2.2. Guidelines for High Number of Blows in Non-Cohesive Sand

Try these first

1. 1.

   What hammer type would be used for a concrete pile in stiff soil?

   Hint

   Think about what minimizes driving stresses.

2. 2.

   How is soil categorized in pile driving?

   Hint

   Look at the definition of cohesive and non-cohesive soils.

3. 3.

   What hammer is generally preferred for concrete piles?

   • Double acting hammer
   • Single acting hammer
   • Vibratory hammer

   Hint

   Think about the strength of concrete and hammer impact.

4. 4.

   True or False: Double acting hammers are preferred for driving concrete piles.

   • True
   • False

   Hint

   Remember the guidelines for concrete materials.

5. 5.

   You are on a construction site that has shifted from medium non-cohesive sand to dense sandy clay. Explain your hammer selection process.

   Hint

   Consider soil density changes and the required striking energy.

6. 6.

   Given a scenario where environmental regulations require reduced noise levels, describe an alternative approach to pile driving.

   Hint

   Think about quieter methods available for piling.