What is BS EN 14731 - Ground treatment by deep vibration about?

BS EN 14731 is a European Standard that is applicable to the planning, execution, testing, and monitoring of ground treatment by deep vibration achieved by depth vibrators and compaction probes.

The following types of treatment are covered by BS EN 14731:

Deep vibratory compaction to densify the existing ground
Vibrated stone columns to form a stiffened composite ground structure by the insertion of granular material which itself shall be densified. Generally, stone columns have a diameter greater than 0,6 m and lower than 1,2 m.

The following treatment methods are covered by BS EN 14731:

Methods in which depth vibrators, containing oscillating weights which cause horizontal vibrations, are inserted into the ground
Methods in which compaction probes are inserted into the ground using a vibrator that remains at the ground surface and which in most cases oscillates in a vertical mode.

Note: The following treatment methods, among others, are not included in BS EN 14731:

Methods in which sand or stone columns are installed by means of impact or top vibratory driven casing
Methods in which very stiff columns are formed either by the addition of cement to granular material or by the use of concrete or any other binder
Dynamic compaction and other methods in which some form of treatment is applied to the ground surface
Explosive compaction

Who is BS EN 14731 - Ground treatment by deep vibration for?

BS EN 14731 on the execution of special geotechnical works is useful for:

Roadway / highway authorities
Contractors working on roadway / highway projects
Landscapers
Relevant government bodies
Contractors working on civil construction projects
Civil engineers
Construction – builders / real estate developers
Geotechnical engineers and consultants
Site investigators
Land/soil assessment researchers

Why should you use BS EN 14731 - Ground treatment by deep vibration?

Vibro-compaction is a ground-improvement technology for transferring structural loads to more appropriate levels in poor ground conditions.

The method of treatment and equipment employed in BS EN 14731 is suitable to achieve the depth of treatment and the design objectives in the prevailing ground conditions. They are designed, prepared, and maintained in a manner suitable for the safe movement and working of the ground treatment equipment.

BS EN 14731 guidelines are a step towards mitigating risks associated with soil shifting, and keep stakeholders safe while executing the project with minimal waste.

BS EN 14731:2005

Execution of special geotechnical works. Ground treatment by deep vibration

Current, Under Review

Published:

24 Nov 2005