3. Study Deep foundations video #1 and take notes on your Reader. Watch Deep foundations video #2 and answer the following questions: a.Based on observation, what would you say the width of each concrete pile is? Length? b. What is the approximate hammer frequency at minute 5:00? Express your answer in Hertz. С.Based on your answer for (a), determine the weight of one of the piles. Express your answer in kN.

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