19. Precast Piles: Length and Testing
The chapter provides an in-depth exploration of various types of piling methods such as precast concrete piles, cast in situ piles, steel piles, and composite piles. It emphasizes the necessity of prior investigation and testing to ascertain the required pile lengths and load-bearing capacities along with discussing the advantages and disadvantages of each piling type. Key considerations in selecting the appropriate pile type are highlighted along with insights on associated equipment and techniques for pile driving operations.
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2.1Quality Control In Precast Piles
The section discusses the necessity of quality control and investigation...
What we have learnt
- Prior pile testing is crucial for determining pile length and load-bearing capacity.
- Different pile types, including precast, cast in situ, and steel piles have unique advantages and disadvantages.
- Pre-stressing methods are employed to enhance load-bearing capacity and resistance to handling stresses.
Key Concepts
- -- Precast Concrete Piles
- Piles made in a factory under controlled conditions, leading to better quality and faster production.
- -- Prestressing
- A method of introducing internal stresses in concrete to counteract external loads, thus increasing load-bearing capacity.
- -- Bentonite Slurry
- A material used during piling to stabilize soil and prevent collapse, as well as to flush the borehole during construction.
- -- Blow Efficiency
- The ratio of transmitted energy to the input energy in pile driving operations aiming to maximize productivity.
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