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C30.3-06: Level 2 Unbonded PT Inspector

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Description

This manual is used in conjunction with PTI’s Level 2 Unbonded Post-Tensioning Inspector program. The course builds on the Level 1 – Field Fundamentals course and is designed to teach an inspector about the means and methods used to install post-tensioning systems. The manual provides guidance for inspecting installation, stressing and finishing of single strand, and unbonded post-tensioning tendons. It also covers troubleshooting and inspection of repairs and barrier cable systems.

151 pages; 8.5 x 11 in. (soft cover)

Published 2006

 

Table of Contents

TABLE OF CONTENTS

Chapter 1 - Introduction and Review of Fundamentals

1.1 OBJECTIVES

1.2 SECTION GOALS

1.3 RESPONSIBILITIES

1.4 DEFINITIONS

1.5 COMPONENTS

1.6 DELIVERY OF POST-TENSIONING MATERIALS

1.7 UNLOADING, HANDLING, AND STORAGE

1.8 REVIEW OF THE PRINCIPALS OF PRESTRESSED CONCRETE

1.9 POST-TENSIONING OF STRUCTURAL (ELEVATED) SLABS

1.10 POST-TENSIONING OF GROUND SUPPORTED SLABS

1.11 ADVANTAGES OF PRESTRESSED CONCRETE

Chapter 2 - Properties of Prestressing Steel

2.1 OBJECTIVES

2.2 SECTION GOALS

2.3 TERMINOLOGY

2.4 ULTIMATE / YIELD STRENGTH

2.5 DETERMINING STRESSING FORCES

2.6 TENDON ELONGATION

Chapter 3 - Reading Construction Documents

3.1 OBJECTIVES

3.2 SECTION GOALS

3.3 DOCUMENT CONTROL

3.4 PROJECT SPECIFICATIONS

3.5 STRUCTURAL DRAWINGS

3.6 APPROVED POST-TENSIONING INSTALLATION DRAWINGS

3.7 REBAR PLACING DRAWINGS

3.8 POST-TENSIONED SLAB-ON-GROUND PLANS

3.9 TENDON FABRICATION SHEETS AND OTHER SHIPPING DOCUMENTS

3.10 MATERIAL CERTIFICATIONS

3.11 STRESSING EQUIPMENT CALIBRATIONS

3.12 STRESSING RECORDS

Chapter 4 - Inspection of the Installation

4.1 OBJECTIVES

4.2 SECTION GOALS

4.3 PRINCIPLES OF FLAT SLAB AND FLAT PLATE POST-TENSIONED FLOOR SYSTEMS

4.4 PRINCIPLES OF BEAM AND SLAB POST-TENSIONED FLOOR SYSTEMS

4.5 PRINCIPLES OF BEAM AND JOIST POST-TENSIONED FLOOR SYSTEMS

4.6 PRINCIPALS OF SLAB-ON-GROUND POST-TENSIONED FLOOR SYSTEMS

4.7 GENERAL INSPECTION PROCEDURES FOR POST-TENSIONED STRUCTURES

4.8 INSPECTION PROCEDURES FOR FLAT SLAB AND FLAT PLATE POST-TENSIONED FLOOR SYSTEMS

4.9 INSPECTION PROCEDURES FOR BEAM AND SLAB

4.10 INSTALLATION PROCEDURES FOR BEAM AND JOIST

4.11 INSPECTION PROCEDURES FOR SLAB-ON-GROUND

4.12 FIELD INSTALLATION OF FIXED END ANCHORAGES

4.13 ENCAPSULATED (AGGRESSIVE ENVIRONMENT) SYSTEMS

4.14 INSPECTION CHECKLIST PRIOR TO INSTALLATION AND PLACING OF CONCRETE

Chapter 5 - Inspection of Tendon Stressing Operations

5.1 OBJECTIVES

5.2 SECTION GOALS

5.3 PRINCIPALS OF THE HYDRAULIC JACK

5.4 PREPARATION FOR STRESSING

5.5 APPLYING THE ELONGATION REFERENCE MARK

5.6 STRESSING THE TENDONS

5.7 RECORDING TENDON ELONGATIONS

Chapter 6 - Inspection of Tendon Finishing Operations

6.1 OBJECTIVES

6.2 SECTION GOALS

6.3 GENERAL

6.4 CUTTING OF TENDON TAILS

6.5 SPECIAL CONSIDERATIONS FOR TENDONS USED IN SLAB-ON-GROUND CONSTRUCTION

6.6 SPECIAL CONSIDERATIONS FOR ENCAPSULATED (AGGRESSIVE ENVIRONMENT) SYSTEMS

6.7 GROUTING OF THE POCKET FORMER RECESS

Chapter 7 - Troubleshooting and Inspection of Repairs

7.1 OBJECTIVES

7.2 SECTION GOALS

7.3 HAZARDOUS STATEMENT

7.4 JOBSITE TROUBLESHOOTING AND RESPONSIBILITIES

7.5 STRAND SLIPPAGE AND/OR JACK “HANG-UP”

7.6 HONEYCOMB IN CONCRETE

7.7 BLOWOUTS

7.8 STRAND BREAKAGE (ONE OR MORE WIRES)

7.9 TENDONS TOO SHORT

7.10 TENDONS TAILS TOO SHORT TO BE STRESSED USING NORMAL STRESSING PROCEDURE AND/OR EQUIPMENT

7.11 CRACKED WEDGES

7.12 SEATING LOSS IN EXCESS OF 3/8 IN. (10MM)

7.13 JACK SPINS SUDDENLY WHEN IT IS RETRACTING

7.14 LIFT-OFF PROCEDURE

Chapter 8 - Inspection of Barrier Cable Systems

8.1 OBJECTIVES

8.2 SECTION GOALS

8.3 APPLICATION OF BARRIER CABLE SYSTEMS

8.4 CONTROL OF DEFLECTION

8.5 STRAND SPACING AND HEIGHT

8.6 BACKSTRESSING

8.7 CORROSION PROTECTION

Appendix A - Terms and Definitions

Appendix B - Repair of Damaged Sheathing

Appendix C - Example – Inspection Checklist

Appendix D - Example – Stressing Record

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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