Bored Pile
CIP is a bored cast-in-situ pile by using soil drilling method and installing steel casing throughout the pile length which can be prevented erosion of soil layer around the hole. Therefore, the installation procedures will be uncomplicated and fast. It is commonly used in the following areas:
- Projects that are required foundation to support large-scale structures
- Areas that are not convenient for pile driving
- Areas that are required reducing soil pressure problems from the replacement of piles
- Areas that are avoided noise and vibration pollution form pile driving
C.I.P Specification
- Pile diameter 40 – 100 cm.
- Pile depth 8 – 30 m.
- Excavation by using soil drilling method and installing steel casing throughout the pile length
Advantages of C.I.P
- Reduce damage to building around construction area due to soil movement
- Reduce noise pollution compared to the driving method
- Free vibration drilling
- Use to replace in the area driving pile method is not suitable
- Boring of soft layers, sand and gravel layers and the deposit strata are possible by using steel casing
Installation Comparison Table
| Dry process | C.I.P Full casing | Wet process | |
|---|---|---|---|
| Prevent the erosion of the Soil layer surrounding the hole | Depend on soil property | Full casing | Bentonite |
| Prevent the permeate of groundwater at the bored end | Depend on soil property | Use water to prevent the permeate of groundwater at the bored end | Use bentonite to prevent the permeate of groundwater at the |
| Cleanliness of the construction area due to installation | Depend on soil type | Depend on soil type | Soil mix Bentonite |
| Complicate of work | Not complicate | Not complicate | Complicate |
PORTFOLIOS
Bored Pile
Interchange Highway Route No.9
High speed train Bangkok – Korat Contract 4-7
High-speed train Thai-China contract 2-1