Table of Contents
1.0 — INTRODUCTION
1.1 — Scope
1.2 — Alternative post-tensioning scheme
1.3 — Referenced standards and specifications
2.0 — DEFINITIONS AND ABBREVIATIONS
2.1 — Definitions
2.2 – Abbreviations
3.0 — POST-TENSIONING SYSTEM (PTS) TENDON PROTECTION LEVELS (PL)
3.1 — Protection Level 1A (PL-1A)
3.2 — Protection Level 1B (PL-1B)
3.3 — Protection Level 2 (PL-2)
3.4 — Protection Level 3 (PL-3)
4.0 — MATERIAL AND PERFORMANCE REQUIREMENTS
4.1 — General
4.2 — Material standards
4.2.1 — Strand
4.2.2 — Bar
4.2.3 – Special prestressing materials
4.3 — Component standards
4.3.1 — General
4.3.2 — Post-tensioning anchorages
4.3.3 — Permanent grout caps
4.3.4 — Bar couplers
4.3.5 — Duct
4.3.5.1 — Corrugated metal duct
4.3.5.2 — Corrugated plastic duct
4.3.5.3 — Smooth HDPE duct
4.3.6 — Duct connections and fittings
4.3.7 — Heat-shrink sleeves
4.3.8 — Precast segmental duct couplers
4.3.9 — External smooth HDPE duct connections
4.3.10 — Rigid ducts and steel pipes
4.3.11 — Connection tolerance between pipe and duct
4.3.12 — Inlets, outlets, valves, and plugs
4.4 — System approval testing
4.4.1 — Post-tensioning anchorages
4.4.2 — Grouting component assembly pressure test (PL-1B, PL-2, and PL-3 only) and system safety proof test (PL-1A only)
4.4.3 — Duct testing
4.4.4 — Corrugated plastic duct
4.4.5 — System pressure tests
4.4.5.1 — Corrugated plastic duct connections
4.4.5.2 — Precast segmental duct couplers
4.4.5.3 — Internal duct systems
4.4.5.4 — External duct systems
5.0 — INSTALLATION DRAWINGS AND STRESSING CALCULATIONS
5.1 — General
5.2 — System drawings
5.3 — Tendon drawings
5.3.1 — Plans and elevations
5.3.2 — Sections
5.3.3 —Measurements
5.3.4 — Tolerances
5.3.5 — Stressing data
5.3.6 — Material take-off
5.3.7 — Temporary openings for PT work
5.3.8 — Installation requirements
5.4 — Stressing calculations
6.0 — QUALITY ASSURANCE AND QUALITY CONTROL (QA/QC)
6.1 — QA program
6.2 — Procurement
6.3 — Project quality plan
6.4 — Receiving
6.4.1 — Wedges
6.4.2 — Prestressing steel
6.4.3 — Anchorages
6.5 — Identification and traceability of materials
6.6 — Sampling of prestressing material
6.7 — Defects during installation
7.0 — PERSONNEL QUALIFICATIONS
7.1 — Supervision
8.0 — SHIPPING AND STORAGE OF MATERIALS
8.1 — General
8.2 — Anchorages
8.3 — Wedges
8.4 — Metal duct
8.5 — Plastic duct
8.6 — Strand
8.7 — Bars
8.8 — Cement and grout
8.9 — Accessories
9.0 — BEARING PLATE AND DUCT INSTALLATION
9.1 — General
9.2 — Measurements
9.3 — Tolerances
9.4 — Anchorage components
9.5 — Deviation pipes
9.6 — Ducts
9.7 — Accessories
9.8 — Splices and joints
9.9 — Location of grout inlets and outlets
10.0 — PLACING CONCRETE
10.1 — Precautions
10.2 — Proving of post-tensioning ducts
10.3 — Problems and remedies
11.0 — PRESTRESSING STEEL INSTALLATION
11.1 — General
11.2 — Strand
11.3 — Bar
11.4 — Corrosion protection
11.5 — Acceptance criteria
12.0 — STRESSING OPERATIONS
12.1 — General
12.2 — Maximum stress at jacking
12.3 — Stressing sequence
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 — Anchorage coating system
15.0 — REPAIRS OF HOLES AND ACCESS OPENINGS
15.1 — Openings
16.0 — REFERENCES
APPENDIX A – TYPICAL POURBACK DETAILS AND INLET AND OUTLET DETAILS
APPENDIX B – TYPICAL REPAIR DETAILS FOR ACCESS OPENINGS, BLOCKOUTS, AND HOLES