SIST EN 1997-2:2024/oprA1:2026

Eurocode 7 - Geotechnical design - Part 2: Ground properties

1.1   Scope of FprEN 1997-2
(1)   This document provides rules for determining ground properties for the design and verification of geotechnical structures.
(2)   This document covers requirements and guidance for planning ground investigations, collecting information about ground properties and groundwater conditions, and preparation of the Ground Model.
(3)   This document covers requirements and guidance for the selection of field investigation and laboratory test methods to obtain derived values of ground properties.
(4)   This document covers requirements and guidance on the presentation of the results of ground investigation, including derived values of ground properties, in the Ground Investigation Report.
1.2   Assumptions
(5)   The provisions in FprEN 1997-2 are based on the assumptions given in EN 1990 and FprEN 1997-1.
(6)   This document is intended to be used in conjunction with FprEN 1997-1, which provides general rules for design and verification of all geotechnical structures.
(7)   This document is intended to be used in conjunction with prEN 1997-3, which provides specific rules for design and verification of certain types of geotechnical structures.
(8)   This document is intended to be used in conjunction with FprEN 1998-1-1 which provides the requirements for the ground properties needed to define the seismic action.
(9)   This document is intended to be used in conjunction with FprEN 1998-5 which provides rules for the design of geotechnical structures in seismic regions.

Eurocode 7 - Entwurf, Berechnung und Bemessung in der Geotechnik - Teil 2: Baugrundeigenschaften

Eurocode 7 - Calcul géotechnique - Partie 2 : Propriétés des terrains

Evrokod 7 - Geotehnično projektiranje - 2. del: Lastnosti tal

1.1 Področje uporabe FprEN 1997-2
(1) Ta dokument določa pravila za določanje lastnosti tal za načrtovanje in preverjanje geotehničnih konstrukcij.
(2) Ta dokument zajema zahteve in smernice za načrtovanje raziskav tal, zbiranje informacij o lastnostih tal in pogojih podtalnice ter pripravo modela tal (Ground Model).
(3) Ta dokument zajema zahteve in smernice za izbiro metod terenskih raziskav in laboratorijskih preizkusov za pridobitev izpeljanih vrednosti lastnosti tal.
(4) Ta dokument zajema zahteve in smernice za predstavitev rezultatov raziskav tal, vključno z izpeljanimi vrednostmi lastnosti tal, v poročilu o raziskavi tal (Ground Investigation Report).
1.2 Predpostavke
(5) Določbe v FprEN 1997-2 temeljijo na predpostavkah, podanih v EN 1990 in FprEN 1997-1.
(6) Ta dokument je namenjen uporabi v povezavi s FprEN 1997-1, ki zagotavlja splošna pravila za načrtovanje in preverjanje vseh geotehničnih konstrukcij.
(7) Ta dokument je namenjen uporabi v povezavi s prEN 1997-3, ki zagotavlja specifična pravila za načrtovanje in preverjanje določenih vrst geotehničnih konstrukcij.
(8) Ta dokument je namenjen uporabi v povezavi s FprEN 1998-1-1, ki zagotavlja zahteve za lastnosti tal, potrebne za opredelitev seizmičnega delovanja.
(9) Ta dokument je namenjen uporabi v povezavi s FprEN 1998-5, ki zagotavlja pravila za načrtovanje geotehničnih konstrukcij v seizmičnih območjih.

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Jul-2026
• ICS: 91.010.30 - Technical aspects
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: KON - Structures
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 17-Jun-2026
• Due Date: 04-Nov-2026
• Ref Project: EN 1997-2:2024/prA1 - Eurocode 7 - Geotechnical design - Part 2: Ground properties

Overview

SIST EN 1997-2:2024/oprA1:2026 (Eurocode 7 - Geotechnical design - Part 2: Ground properties) is a draft amendment to the European Standard EN 1997-2:2024, developed by the Slovenian Institute for Standardization (SIST). This standard focuses on providing comprehensive rules and guidance for determining ground properties essential for geotechnical design and verification of various structures. It outlines best practices for ground investigation, sampling, laboratory testing, and the development of accurate ground models used in foundation construction and related civil engineering works.

