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5 cards from this section. Quick, good the night before a test.
What is the purpose of cushioning material in pile driving?
Think about what happens when high impact forces strike a concrete pile.
Name a common material used for cushioning piles.
It should be thick enough to handle the stress.
What is the main purpose of using cushioning material in pile driving?
Consider the stresses that affect precast piles.
True or False: A heavier hammer with a high drop height increases the risk of damaging a concrete pile.
Think about how the impact of the hammer affects the pile.
Design a precast pile installation plan considering the soil type and pile characteristics. Identify the appropriate cushioning material and its dimensions.
Analyze local soil reports to determine valid conditions.
Using the Engineering News formula, if a hammer weighs 600 lbs and drives the pile with an average penetration of 3 inches (convert this to feet). Calculate the safe load assuming height of free fall is 5 feet.
Don't forget to convert all measurements into consistent units!
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