertinent construction documents utilized in post-tensioned construction Extract needed information from these documents and apply it to the construction of the project Identify types of documents Calibrations Charts QC Records

16 9. Safety Understand hazards associated with different operations Safe material handling and storage Avoiding Issues

17 10. Troubleshooting Identifying and repairing common issues Avoiding issues by utilizing best practices

18 Student Manual Best Practices Current Specifications

19 Exercises Filling out Stressing Records Strand Properties Grouting Procedures Reading Plans and Specs Jobsite Safety Analysis (JSA)

20 Field Demos Install, Stressing, Grouting Compare different types of equipment and materials Grout testing Discuss common issues / tips and tricks

21 Exam 60 question Multiple Choice Exam Closed Book Instructors Professionals within the posttensioning industry Variety of Backgrounds CT40 PTI Committee

22 Certifications Level 2 Bonded PT Field Specialist Prerequisite: None Exam minimum score: 80% Work experience: 1500 hours in PT 500 placing stressing grouting Level 1 Bonded PT Field Installation Prerequisite: None Exam minimum score: 70% Work experience: None Valid for 4 years Recertification by online exam

23 Upcoming Courses Level 1&2 Bonded PT Field Specialist May 23-25, Gainesville, FL July 18-20, Chicago, IL September 12-14, San Jose, Calif. October 10-12, Austin, TX Special Requests All of the five nationally recognized PTI Training and Certification programs can be presented at your location by proven industry experts. Train and certify your employees or other group and eliminate travel-related expenses. We bring the experts to you.

24 Value of Specifying Certification Consistent and Current Training to Latest Specifications Best Practices Focus on Durability of PT construction Owners know what to expect Contact Gregory Hunsicker or Miroslav Vejvoda for more information