1.1. Upward Stroke

Try these first

1. 1.

   What happens to the air in the upper cylinder when the hammer is lifted?

   Hint

   Think about the air's movement when the hammer rises.

2. 2.

   What is the main energy source for the upward stroke?

   Hint

   Consider what powers the mechanism.

3. 3.

   What does the upward stroke in a double acting steam hammer depend on?

   • Air supply to lower cylinder
   • Weight of the hammer
   • Type of soil

   Hint

   Which action initiates the hammer's rise?

4. 4.

   Is it true that the double acting steam hammer is not suitable for heavier concrete piles?

   • True
   • False

   Hint

   Consider the blow rate in context.

5. 5.

   Consider a scenario where a double acting steam hammer is incorrectly employed to drive concrete piles. What mechanical failures could occur, and how might these issues affect the project?

   Hint

   Think about the types of damage that can occur under excessive force contexts.

6. 6.

   Imagine you are consulting on a construction project requiring a double acting steam hammer. Describe the decisions on soil type and hammer choice that you'll consider for optimal performance.

   Hint

   Consider the relationship between soil conditions and hammer action.