NF EN ISO 22476-1

February 2013

Standard Cancelled

Geotechnical investigation and testing - Field testing - Part 1 : electrical cone and piezocone penetration tests

ISO 22476-1:2012 deals with equipment requirements, the execution of and reporting on electrical cone and piezocone penetration tests as part of geotechnical investigation and testing according to EN 1997‑1 and EN 1997‑2. Within the electrical cone and piezocone penetration test, two subcategories of the cone penetration test are considered: electrical cone penetration test (CPT), which includes measurement of cone resistance and sleeve friction; piezocone test (CPTU), which is a cone penetration test with the additional measurement of pore pressure. The CPTU is performed like a CPT with the measurement of the pore pressure at one or several locations on the penetrometer surface. ISO 22476-1:2012 specifies the following features: type of cone penetration test; application class; penetration length or penetration depth; elevation of the ground surface or the underwater ground surface at the location of the cone penetration test with reference to a datum; location of the cone penetration test relative to a reproducible fixed location reference point; pore pressure dissipation tests.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2013

Number of pages

50 p.

Reference

NF EN ISO 22476-1

ICS Codes

93.020 Earthworks. Excavations. Foundation construction. Underground works

Classification index

P94-521-1

Print number

1 - 07/02/2013

International kinship

ISO 22476-1:2012

European kinship

EN ISO 22476-1:2012

Sumary

Geotechnical investigation and testing - Field testing - Part 1 : electrical cone and piezocone penetration tests

Within the electrical cone and piezocone penetration test, two subcategories of the cone penetration test are considered:

electrical cone penetration test (CPT), which includes measurement of cone resistance and sleeve friction;
piezocone test (CPTU), which is a cone penetration test with the additional measurement of pore pressure.

The CPTU is performed like a CPT with the measurement of the pore pressure at one or several locations on the penetrometer surface.

ISO 22476-1:2012 specifies the following features:

type of cone penetration test;
application class;
penetration length or penetration depth;
elevation of the ground surface or the underwater ground surface at the location of the cone penetration test with reference to a datum;
location of the cone penetration test relative to a reproducible fixed location reference point;
pore pressure dissipation tests.

Standard replaced by (1)

NF EN ISO 22476-1

January 2023

Standard Current

Geotechnical investigation and testing - Field testing - Part 1 : electrical cone and piezocone penetration test

This document establishes equipment, procedural and reporting requirements and recommendations on cone and piezocone penetration tests. NOTE This document fulfils the requirements for cone and piezocone penetration tests as part of geotechnical investigation and testing according to the EN 1997 series. This document specifies the following features: a) type of cone penetration test; b) cone penetrometer class according to Table 2; c) test categories according to Table 3; d) penetration length or penetration depth; e) elevation of the ground surface or the underwater ground surface at the location of the cone penetration test with reference to a datum; f) location of the cone penetration test relative to a reproducible fixed location reference point; g) pore pressure dissipation tests. This document covers onshore and nearshore cone penetration test (CPT). For requirements for offshore CPT, see ISO 19901-8.

Table of contents

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Avant-propos
v
Introduction
vi
1 Domaine d'application
1
2 Références normatives
2
3 Termes, définitions et symboles
2
3.1 Termes et définitions
2
3.2 Symboles
8
4 Appareillage
9
4.1 Pointe pénétrométrique
9
4.2 Tolérances
10
4.3 Rugosité de surface
10
4.4 Cône
10
4.5 Manchon de frottement
11
4.6 Élément filtrant
12
4.7 Gorges pour joints et joints
14
4.8 Tiges de fonçage
14
4.9 Système de mesure
14
4.10 Engin de fonçage
15
5 Modes opératoires d'essai
16
5.1 Choix de la pointe pénétrométrique
16
5.2 Choix de l'appareillage et des modes opératoires
16
5.3 Position et niveau de l'engin de fonçage
18
5.4 Préparation de l'essai
19
5.5 Fonçage de la pointe pénétrométrique
19
5.6 Utilisation d'un réducteur de frottement
20
5.7 Fréquence de consignation des paramètres
20
5.8 Enregistrement de la longueur de pénétration
20
5.9 Essai de dissipation de la pression interstitielle
20
5.10 Fin de l'essai
21
5.11 Vérifications et étalonnages de l'appareillage
21
5.12 Exigences de sécurité
22
6 Résultats d'essai
22
6.1 Paramètres mesurés
22
6.2 Correction de paramètres
22
6.3 Paramètres calculés
24
7 Compte rendu
24
7.1 Généralités
24
7.2 Compte rendu des résultats d'essai
24
7.3 Présentation des résultats d'essai
26
7.4 Présentation des résultats d'essai et des paramètres calculés
27
Annexe A (normative) Maintenance, vérifications et étalonnage
29
Annexe B (normative) Calcul de la profondeur de pénétration
33
Annexe C (informatif) Correction du frottement latéral sur le manchon pour tenir compte de la pression interstitielle de l'eau
34
Annexe D (informatif) Préparation du piézocône
35
Annexe E (informatif) Incertitudes lors des essais à la pointe pénétrométrique
36
Bibliographie
38

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