Description

This manual is used in conjunction with PTI’s Level 1 Field Fundamentals training program and provides guidance for field personnel involved in inspection, installation, stressing, and finishing of unbonded single-strand tendons and barrier cables. The latest edition has been updated to include an expanded inspection checklist, information on slab-on-ground installation, and a glossary of post-tensioning terms presented in both English and Spanish.

Glossary of post-tensioning terms presented in both English and Spanish

96 pages; 8½ x 11 in. (soft cover)

Published 2003

Table of Contents

TABLE OF CONTENTS

INSTRUCTION MANUAL FOR TRAINING AND CERTIFICATION OF FIELD PERSONNEL FOR UNBONDED POST-TENSIONING

1.0 INTRODUCTION

1.1 Purpose

1.2 Responsibilities

1.3 Definitions

2.0 THEORY OF POST-TENSIONING

2.1 Background of Prestressed Concrete and Post-Tensioning

2.2 Theory

2.3 Prestressing to Achieve Load Balancing

2.4 Partial or Full Prestressing

2.5 Continuous Members

2.6 Cantilevers

2.7 Ground Supported Foundations for Residential & Light Commercial Construction

3.0 FABRICATION

3.1 Fabrication of Tendons

4.0 DOCUMENT CONTROL

4.1 General

4.2 Installation Drawings

4.3 Shipping Lists

4.4 Material Certifications

4.5 Jack Calibrations

4.6 Stressing Records

5.0 DELIVERY, ACCEPTANCE, HANDLING, AND STORAGE

5.1 Delivery and Acceptance

5.2 Handling and Storage

6.0 INSTALLATION

6.1 General

6.2 Coordination of all Related Functions

6.3 General Installation Procedures

6.4 Installation Procedures for One-Way Slabs and Two-Way Flat Plates

6.5 Installation Procedures for Beam and Slab

6.6 Installation Procedures for Slabs-On-Ground

6.7 Field Installation of Fixed Ends

6.8 Inspection Checklist Prior to Installation and Placing of Concrete

6.9 Examples of Typical Installation Drawings

7.0 CONCRETE PLACEMENT

7.1 General Procedures

8.0 ANCHORAGES

8.1 General

8.2 Anchorage

8.3 Wedges

8.4 Stressing

8.5 Safety Considerations

9.0 TENDON STRESSING

9.1 General

9.2 Preparation for Stressing

9.3 Stressing the Tendons

9.4 Stressing Slab-On-Ground Tendons

9.5 Safety Procedures

9.6 Don’ts of Stressing

9.7 Inspection Before, During, and After Stressing Tendons

10.0 ELONGATION

10.1 General

10.2 Preparation

10.3 Measurement

10.4 Recording

11.0 TENDON FINISHING

11.1 Cutting of Tendon Tails

11.2 Grouting of Stressing Pockets

12.0 ENCAPSULATED SYSTEMS

12.1 General

12.2 Purpose and Scope

12.3 Fabrication of Encapsulated Tendons

12.4 Unloading of Encapsulated Tendons

12.5 Job Site Handling of Encapsulated Tendons

12.6 Installation of Encapsulated Systems

12.7 Finishing of Encapsulated Systems

13.0 BARRIER CABLES

13.1 General

13.2 Installation of Cables Through Columns

13.3 Installation of Cables at the Edge of Columns

13.4 Special Stressing Considerations

14.0 JOB SITE TROUBLESHOOTING

14.1 “Hazardous” Statement

14.2 Preventing the Most Frequent Problem

14.3 Strand Slippage and/or Jack “Hang Up”

14.4 Honeycomb in Concrete

14.5 Blowouts

14.6 Strand Breakage (one or more wires)

14.7 Tendons Too Short to be Stressed Using Normal Stressing Procedures

14.8 Splicing Tendons

14.9 Cracked Wedges

14.10 “Lift-Off” Procedures

14.11 Troubleshooting Monostrand Equipment

15.0 APPENDIX

15.1 Example - Material Certification

15.2 Example - Jack Calibration Chart

15.3 Example - Stressing Record Form

15.4 Example - Inspection Checklist

15.5 Example - PTI Plant Certification Tag

15.6 Repair of Damaged Sheathing

15.7 Spanish Translation of Definitions

ADDENDA AND ERRATA INFO

Any applicable addenda or errata are included with individual documents at the time of purchase. For a listing of and access to all product addenda and errata, visit the Addenda and Errata page. Errata page.

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