NS EN 15237 : 1ED 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Information needed for the execution of the work
5 Geotechnical investigations
    5.1 General
    5.2 Specific requirements
6 Materials and product
    6.1 General
    6.2 Raw materials of prefabricated drains
    6.3 Band drains
    6.4 Prefabricated cylindrical drain
    6.5 Sand drains
7 Considerations related to design
    7.1 Field trials
8 Execution
    8.1 Method statement
    8.2 Preparation of the site
    8.3 Drain installation
    8.4 Special aspects
9 Supervision and monitoring
    9.1 Supervision
    9.2 Monitoring
10 Records
    10.1 Records during construction
    10.2 Records at the completion of the work
11 Special requirements
    11.1 General
    11.2 Safety
    11.3 Environmental protection
    11.4 Impact on adjacent structures
Annex A (informative) Practical aspects of vertical drainage
Annex B (informative) Aspects of design
Annex C (informative) Degree of obligation of the specifications
Bibliography

Defines general principles for the execution, testing, supervision and monitoring of vertical drain projects.