This specification is intended to apply to buildings, bridges, storage structures, and other structures using grouted posttensioning tendons, except as follows: stay cables and rock anchors that are already covered by other PTI documents. This specification provides requirements and guidance for furnishing complete post-tensioning systems and all required accessories, including but not limited to anchorages, local zone reinforcement, ducts, pipes, strands, and bars from a single supplier, as required.

Provisions further address submittal samples, drawings, calculations, procedures, reports, manuals, and certifications. Both temporary and permanent post-tensioning shall comply with this specification. Guidance is provided for the minimum requirements for the Tendon Protection Levels identified in the Contract Documents.

The PTI M55.1 specification includes requirements for proper grout material selection, testing, and grouting procedures.