Practice Guidelines For Soft And Medium Cohesive Soil (2.5) - Introduction to Pile Hammer Selection

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6 sample questions

Question 1.
What type of hammer is recommended for concrete piles?
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Think about how to minimize stresses.
Question 2.
What is the main difference between cohesive and non-cohesive soils?
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Consider how each type behaves when wet.
3Question 3.
What type of hammer is best for very loose sands?
- Single Acting
- Double Acting
- Vibratory
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Think about the rapid blow rate of hammers.
4Question 4.
True or False: Heavier hammers are necessary for soft soils.
- True
- False
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Consider the soil's ability to absorb blow energy.
Question 5.
Given a pile made of concrete in a very stiff cohesive soil, what hammer type would you select and why?
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Consider how the hammer type will affect the stress on the concrete.
Question 6.
If you need to drive a steel H-pile in medium non-cohesive soil, describe the hammer selection process using U.S. guidelines.
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Recall the classification table provided in the U.S. guidelines.

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