[Sambo EnC] Our major project - Piling

 <Our major project - Piling>

Bored piling is popular to be used in construction as a foundation to carry on the heavy 

vertical load from buildings, industrial complexes, bridges, and infrastructures etc by 

transferring the structure loading into the subsoil.

It offers the most economical foundation as they can be constructed in a wide choice of 

diameters, typically ranging from 500 mm to 2500 mm, and to depths of up to 95m.

Bored piles can provide a solid foundation elements suitable for almost all site 

conditions.

  

   Bored Pile is a cast-in-place concrete pile where the bored piles have to be cast on 

construction site, while other concrete piles like Spun Pile and reinforced concrete 

Square pile are precast concrete pile which they're cast in the factory. 

> Construction Method introduction 

a) Formation of Bored Hole by Earth drilling Rigs

Bored piling is a process whereby steel circular casings are installed into the ground by 

the simultaneous process of drilling and soil. This is then followed by the concreting of 

the piles. which then forms a strong pile foundation for the structure. This process is 

usually required when when soil replacement instead of soil displacement is required. 

Sambo E&C owns various types of boring rigs and is able to construct bored pile to 

maximum 3.0 m diameter and depth to maximum 95 m from ground level. 

b) Formation of Bored hole by Reverse circulation Drilling method

The RCD system, also referred to as air-lift drilling, is well known as a robust and 

uncomplicated sys-tem that is highly efficient for large diameters and depth onshore and 

offshore. The reverse circulation drilling method executed by RCD machine is used in 

pre-driling work. 

> Main advantage 

1. piles of various lengths can be extended through soft soils into suitable 

bearing material.

2. Large excavations and subsequent backfill are eliminated

3. Very little influence to the adjacent foundation, buildings and structures.

4. Adjacent soil is not disturbed or remolded. 

5. Absence of vibration will not disturb adjacent piles or structures. For many 

design situations bored piles offer higher capacities with potentially better

economics than drive piles. 

<Umm Shaif(U.A.E - Abu Dhabi)>

*Construction period: 02, 2008 ~ 12. 2008

* Client: ADMA - OPCO

* Main Contractor: Hyundai industry

* construction feature: Grouting (For Jack installation)/drilling