ISO 22476-14-2020 PDF

Full title and description

ISO 22476-14:2020 — Geotechnical investigation and testing — Field testing — Part 14: Borehole dynamic probing. This international standard specifies equipment, execution and reporting requirements for borehole dynamic probing used in geotechnical site investigation and testing.

Title in French: Reconnaissance et essais géotechniques — Essais en place — Partie 14: Sondage dynamique en forage.

Abstract

This document sets out technical requirements for equipment, implementation and reporting of borehole dynamic probing so as to reduce incorrect appraisals of subsoil conditions and to limit scatter in probing results caused by equipment and procedures. It is intended to satisfy geotechnical investigation requirements referenced in EN 1997-1 and EN 1997-2.

Published edition: 1 (2020). The ISO bibliographic record shows the standard was published in February 2020 and was reviewed and confirmed during its five‑year review cycle.

General information

• Status: Published and confirmed (reviewed as current during the ISO five‑year review process).
• Publication date: 19 February 2020 (ISO publication, February 2020).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 93.020 — Earthworks; excavations; foundation construction; underground works.
• Edition / version: Edition 1, 2020.
• Number of pages: 20 pages in the ISO edition (national/adopted versions sometimes show different pagination—commonly reported as 20–28 pages depending on national formatting).

Scope

ISO 22476-14:2020 applies to borehole dynamic probing as a field testing method for geotechnical site investigation. It specifies the minimum technical requirements for probing equipment, details on test execution (including probe types, hammer energy, penetration measurement and quality control), and reporting requirements so results are consistent and comparable across projects and operators. The scope includes recommendations to avoid equipment- or procedure‑related bias and to limit scatter in results used for subsurface characterization and foundation design.

Key topics and requirements

• Definition and scope of borehole dynamic probing as an in‑situ geotechnical test.
• Equipment requirements (probe assemblies, hammers/energy sources, rods, guides and ancillary instruments).
• Procedures for performing dynamic probing in boreholes, including drop‑counting, energy calibration and penetration measurement.
• Quality control measures to reduce variability due to equipment and execution.
• Data recording and minimum reporting content (test location, soil/strata descriptions, hammer energy, blow counts/penetration, anomalies and test limitations).
• Relationship of borehole dynamic probing results to geotechnical investigation requirements (e.g., use in accordance with EN 1997 parts where applicable).

Typical use and users

This standard is used by geotechnical and civil engineers, site investigation contractors, drilling and probing service providers, testing laboratories, project designers (foundations, earthworks), and regulatory authorities. Typical applications include preliminary and detailed site investigations, correlation of in‑situ probing data with laboratory tests, and as an input to foundation and ground improvement design.

Related standards

ISO 22476-14 is part of the ISO 22476 series (field testing) which includes other parts covering cone and piezocone tests, dynamic probing, standard penetration test, pressuremeter tests, dilatometer tests, mechanical CPT, measuring while drilling, borehole shear tests and others. Relevant complementary standards include EN 1997‑1 / EN 1997‑2 (Eurocode 7) for geotechnical design and other ISO 22476 parts addressing different in‑situ test methods.

Keywords

borehole dynamic probing; borehole probing; dynamic probing; in-situ testing; geotechnical investigation; field testing; ISO 22476; equipment requirements; test execution; reporting; EN 1997.

FAQ

Q: What is this standard?

A: ISO 22476-14:2020 is an international standard that defines equipment, procedures and reporting requirements for borehole dynamic probing used in geotechnical site investigations.

Q: What does it cover?

A: It covers technical specifications for probe assemblies and hammers, recommended execution procedures (including energy calibration and blow/penetration measurement), quality control to limit result scatter, and minimum reporting content for borehole dynamic probing campaigns.

Q: Who typically uses it?

A: Geotechnical engineers, site investigation contractors and drilling/probing service providers, testing laboratories, foundation designers and regulatory bodies use the standard to ensure consistent, comparable probing data for subsurface characterization.

Q: Is it current or superseded?

A: The document was published in February 2020 (Edition 1) and has been reviewed and confirmed during the ISO periodic review process; the ISO bibliographic record lists it as published and confirmed (current) as of its last review.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 22476 series on geotechnical field testing (other parts cover cone/piezocone tests, SPT, pressuremeter tests, dilatometer tests, CPTM, measuring while drilling, borehole shear tests, etc.).

Q: What are the key keywords?

A: Borehole dynamic probing, dynamic probing, borehole probing, in‑situ testing, geotechnical investigation, field testing, test equipment, test execution, reporting, ISO 22476.