What is Rotary Bored Piling?
Bored piles are often larger diameter than conventional continuous flight auger (CFA) piles and are used to support greater loads, overcome underground obstructions, penetrate ground too hard to bore using a continuous flight auger or create piles with a cut-off level beneath the platform level.
What is the grade of concrete for bored cast in situ piles in general?
The grade of concrete to be used for piling should be minimum M25 (or as as required at the site for load conditions) with the minimum cement content of 400 kg/m3. Mixing is carried out in mechanical mixer only.
What is situ pile?
Cast in situ piles are those piles, which are cast in position inside the ground. They are installed by pre excavation, thus eliminating vibration due to driving and the handling the stresses.
What does cast in situ mean?
In-Situ Concrete cast in place. In-situ is concrete that as poured into formwork at the building site. When compared to pre-cast concrete, in-situ requires no crane or forklift to get it into position.
What is bored pile?
Bored piles are cylindrical bodies made of concrete (with or without reinforcement) which are installed in the ground by a variety of methods. They transmit high structural loads into lower, load-bearing soils.
How deep can piles go?
Usual depths for concrete precast piles range from a few meters to around 30 m, but under special circumstances piles have been driven down to 150 m! Steel circular piles in offshore works can go much deeper.
How does a bored pile work?
The large diameter bored piles are foundation structure characterized by a cylindrical shape with a diameter larger than 600 mm; manufactured by excavating ground through a rotary drilling equipment with a complete soil removal and cast in place by casting concrete into the borehole.
What is socketed H pile?
Socketed steel H-pile, which is a replacement pile, is one of the popular foundation systems. Such a pile is formed by inserting a steel H-pile into a pre-bored hole, and subsequently grouting the hole with cement grout. Various methods have been proposed in the literature for designing them 1. 1979.
What is process of installing a shell pile?
The installation of such piles is readily organized as a production- line method by separating the total operation into four basic processes: driving of the upper shells, extrac- tion of the soil from their cavities, driving hollow reinforced concrete piles into the base of the shells, and filling of the cavities of …
Is 2911 bored cast in situ piles?
The bored cast-in-situ piles having bulb(s) known as under-reamed piles are covered in IS : 2911 ( Part III )-1980*.
Is 2911 driven pile?
fS : 2911 ( Part l/Set 3 ) – 1979 This section covers the driven precast concrete piles. In this revision, an appendix on the deter- mination of load-carrying capacity of piles by static formula has been added.
Is pile a cap code?
6.12. 1 The pile caps may be designed by assuming that the load from column is dispersed at 45ยบ from the top of the cap to the mid-depth of the pile cap from the base of the column or pedestal.