2. Introduction to Pile Hammer Selection
The chapter discusses the selection process for pile hammers based on the type of material used for the pile as well as the soil conditions. It emphasizes the importance of using appropriate hammers for various pile materials, including concrete, steel, and timber, and the influence of soil type on hammer selection, particularly noting guidelines from the U.S. Army Corps of Engineers. Additionally, the chapter covers blow energy requirements related to pile length and weight, and the suitability of different hammer types for specific conditions.
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What we have learnt
- Hammer selection is crucially influenced by both material type and soil conditions.
- Concrete piles typically require heavier hammers to minimize impact stresses.
- Soft soils allow for the use of vibratory hammers, while tough soils favor single acting hammers.
Key Concepts
- -- Pile Hammer Selection
- The process of choosing an appropriate hammer type for driving piles based on materials and soil types.
- -- Blow Energy
- The energy imparted to a pile during driving, which is determined by the hammer's weight and height of fall.
- -- Soil Classification
- Categorizing soil based on its properties, typically through tests like the standard penetration test, affecting hammer choice.
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