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.