About CEN
The European Committee for Standardization is one of three European Standardization Organizations (together with CENELEC and ETSI) that have been officially recognized by the European Union and by the European Free Trade Association (EFTA) as being responsible for developing and defining voluntary standards at European level.
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Project
| Reference | EN 15237:2007 |
|---|---|
| Title | Execution of special geotechnical works - Vertical drainage |
| Work Item Number | 00288012 |
| Abstract/Scope | This European Standard establishes general principles for the execution, testing, supervision and monitoring of vertical drain projects. This European Standard includes the application of prefabricated vertical drains and sand drains and deals with requirements to be placed on design, drain material and installation methods. This European Standard applies to the improvement of low-permeability, highly compressible soils by vertical drainage and preloading. Information regarding loading (embankment, vacuum or ground water lowering) and preloading is given in informative Annexes A and B. Vertical drainage is used both in on land and in marine constructions for the following purposes: (pre-)consolidation and reduction of post-construction settlements; speeding up the consolidation process by decreasing the path lengths for pore water dissipation; increase of stability (by increasing effective stresses in the soil); groundwater lowering; mitigation of liquefaction effects. In each case there is an overall treatment of the soil (the volume of the drains is small in relation to the soil volume treated). This European Standard does not include soil improvement by means of wells, gravel and stone columns, large-diameter geotextile enclosed columns or reinforcing elements. Vertical drainage can also be combined with other foundation or ground improvement methods, e.g. electro osmosis, piles and compacted sand piles, dynamic compaction and deep mixing. Guidance on practical aspects of vertical drainage, such as investigation of drain properties, execution procedures and equipment, is given in Annex A. Investigation of soil characteristics and assessment of design parameters, which are affected by drain properties and execution, are presented in Annex B. |
| Status |
Published
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| Reference Document | |
| date of Availability (DAV) | 2007-02-28 |
| ICS | 93.020 - Earthworks. Excavations. Foundation construction. Underground works |
| A-Deviation(s) | |
| Special National Condition(s) |
Legal
| Directive(s) | |
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| Mandate(s) | |
| Citation in OJEU |
Implementation Dates
| date of Ratification (DOR) (1) | 2007-01-07 |
|---|---|
| date of Availability (DAV) (2) | 2007-02-28 |
| date of Announcement (DOA) (3) | 2007-05-31 |
| date of Publication (DOP) (4) | 2007-08-31 |
| date of Withdrawal (DOW) (5) | 2007-08-31 |
Relations
| Supersedes | |
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| Superseded by | |
| Normative reference (6) |
EN 13252:2000
EN 1997-1
EN ISO 10319 EN ISO 10320 EN ISO 10321 EN ISO 11058 EN ISO 12956 EN ISO 12958:1999
EN ISO 14688 series
EN ISO 9862 ENV 1997-2 |
| Sales Points |
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(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
In the case of undated standard, a link to the last dated version is provided.
In the case of series, a link to each standard identified in the series is provided.
We also invite you to check (via the website) whether corrigenda and/or amendments shall be read in conjunction with the main standard.