EN ISO 22477-5:2018 PDF

Overview

EN ISO 22477-5:2018 - Geotechnical investigation and testing: Testing of grouted anchors defines standardized procedures for performing tension tests on anchors grouted in the ground. The document sets out requirements for test equipment, measurement apparatus, test execution, result presentation and record content for verification of anchor performance. It is aligned with EN 1997-1 and EN 1537 but does not prescribe proof-load magnitudes or acceptance criteria (these are covered in EN 1997-1 or national application documents).

Key topics and technical requirements

• Three recognized test methods
  • Test Method 1: Cyclic tension loading with measurement of displacement at defined load stages.
  • Test Method 2: Cyclic tension loading with measurement of load loss at defined load stages.
  • Test Method 3: Step-loading with measurement of displacement under successive maintained tension levels.
• Equipment and setup
  • Specifications for reaction systems, loading devices, and test loading set‑ups.
  • Requirements for load measurement (load cells, calibration) and displacement measurement (mechanical/optical devices).
  • Time and temperature recording where relevant.
• Test types
  • Investigation tests, suitability tests and acceptance tests - each with tailored loading procedures and reporting requirements.
• Execution details
  • Test location, preparation, test-anchor handling, time between installation and testing, proof load and datum load procedures.
  • Guidance on group testing and alternating load testing.
• Reporting and data
  • Defined presentation of test results, required measurements, checks and the content of test records.

Practical applications

• Quality control and acceptance of grouted anchors used in foundations, retaining structures, slope stabilisation, tunnelling and temporary works.
• Design verification for geotechnical engineers to confirm bond and structural behaviour of anchors in-situ.
• Contractor and site testing to demonstrate compliance with contract or national requirements.
• Research and development for anchor system performance, durability and load-displacement behaviour.

Who should use this standard

• Geotechnical and structural engineers specifying or verifying anchors
• Site testing teams and geotechnical contractors performing load tests
• Testing laboratories and certification bodies
• Project managers and clients needing standardized acceptance procedures

Related standards

• EN 1997-1 (Eurocode 7) - geotechnical design requirements and acceptance criteria
• EN 1537 - anchors for use in geotechnical engineering (referenced for definitions and context)

Keywords: EN ISO 22477-5:2018, grouted anchors, anchor testing, geotechnical testing, tension tests, displacement measurement, load loss, step-loading, EN 1997-1.