3.1. Soil Type and Associated Blow Energy

Try these first

1. 1.

   What type of hammer is recommended for concrete piles?

   Hint

   Think about reducing driving stresses.

2. 2.

   What is the primary distinction between cohesive and non-cohesive soils?

   Hint

   Consider how they behave when wet.

3. 3.

   What is the recommended type of hammer for very loose sand conditions?

   • Single-acting hammer
   • Double-acting hammer
   • Vibratory hammer

   Hint

   Consider which hammer is best for soft, loose conditions.

4. 4.

   True or False: Single-acting hammers are more effective in tough soil conditions compared to double-acting hammers.

   • True
   • False

   Hint

   Recall the energy requirements in tough conditions.

5. 5.

   You need to drive a 12-foot long steel pile into dense non-cohesive sand. Calculate the blow energy required if your hammer weighs 1500 kg and the fall height is 3 meters.

   Hint

   Remember your formula for blow energy.

6. 6.

   Describe a scenario where the choice of hammer must be changed due to environmental factors in a construction project involving sensitive community areas.

   Hint

   Consider construction near hospitals or residential areas.