What is BS EN 12699 - Execution of displacement piles about?
BS EN 12699 is a European Standard that covers the execution of special geotechnical work, enabling safety, performance, and efficient operations in geotechnical applications.
BS EN 12699 establishes general principles for the execution of displacement piles, which means piles that are installed in the ground without excavation or removal of material from the ground except for limiting heave and/or limiting vibration as well as the removal of obstructions or to assist penetration.
Piles are driven into the ground using impact, vibration, pressing, screwing, or a combination of these methods.
The material of displacement piles covered by BS EN 12699 can be:
- Steel
- Cast iron
- Concrete, mortar
- Timber
- Grout
- A combination of above
BS EN 12699 covers prefabricated, cast in situ, or a combination of these methods to form displacement piles of regular shape.
Other than practical considerations there are for the purpose of BS EN 12699 no limitations regarding cross-section dimensions, shaft or base enlargements, length, or rake.
The provisions of BS EN 12699 apply to:
- Single piles
- Pile groups
- Concrete sheet piles
Columns constructed by ground improvement techniques (such as mixed in situ columns, jet grouting, compaction grouting, Vibro flotation, stone columns) are not covered by BS EN 12699.
Who is BS EN 12699 - Execution of displacement piles for?
BS EN 12699 on the execution grouting is relevant to:
- Builders / real estate developers / architects
- Contractors
- Civil engineers
- Geotechnical engineers and consultants
- Site investigators
- Land/soil assessment companies
Why should you use BS EN 12699 - Execution of displacement piles?
Displacement piles are load-bearing columns that are meant to be erected without spoil material (ground soil that has been removed). Instead, specialized machinery is utilized to lateralize dirt, compacting it into the surrounding ground.
BS EN 12699 is helpful to identify all ground formations and layers affecting the construction, to determine the relevant properties of the ground, and to recognize the ground conditions.
BS EN 12699 provides you with guidance on materials and products, including constituents such as concrete, and grout, enabling you to comply with material and product requirements.
BS EN 12699 provides users guidance on execution of special geotechnical work, including construction tolerances, excavation, reinforcement, concreting, trimming, and pile walls, enabling prevention of uncontrolled inflow of water and soil into the bore.
The adoption of BS EN 12699 allows you to standardize the physical and dimensional aspects of displacement piles, enabling the efficient execution of special geotechnical work and minimization of backfill.
What’s changed since the last update?
BS EN 12699:2015 supersedes BS EN 12699:2001 which is withdrawn. BS EN 12699:2015 includes some technical and editorial changes with respect to BS EN 12699:2001. These include:
- Driven piles independent of dimension are included
- Sections describing concrete and testing have been minimized
