CONCRETE PREFABRICATION FOUNDATION PILE TYPES: 250x250, 300x300, 400x400 mm
Made to comply with PN- EN 12794 + A1: 2008 which is an implementation of the European standard:
EN 12794: 2005 + A1: 2007 Precast concrete products – Foundation piles
Purpose and range of uses for the product
Prefabricated foundation piles are reinforced piles installed in the ground using stroke ramming. These foundation elements may be used in all natural soils and landfills which are suitable for general reinforced concrete driven piles. Used mainly for transferring significant loads through deeper placed, more resistant layers and to prevent excessive or uneven structure settlement.
Technical requirements for use of product
Reinforced concrete piles are used as elements of supports to ensure proper stability of the structure being erected. This method of foundation is used mainly in situations where load-bearing layers of the base are located at significant depths and it would be impossible or economically unsound to dig an open trench.
Detailed technical conditions for use of reinforced concrete piles are defined separately for each investment and stated in the detailed design, which includes the following:
- Engineering and geological conditions which determine the method of operation of pile foundation, pile support in the structural base layer and preliminary length of piles
- Construction of a facility which determines the distribution and conditions for pile supporting in the foundation and the cooperation of a pile foundation with base
- Constant and variable loads which define the number and length of piles to be used as well as the use of vertical or slant piles
Reinforced concrete piles are made with lengths from 6.0 m to 16.0 m as a single element, the piles may be connected using a joint or made to applicable length (defined in the design), a single length module is 1m. Cross section of piles: 250x250 mm, 300x300 mm, 400x400 mm
Technical description of the product
Reinforced piles were designed in line with the current technical standards. Each pile has three parts: a top, shaft and base. The structures of pile top and base are identical but differ between shafts by the reinforcement and distances between stirrups.
Longitudinal reinforcement is made of 12 to 28 mm diameter piles located in the corners of a prefabricated element. Larger diameter main reinforcement piles can be used, depending on the technical documents supplied. Reinforcement steel class A-IIIN is used as the main reinforcement.
Parameters of concrete for prefabricated elements: min. class C40/50 (B50), min. frost resistance F-150, min. water tightness W-8, factor water to cement coefficient <0.4. Usually Portland cement CEM I 52.5 R is used for preparation of cement mix.
TYPICAL LAYOUT OF REINFORCEMENT FOR PILES 250x250, 300x300, 400x400 mm