SIST EN ISO 22476-2:2005

Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing (ISO 22476-2:2005)

ISO 22476-2:2005 specifies requirements for indirect investigations of soil by dynamic probing within the scope of the geotechnical investigations according to prEN 1997.

Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 2: Rammsondierungen (ISO 22476-2:2005)

Reconnaissance et essais géotechniques - Essais en place - Partie 2: Essai de pénétration dynamique (ISO 22476-2:2005)

L'ISO 22476-2:2005 spécifie les exigences pour les reconnaissances indirectes du terrain par essais de pénétration dynamique dans le domaine des reconnaissances géotechniques conformes au prEN 1997.

Geotehnično preiskovanje in preskušanje - Preskušanje na terenu – 2. del: Dinamični penetracijski preskus

Ta dokument določa zahteve za posredno preiskovanje prsti z dinamičnim penetracijskim poskusom kot delom storitev geotehničnega preiskovanja v skladu s standardoma prEN 1997-1 in prEN 1997-2. Ta dokument zajema določevanje odpornosti prsti in mehkih kamnin na dinamično penetracijo konusa na kraju samem. Za zabijanje konusa se uporabi kladivo z določeno maso in višino padca. Penetracijski odpor je določen kot število udarcev, ki so potrebni, da konus prodre do določene globine. Podatki o globini se neprekinjeno zapisujejo, vendar brez zbiranja vzorcev.
Vključeni so štirje postopki, ki zajemajo številna posebna dela na udarec:
– lahek dinamični penetracijski poskus (DPL): preskus, ki predstavlja dinamično opremo v spodnjem delu masnega razpona;
– srednji dinamični penetracijski poskus (DPM): preskus, ki predstavlja srednje težko dinamično opremo;
– težek dinamični penetracijski poskus (DPH): preskus, ki predstavlja srednje do zelo težko dinamično opremo;
– zelo težek dinamični penetracijski poskus (DPSH): preskus, ki predstavlja dinamično opremo v zgornjem delu masnega razpona.
Rezultati preskusa iz tega dokumenta so zlasti ustrezni za kvalitativno določevanje talnega profila skupaj z neposrednimi raziskavami (npr. vzorčenje v skladu s standardom prEN ISO 22475-1) ali kot relativna primerjava drugih preskusov na kraju samem. Uporabijo se lahko tudi za določevanje trdnostnih in deformacijskih lastnosti prsti, običajno nekohezivnega tipa, z ustreznimi korelacijami pa jih je mogoče uporabiti tudi za drobnozrnate prsti. Rezultati se lahko uporabijo tudi za določevanje globine zelo zbitih slojev zemljine npr. da se določi dolžina nosilnih pilotov in odkrijejo zelo rahle, luknjaste, ponovno nasute ali nasute zemljine.

General Information

• Status: Published
• Publication Date: 30-Jun-2005
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: KON - Structures
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2005
• Due Date: 01-Jul-2005
• Completion Date: 01-Jul-2005
• Ref Project: EN ISO 22476-2:2005 - Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing (ISO 22476-2:2005)

Relations

• Amended By: SIST EN ISO 22476-2:2005/A1:2012 - Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing - Amendment 1 (ISO 22476-2:2005/A1:2011)
• Effective Date: 13-Sep-2010

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Geotechnical investigation and testing - Field testing - Part 2: Dynamic probing (ISO 22476-2:2005)Reconnaissance et essais géotechniques - Essais en place - Partie 2: Essai de pénétration dynamique (ISO 22476-2:2005)Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 2: Rammsondierungen (ISO 22476-2:2005)93.020Zemeljska dela. Izkopavanja. Gradnja temeljev. Dela pod zemljoEarthworks. Excavations. Foundation construction. Underground worksICS:SIST EN ISO 22476-2:2005enTa slovenski standard je istoveten z:EN ISO 22476-2:200501-julij-2005SIST EN ISO 22476-2:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 22476-2January 2005ICS 93.020English versionGeotechnical investigation and testing - Field testing - Part 2:Dynamic probing (ISO 22476-2:2005)Reconnaissance et essais géotechniques - Essais en place- Partie 2: Essai de pénétration dynamique (ISO 22476-2:2005)Geotechnische Erkundung und Untersuchung -Felduntersuchungen - Teil 2: Rammsondierungen (ISO22476-2:2005)This European Standard was approved by CEN on 4 November 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 22476-2:2005: E

