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4 cards from this section. Quick, good the night before a test.
What is a drop hammer?
Think about gravity's role in this process.
Why is it important to use a pile cushion?
What happens to an object when it is hit without cushioning?
What is the primary function of a drop hammer?
Think about how the hammer moves.
True or False: A single acting hammer uses steam for both upward and downward strokes.
Recall how steam energy is applied in each type of hammer.
During a construction project, a contractor needs to drive a concrete pile weighing 25,000 kg using a single acting hammer. If the best available hammer weighs only 7,500 kg, what should the contractor do?
Review the minimum weight criteria discussed.
If a double acting hammer has a lifting efficiency of 80% and operates 50 blows per minute, how many effective blows can be registered in one hour?
Consider units of time when calculating total output.
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