Established in 1976, the Post-Tensioning Institute (PTI) is recognized
as the world-wide authority on post-tensioning. PTI is dedicated to
expanding post-tensioning applications through marketing, education,
research, teamwork, and code development while advancing the quality,
safety, efficiency, profitability, and use of post-tensioning systems.
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. In addition, PTI has more than 500 professional
engineers, architects and contractors.
One of PTIís principal functions is to provide technical guidance on
the design, construction, maintenance and repair/rehabilitation of
post-tensioned concrete structures. PTI has published many
state-of-the-art consensus documents such as specifications, manuals
and technical guides covering most aspects of post-tensioning. In
addition, PTI publishes newsletters, Technical Notes, Frequently Asked
Questions, and Technical Updates which give an in-depth discussion
and/or analysis of issues pertinent to designers and other users in the
One of the goals of the Institute is to ensure that specifiers and
purchasers of post-tensioning materials receive products and services
which meet a recognized standard of quality. PTI has established
certification programs both for manufacturing plants and for field
personnel. Current programs include:
Producing Unbonded Tendons
Concrete (PC) Strand
1 Unbonded PT
Ė Field Installation
1&2 Unbonded PT Inspector
1&2 Unbonded PT Ironworker
Installer Ė Stressor
1&2 Bonded PT Field Specialist
These certification programs are
specified in many standard
codes and specifications, including the International Building Code,
American Concrete Instituteís Specifications for Structural Concrete
(301) and Specification
for Unbonded Single-Strand Tendon Materials (423.7).
PTI sponsors technical sessions at the annual Convention and education
seminars for design and construction professionals. PTI's Education
Committee has developed prototype college curriculums that can be used
to teach post-tensioning technology to engineers and architects.
PTI has 15 technical committees, including: Bonded Tendon; Grouting;
Bridges; Cable-Stayed Bridges; Unbonded Tendon; Building Design,
Repair, Rehabilitation and Strengthening; Slab-on-Ground;
Sustainability; Building Information Modeling (BIM), Rock &
Soil Anchors; Special Topics; Education; and Professional Member. The
Technical Advisory Board reviews and oversees all technical activities
of the Institute.
PTI also has 7 certification committees, including: Bonded PT Field
Personnel; Unbonded PT Field Personnel; Repair, Rehabilitation and
Strengthening Field Personnel; Slab-on-Ground Geotechnical Engineers;
Unbonded Tendon Plant; and PC Strand Plant . The Certification Advisory
Board reviews and oversees all certification activities of PTI.
PTI committees are open to all members and are instrumental in
providing guidance to producers and users of post-tensioning including
design practitioners, specifiers, inspectors and others; and in
advancing industry practices.
PTI sponsors research to improve industry practices and to advance the
state-of-art. Although historically a small part of PTIís programs,
research is a growing and increasingly significant function. For
example, PTIís sponsored research on slab-on-ground foundations lead to
a new design procedure that is now the standard across the country.
PTI is committed to increasing the use of post-tensioning in a variety
of construction and repair applications. PTIís Marketing Committee has
developed a plan to increase usage in existing construction markets and
to develop new markets such as post-tensioned pavements and bridge
A free exchange of idea on matters of mutual
interest to the members is necessary for the success of all meetings.
Indeed, such an exchange of views is essential to the successful
operation of every trade association. However, certain areas of
communication between competitors or between manufacturers and their
suppliers and customers must be avoided, as posing potential antitrust
PTI is committed to ensuring that its members comply with all
applicable antitrust laws and regulations. To this end, PTI has adopted
a Policy Statement on
Compliance with Antitrust Laws
that sets forth guidance for members in conjunction with all activities
within the scope of, and related to, the official functions of PTI.
to view the latest Antitrust Policy Statement.