The Franki pile is a driven, cast-in-situ concrete displacement pile with an enlarged base in dry concrete and a cylindrical shaft. Dulce Simoes 7th December Piling. It takes more than the highest levels of ground engineering expertise and experience to be Keller’s Franki Africa. FRANKI DRIVEN CAST-IN-SITU PILES (DCIS). The Franki pile has been used extensively throughout Southern Africa for over 65 years and is still today one of.
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The shaft of the pile is formed by ramming successive layers of “dry concrete”, raising the casing 0. The Yacht Club, a … Read More. Franki Africa Frankipart of the Keller group, has developed a reputation throughout Africa for its innovative and cost-effective solutions for geotechnical work in the marine environment. One such project was the recently completed construction of a m-long quay wall with a draft of The Franki pile process has undergone several reformations since it was conceived.
Franki Piles | Hayward Baker
Established in and Executed plenty big piling projects in Iraq. For the prestigious new Umhlanga Arch development, north of …. Due to the ramming process, the concrete is in close contact with the soil and in this way a cylindrical shaft is obtained, which is resting on an enlarged base, formed to refusal in the bearing layer.
The pile shaft can also be made of “wet concrete”, which speeds up the construction process. Among the important skills required to wear this crown, especially in these times of challenging economic conditions, are the abilities to reconfigure original … Read More.
Alternatively, the steel casing can be installed by “top-driving”, using ordinary drop hammers. Concreting of the shaft. This page was last edited on 6 Octoberat Both vertical piles and inclined piles can be executed tilted up to 4: Retrieved from ” https: The raked shafts are always reinforced over their whole length.
Successive charges of zero slump concrete are rammed into the soil, simultaneously withdrawing the tube. The Franki piling system also called pressure -injected footing is a method used to drive expanded base cast- in-situ concrete Franki piles.
Geotechnical engineering Civil engineering Foundations buildings and structures. Enlarged “Franki” base When the tube has been driven to the required depth, the casing is very slightly raised and maintained in position with the aid of steel cables. B ridge structures Wind power plants Crane tracks Dock bases Industrial buildings Heavy-duty surfaces and much more.
Bottom driving with an internal hammer. Maximum lengths are of the order of 25 m, although the length usually used is less than 20 m. Views Read Edit View history. The concrete is rammed with a 2 to 4 ton hammer while the tube is kept in position by steel cables. Due to the compression of the concrete plug, a water-tight bottom plug is created which prevents soil or water from entering the casing.
In that case, the driving casing must be provided with a lost bottom plate.
The Franki pile, known and used worldwide, was developed at the turn of the century by the Belgian engineer Frankignoul. The outside diameter of the cage varies according to the size of the tube being used. The concrete of the shaft is compacted using the drop hammer, piel diameter of which is smaller frank that of the reinforcement. Laxmi Publications P Ltd. As Managing Director Errol Braithwaite says: For Keller company, Franki Africa, which is in the process of doing the geotechnical work, this prestigious project has been somewhat of a milestone.
By expulsion of a dry concrete plug, the soil surrounding the pile base is improved and thus the initial soil bearing ftanki can be increased significantly. A thick-walled steel casing is placed vertically on the ground. The construction of each Franki Pile is molded to the ground conditions at each pile location, and can safely withstand very high compressive and tensile forces and substantial horizontal loads.
It is interesting that in both the below marine projects, one of the common themes is great teamwork …. Under its impact the concrete forms a plug at the bottom of the casing which penetrates slightly into the soil.
This process is similar to ordinary driven cast-in-situ piles. Alternatively, a pre-fabricated pile shaft can be used. In North America, the Franki system is known as pressure injected footing. Typical Franki pile dimensions range from 0.
Franki shafts may franji installed raked. People struggle to make a living in Tugela Ferry and the harsh conditions …. Franki piles can be used as high-capacity deep foundation elements without the necessity of excavation or dewatering. The use of this product in the building industry for over years is due to its sophisticated technology, the high standards of execution and the outstanding economic viability. From Wikipedia, the free encyclopedia. Edgard Frankignoul applied for the production patent for the Franki pile in July For piles subject to uplift forces, the reinforcement is anchored in the enlarged base, thus providing high pull-out resistance.
Franki Piles (PIFs)
People struggle to make a living in Tugela Ferry and the harsh conditions … Read More. Pile foundations in Engineering Practicep. A special concrete bucket is used to pour a certain amount of nearly dry concrete into the bottom of the driving tube.
This operation is checked with marks made on the driving cable of the hammer and on the lifting cables.