Table of Contents
1.0 — Scope
2.0 — Definitions
3.0 — Specifications, Responsibilities, and Submittals
3.1 — Specifications
3.1.1 — Prescriptive specifications
3.1.2 — Performance specifications
3.1.3 — Open specifications
3.2 — Responsibilities
3.3 — Submittals
3.3.1 — General
3.3.2 — Preconstruction submittals
3.3.3 — As-built records
4.0 — Materials
4.1 — General
4.2 — Prestressing steel
4.2.1 — Strand
4.2.2 — Bar
4.2.3 — Epoxy-coated strand
4.2.4 — Epoxy-coated bar
4.2.5 — Special prestressing materials
4.2.6 — Patching materials
4.3 — Anchorages
4.4 — Couplers
4.5 — Centralizers and spacers
4.6 — Corrosion-inhibiting compounds
4.6.1 — Grease
4.6.2 — Gel
4.6.3 — Wax
4.7 — Plastic tubing
4.7.1 — Bond breaker
4.7.2 — Sheath
4.7.3 — Tendon bond length encapsulations
4.8 — Heat-shrink sleeves and tapes
4.8.1 — Heat-shrink sleeves
4.8.2 — Heat-shrink tapes
4.8.3 — Petrolatum (wax) tapes
4.8.4 — Adhesive tapes
4.9 — Grout tubes
4.10 — Grout socks
4.11 — Cement grout
4.11.1 — Cement
4.11.2 — Water
4.11.3 — Aggregates
4.11.4 — Admixtures
4.11.5 — Supplemental cementitious materials
5.0 — Corrosion protection
5.1 — Design aspects
5.2 — Corrosion protection selection criteria
5.2.1 — Service life
5.2.2 — Aggressivity of anchor environment
5.2.2.1 — Soil resistivity
5.2.2.2 — pH
5.2.2.3 — Chemical properties of soil and groundwater
5.2.2.4 — Physical properties of soil and groundwater
5.2.2.5 — Potential stray current sources
5.3 — Corrosion protection requirements
5.4 — Corrosion protection details
5.4.1 — Anchorage protection
5.4.1.1 — Anchor heads
5.4.1.2 — Bearing plates and anchor head covers
5.4.1.3 — Trumpets
5.4.2 — Free stressing length protection
5.4.2.1 — Permanently unbonded free stressing length
5.4.2.2 — Fully or partially bonded free stressing length
5.4.3 — Free stressing length/bond length transition protection
5.4.4 — Tendon bond length protection
5.4.4.1 — Class I protection
5.4.4.2 — Class II protection
5.4.5 — Protection against stray currents
5.4.6 — Coupler protection
6.0 — Design
6.1 — Introduction
6.2 — Feasibility of anchors
6.3 — Design objectives
6.4 — General considerations
6.4.1 — Corrosion protection requirements
6.4.2 — Fully bonded, partially bonded, or unbonded anchors
6.4.3 — Restressable anchor systems
6.4.4 — Destressable and removable anchor systems
6.5 — Site evaluation
6.5.1 — Rock anchors
6.5.2 — Soil anchors
6.6 — Anchor design load and safety factors
6.7 — Bond length
6.7.1 — Rock anchors
6.7.2 — Soil anchors
6.8 — Free stressing length
6.9 — Anchor geometry
6.9.1 — Anchor spacing in bond length
6.9.2 — Drill hole diameter
6.9.3 — Overburden depth
6.9.4 — Anchor inclination
6.10 — Tendon components
6.10.1 — Anchorage
6.10.2 — Encapsulation
6.10.3 — Spacers and centralizers
6.11 — Grout mixture
6.12 — Grout socks
7.0 — Construction
7.1 — General
7.2 — Fabrication
7.3 — Storage and handling
7.4 — Drilling
7.4.1 — Open hole drilling
7.4.2 — Cased holes
7.4.3 — Hollow-stem augers
7.4.4 — Combination methods
7.4.5 — Hole alignment and tolerances
7.4.6 — Hole cleaning and overdrilling
7.5 — Water pressure testing, pregrouting, and redrilling rock anchor drill holes
7.6 — Tendon repairs
