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

PTI 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

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Table of Contents
1.0—Introduction

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
12.1—General
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
14.1—General
14.2—Pourbacks
14.3—Elastomeric coating system

15.0—Repairs of holes and access openings
15.1—Openings

16.0—References

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