Practice question

For a simple slope in Type C soil 20 feet deep or less, OSHA's maximum allowable slope is:

  1. 1/2 horizontal to 1 vertical (63 degrees)
  2. 3/4 horizontal to 1 vertical (53 degrees)
  3. 1 horizontal to 1 vertical (45 degrees)
  4. 1-1/2 horizontal to 1 vertical (34 degrees)

Answer: D — 1-1/2 horizontal to 1 vertical (34 degrees)

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