Post-Tensioning Institute

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The Post-Tensioning Institute (PTI) is a not-for-profit trade association committed to advancing the quality, safety, efficiency, profitability, and use of post-tensioning systems. PTI's informative manuals and technical guides provide guidance on the design, construction, maintenance, and repair/rehabilitation of post-tensioned concrete structures. Additionally, PTI strives to ensure that specifiers and purchasers of post-tensioning materials receive products and services that meet a recognized standard of quality through its plant and field personnel certification programs. Members of the Institute include major post-tensioning companies, as well as more than 500 professional members, engineers, architects, and contractors from around the globe.


PTI was founded in 1976. Members of the Institute include major post-tensioning materials fabricators, manufacturers of prestressing materials and companies supplying materials, services and equipment used in post-tensioned construction. Additionally, members include professional engineers, architects and contractors.

Technical Committees[edit]

The Technical Advisory Board reviews and oversees all technical activities of the Institute, including education and certification.