Key Topics

Ground Investigation Planning

• Establishes protocols for collecting comprehensive data on ground and groundwater conditions.
• Offers methodologies for planning effective ground investigations, including field and laboratory test selection.

Determination of Ground Properties

• Provides guidance for obtaining and deriving values of key ground properties.
• Specifies requirements for evaluating geotechnical parameters essential for design, such as state, physical, and chemical properties.

Ground Investigation Report

• Sets out requirements for the content, structure, and presentation of ground investigation results.
• Emphasizes clear reporting of derived values to inform geotechnical design processes.

Harmonization and Applicability

• Ensures consistency with other key Eurocodes and standards to facilitate integrated structural and geotechnical design.
• Includes modifications and editorial updates for terminology, normative references, and symbol definition consistency.

Applications

The practical applications of SIST EN 1997-2:2024/oprA1:2026 span all geotechnical and civil engineering projects, such as:

• Foundation Design: Establishes reliable characterisation of ground properties for the safe design of building and infrastructure foundations.
• Earthworks and Excavations: Supports risk assessment and design of temporary/permanent earth retaining structures and excavations.
• Underground Works: Assists in the geotechnical evaluation required for tunnels and other underground structures.
• Infrastructure Projects: Critical for highways, railways, bridges, and dams, where ground conditions directly impact structural performance.
• Seismic Design: Provides reference information required for defining ground properties relevant to seismic action.

By following this standard, engineers and project teams can achieve:

• Improved accuracy in ground modeling, reducing design uncertainties and project risks.
• Harmonized reporting for easier regulatory compliance and project documentation.
• Enhanced safety and reliability for structures interacting with diverse ground conditions.

Related Standards

SIST EN 1997-2:2024/oprA1:2026 is designed to complement and be used in conjunction with several other key standards:

• EN 1997-1:2024+A1:2026 (Eurocode 7 Part 1): Main geotechnical design rules for all structures.
• EN 1997-3:2025+A1:2026: Specific rules for certain types of geotechnical structures.
• EN 1998-1-1:2024+A1:2026 (Eurocode 8): Defines requirements for ground properties in seismic regions.
• EN 1998-5:2024+A1:2026: Specialized guidance for geotechnical design in seismic conditions.
• EN 1990 (all parts): General basis of structural and geotechnical design principles.

Implementing SIST EN 1997-2:2024/oprA1:2026 ensures compliance with European and Slovenian best practice for ground investigations and geotechnical parameter evaluation, supporting the delivery of safe, effective, and code-compliant civil engineering projects.

Keywords: Eurocode 7, geotechnical design, ground properties, ground investigation, foundation construction, earthworks, laboratory testing, ground model, SIS EN 1997-2, civil engineering standards, seismic design, ground investigation report, European standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Evrokod 7 - Geotehnično projektiranje - 2. del: Lastnosti tal
Eurocode 7 - Geotechnical design - Part 2: Ground properties
Eurocode 7 - Entwurf, Berechnung und Bemessung in der Geotechnik - Teil 2:
Baugrundeigenschaften
Eurocode 7 - Calcul géotechnique - Partie 2 : Propriétés des terrains
Ta slovenski standard je istoveten z: EN 1997-2:2024/prA1
ICS:
91.010.30 Tehnični vidiki Technical aspects
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 1997-2:2024
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
June 2026
ICS 91.010.30
English Version
Eurocode 7 - Geotechnical design - Part 2: Ground
properties
Eurocode 7 - Calcul géotechnique - Partie 2 : Propriétés Eurocode 7 - Entwurf, Berechnung und Bemessung in
des terrains der Geotechnik - Teil 2: Baugrundeigenschaften
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 250.

This draft amendment A1, if approved, will modify the European Standard EN 1997-2:2024. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1997-2:2024/prA1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modifications throughout the whole document . 4
2 Modification to the European foreword . 4
3 Modifications to the Introduction . 4
4 Modifications to Clause 2, “Normative references” . 4
5 Modifications to Clause 3, “Terms and definitions” . 4
6 Modifications to Clause 5, “Ground invest
...