Practice Quiz

Home Inspection

Category - Building Science

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It is not unusual for foundations to become compromised because the surrounding soil has insufficient grading. Which of the following is the BEST grade allowance?
  1. No more than ½" per foot for three feet
  2. No more than ¾" per foot for four feet
  3. At least 2" per foot for five feet
  4. At least 1" per foot for six feet
Explanation
Answer: D - It is not unusual for foundations to become compromised because the grading of surrounding soil is not sufficient. The best grade allowance is at least 1" per foot for six feet. This prevents water from accumulating near the base of the structure. It also makes it harder for insect infestations to develop. An appropriate grade can help maintain the structural integrity of a house or garage.
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