Chapter 3 Flashcards
1
Q
Types of displacement piles
A
- Bakau and tanalised pile
- Precast concrete pile
- Pre-stressed concrete pile
- Steel piles (H-section)
2
Q
Types of replacement piles
A
- Percussion bored pile
- Rotary bored pile
- Micropile
3
Q
Advantage of displacement piles
A
Quality and workmanship can be controlled
4
Q
Disadvantages of displacement piles
A
- Difficulty in transporting the complete length of piles especially through congested streets
- Driving process generates unacceptable noise and vibration
- Difficult to manoeuvre the long piles around urban area
5
Q
Advantages of replacement piles
A
- Strata of soil can be explored and examined before construction
- No difficulty in transporting
- Lesser noise and vibration level
6
Q
Disadvantage of replacement piles
A
Replacement piles are cast-in-situ and therefore more difficult to construct and control
7
Q
Factors determining the choice of piles
A
- Soil condition
- Loadings
- Differential statement
8
Q
Equipment for driven piles construction
A
- Pile driver
- Percussion
- Vibratory
- Hydraulic
- The mandrel
9
Q
Installation of sheet piles
A
Driving in panels
10
Q
Advantages of franki driven Cast-in-situ piles
A
- Often a very economical system
- Extensive range of pile sizes
- Excellent load/deflection performance
11
Q
Equipment for bored piles construction
A
- Kelly bar
- Turntable
- Auger
12
Q
Members of pile frame
A
- Leader
- Sill
- Winch
13
Q
Reasons of pile load testing
A
- To obtain back-figured soil data
- To confirm pile lengths
- To verify structural soundness of the pile
14
Q
Methods of pile load testing
A
- Constant rate of penetration
- Maintained increment load test
15
Q
Describe function of pile cap
A
Distributes load from the column to the piles
