PTI/ASBI publish document intended to simplify bonded PT approval process

The Post-Tensioning Institute (PTI) Bonded Tendon Committee M-50 and American Segmental Bridge Institute (ASBI) joint task group collaborated on the new PTI/ASBI M50. 3-12, Guide Specification for Grouted Post-Tensioning, that specifies materials, installation, stressing and corrosion protection levels for grouted post-tensioning systems.

“The goal is to have the specification adopted by most State Departments of Transportation (DOTs),” explained PTI Technical Director, Miroslav Vejvoda, “which will simplify the approval process for the systems used in different areas of the country while allowing for consideration of local environmental conditions.” Qualification requirements for field personnel are also outlined in the specification to emphasize that the knowledge and experience of all involved in the construction process contribute to the long-term durability of the structure.