Summary log for dynamic probing.14 Annex B (informative)
Record of measured values and test results for dynamic probing.15 Annex C (informative)
Recommended method to measure the actual energy.16 Annex D (informative)
Geotechnical and equipment influences on the dynamic probing results.19 Annex E (informative)
Interpretation of test results by using the dynamic point resistance.29 Bibliography.33

 Part 2: Dynamic probing
 Part 3: Standard penetration test
 Part 4:
Ménard pressuremeter test
 Part 5: Flexible dilatometer test
 Part 6: Self-boring pressuremeter test  Part 7: Borehole jack test
 Part 8: Full displacement pressuremeter test
 Part 9: Field vane test
 Part 10: Weight sounding test
 Part 11: Flat dilatometer test
 Part 12: Mechanical cone penetration test
 Part 13: Plate loading test
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard : Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

1 Scope This document specifies requirements for indirect investigations of soil by dynamic probing as part of geotechnical investigation and testing according to EN 1997-1 and EN 1997-2. This document covers the determination of the resistance of soils and soft rocks in situ to the dynamic penetration of a cone. A hammer of a given mass and given height of fall is used to drive the cone. The penetration resistance is defined as the number of blows required to drive the cone over a defined distance. A continuous record is provided with respect to depth but no samples are recovered. Four procedures are included, covering a wide range of specific work per blow:  dynamic probing light (DPL): test representing the lower end of the mass range of dynamic equipment;  dynamic probing medium (DPM): test representing the medium mass range of dynamic equipment;  dynamic probing heavy (DPH): test representing the medium to very heavy mass range of dynamic equipment;  dynamic probing super heavy (DPSH): test representing the upper end of the mass range of dynamic equipment. The test results of this document are specially suited for the qualitative determination of a soil profile together with direct investigations (e.g. sampling according to prEN ISO 22475-1) or as a relative comparison of other in situ tests. They may also be used for the determination of the strength and deformation properties of soils, generally of the cohesionless type but also possibly in fine-grained soils, through appropriate correlations. The results can also be used to determine the depth to very dense ground layers e.g. to determine the length of end bearing piles, and to detect very loose, voided, back-filled or infilled ground. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10204, Metallic products — Types of inspection documents prEN ISO 22475-1, Geotechnical investigation and testing — Sampling by drilling and excavation methods and groundwater measurements — Part 1: Technical principles for execution (ISO/DIS 22475-1:2004) 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 dynamic penetrometer cone and drive rods 3.2 dynamic probing equipment penetrometer and all equipment necessary to drive the penetrometer

Emeas energy delivered by the drive-weight assembly into the drive rod immediately below the anvil, as measured 3.11 theoretical energy Etheor energy as calculated for the drive weight assembly, Etheor = m × g × h where m is the mass of the hammer; g is the acceleration due to gravity; h is the falling height of the hammer. 3.12 energy ratio Er ratio of the actual energy Emeas and the theoretical energy Etheor
of the hammer expressed in percentage 3.13 Nxy-value number of blows required to drive the penetrometer over a defined distance x (expressed in centimetres) by the penetrometer y

a) Cone Type 1 shown as retained (fixed) b) Cone Type 2 shown as disposable (lost) Figure 1 – Alternative forms of cones for dynamic probing (for L, D and dr see Table 1) 4.4 Drive rods The rod material shall be of a high-strength steel with the appropriate characteristics for the work to be performed without excessive deformations and wear. The rods shall be flush jointed, shall be straight and may have spanner flats. Deformations shall be capable of being corrected. The deflection at the mid point of an extension rod measured from a straight line through the ends shall not exceed 1 in 1 000, i.e. 1 mm in 1 m. Dimensions and masses of the drive rods are given in Table 1. Hollow rods should be used. 4.5 Torque measuring device The torque necessary to turn the driving rods is measured by means of a torque wrench or similar measuring device. The apparatus shall be able to measure a torque of at least 200 Nm and be graduated to read at least in
5 Nm increments. A sensor for recording the torque may be used. The spanner flat in the drive rods can be used to fix the torque wrench or measuring device.

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