FARMINGTON HILLS, MI – May 2, 2025 – The Post-Tensioning Institute (PTI) has released its acclaimed FAQ No. 17, focusing on historic dimensional changes in the anchorage, wedge, and strand for the 0.5-inch (12.7 mm) diameter Prestressed Concrete (PC) single strand unbonded system. This document, developed by the PTI DC-80 Repair, Rehabilitation & Strengthening Committee, in collaboration with the CRT-60 Unbonded PT-Repair, Rehabilitation and Strengthening Personnel Certification Ad Hoc Committee, serves as a critical resource for professionals seeking to refine their understanding of this specialized area of construction.
FAQ No. 17 provides a detailed exploration of changes in:
Anchorage Dimensions
Wedge Specifications
Strand Characteristics
Each section addresses how these components of unbonded PT systems have evolved historically, offering clarification to facilitate accurate repair, rehabilitation, and strengthening practices.
This FAQ serves as a valuable guide for engineers, contractors, and certification seekers within the prestressed concrete industry. By addressing key technical questions, this document aims to:
Enhance understanding of component compatibility over time.
Support professionals in implementing precise repair and rehabilitation techniques.
Contribute to the overall improvement of structural integrity and safety.
PTI FAQ No. 17 is available for free on the FAQ and Technical Notes section of the PTI website. Its accessibility underscores PTI’s commitment to delivering high-quality, educational resources for the industry.
For professionals involved in post-tensioning system repair or enhancement, FAQ No. 17 is an essential tool. Be sure to download it today to advance your knowledge and stay at the forefront of industry practices.
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Media Contact
Paulina Barbone
PTI Marketing Manager
(248) 848-3809
Paulina.Barbone@post-tensioning.org
About the Post-Tensioning Institute
The Post-Tensioning Institute is the world’s leading authority on post-tensioning and is dedicated to advancing its applications through marketing, education, research and code development. For more information, visit www.post-tensioning.org.
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