NF EN ISO 22476-1

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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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

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:

  1. type of cone penetration test;
  2. application class;
  3. penetration length or penetration depth;
  4. elevation of the ground surface or the underwater ground surface at the location of the cone penetration test with reference to a datum;
  5. location of the cone penetration test relative to a reproducible fixed location reference point;
  6. 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
  • 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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