M50.3-12: Guide Specification for Grouted Post-Tensioning

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This publication includes all aspects of materials, installation, stressing, and corrosion protection levels for grouted post-tensioning systems. Requirements for field personnel are also stated as the knowledge of all involved contributes to building durable structures. The aim is to have this new Specification adopted by most State Departments of Transportation (DOT), simplifying the approval process for the systems used in different areas of the country while allowing for local environmental conditions. Also designers will find this book useful in preparing the Project Specifications.

26 pages; 8½ x 11 in. (soft cover)

Published June 2012


Table of Contents

Table of Contents


2.0—Definitions and abbreviations

3.0—Post-tensioning system (PTS) tendon protection levels (PL)

4.0—Material specifications and performance requirements

5.0—Installation drawings and stressing calculations

6.0—Quality assurance and quality control (QA/QC)

7.0—Personnel qualifications

8.0—Shipping and storage of materials

9.0—Bearing plates and duct installation

10.0—Placing concrete

11.0—Prestressing steel installation

12.0—Stressing operations


12.2—Maximum stress at jacking

12.3—Stressing sequences

12.4—Stressing jacks and gauges

12.5—Calibration of jacks and gauges

12.6—Elongations and agreement with forces

12.7—Friction testing

12.8—Wire failures in strand tendons

12.9—Cutting of post-tensioning steel

12.10—Capping of tendons

12.11—Record of stressing operations

13.0—Grouting operations

13.1—Duct air test

14.0—Protection of post-tensioning anchorages



14.3—Elastomeric coating system

15.0—Repairs of holes and access openings




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