7.7 — Tendon insertion
7.8 — Grouting
7.8.1 — Grouting equipment and mixing
7.8.1.1 — Neat cement grouts
7.8.1.2 — Site-mixed sanded grouts
7.8.1.3 — Ready mixed sanded grouts
7.8.2 — QA/QC for mixed grout
7.8.2.1 — Preproduction lab tests
7.8.2.2 — Preproduction field tests
7.8.2.3 — Routine QA/QC during production
7.8.2.4 — Test methods for cement-based grouts
7.8.3 — Grouting operations
7.8.3.1 — Grouting uncased holes
7.8.3.2 — Grouting cased or hollow-stem auger holes
7.8.3.3 — Grouting encapsulated tendons
7.8.3.4 — Grouting very permeable ground
7.8.3.5 — Temperature considerations
7.8.4 — Post-grouting
7.9 — Installation of anchorage
8.0 — Stressing, load testing, and acceptance
8.1 — General
8.1.1 — Preparation prior to stressing
8.2 — Equipment
8.2.1 — Requirements for equipment
8.2.2 — Equipment setup
8.3 — Testing
8.3.1 — Preproduction tests
8.3.2 — Performance tests
8.3.3 — Proof tests
8.3.4 — Supplementary extended creep tests
8.4 — Lock-off procedure
8.5 — Initial liftoff reading
8.6 — Acceptance criteria
8.6.1 — Creep
8.6.2 — Movement
8.6.2.1 — Residual movement
8.6.2.2 — Minimum apparent free tendon length
8.6.2.3 — Maximum apparent free tendon length
8.6.3 — Initial liftoff reading
8.7 — Procedures in the event of failure during testing
8.8 — Finishing work for permanent anchors
8.8.1 — Cutting stressing tails
8.8.2 — Corrosion protection (Class I or II)
8.9 — Monitoring service behavior
9.0 — References
9.1 — Referenced standards
9.1.1 — ASTM International
9.1.2 — American Association of State Highway and Transportation Officials (AASHTO)
9.1.3 — American Public Health Association (APHA)
9.1.4 — American Water Works Association (AWWA)
9.1.5 — American Concrete Institute (ACI)
9.1.6 — American Petroleum Institute (API)
9.1.7 — Federal Test Method Standard (FTMS)
9.1.8 — Post-Tensioning Institute (PTI)
9.2 — Cited references
Supplement A — Supplementary requirements for epoxy-coated strand tendons
SA1.0 — Scope
SA3.0 — Specifications, Responsibilities, and Submittals
SA3.3.2 — Preconstruction submittals
SA4.0 — Materials
SA4.2.3 — Epoxy-coated strand
SA4.3 — Anchorages
SA6.0 — Design
SA6.6 — Anchor design load and safety factors
SA6.8 — Free stressing length
SA7.0 — Construction
SA7.2 — Fabrication
SA7.3 — Storage and handling
SA7.7 — Tendon insertion
SA7.9 — Installation of anchorage
SA8.0 — Stressing, Load Testing, And Acceptance
SA8.1 — General
SA8.1.1 — Preparation prior to stressing
SA8.2 — Equipment
SA8.2.1 — Requirements for equipment
SA8.3 — Testing
SA8.4 — Lock-off procedure
SA8.6 — Acceptance criteria
SA8.6.1 — Creep
SA8.6.1.1 — Creep correction values
SA8.6.1.2 — Creep test options
SA8.6.1.4 — Acceptance criteria
SA8.6.2 — Movement
SA8.6.2.2 — Minimum apparent free tendon length
SA8.7 — Procedures in the event of strand slippage through wedges
SA9.0 — References
SA9.2 — Cited references
Supplement B — Requirements for polyester resin rock anchors
SB1.0 — Scope
SB1.1 — Definitions
SB1.2 — Specification, responsibilities, and submittals
SB1.3 — Materials
SB1.4 — Corrosion protection
SB1.5 — Design
SB1.6 — Installation
SB1.7 — Testing
SB1.7.1 — Performance testing
SB1.7.2 — Proof testing