6.1. Introduction to Cranes and Lifting Equipment

Try these first

1. 1.

   What type of hammer is typically preferred for concrete piles?

   Hint

   Think about which hammer reduces stress on the concrete.

2. 2.

   What does blow energy depend on?

   Hint

   Which two factors are multiplied together?

3. 3.

   What type of hammer should generally be used for concrete piles?

   • Drop Hammer
   • Double Acting Hammer
   • Single Acting Hammer

   Hint

   It’s the type that manages stress on the concrete.

4. 4.

   True or False: A double-acting hammer is suitable for driving concrete piles.

   • True
   • False

   Hint

   Think about the consequences of excessive force.

5. 5.

   Imagine a site has a mixture of loose and stiff sand. What would your approach to hammer selection be for both types, and why?

   Hint

   Consider the properties of loose versus stiff sands.

6. 6.

   Given the need to penetrate a particularly tough clay while ensuring minimal stress on a concrete pile, outline the best hammer choice and justify it.

   Hint

   Think about the relationship between hammer weight and the kind of soil.