Residential Building Inspector B1General Administration, Legal, and EnforcementEasy
A residential building inspector is reviewing the definitions section of the 2021 IRC. The inspector needs to clarify the precise meaning of 'Grade' as it relates to construction. According to the IRC, what does 'Grade' refer to?
- AThe finished surface of the ground, paving, or sidewalk adjoining the building.
- BThe quality or classification of lumber or other building materials.
- CThe slope of a roof or drainage system.
- DThe level at which a building foundation is set below the frost line.
Show answer & explanationAnswer & explanation
Correct answer: A. The finished surface of the ground, paving, or sidewalk adjoining the building.
In the context of the International Residential Code (IRC), 'Grade' specifically refers to the finished ground level around a building, which is critical for drainage and foundation protection.
Why the other options are wrong
- B. This refers to 'grade' in a materials context, not the IRC definition for ground level.
- C. This refers to 'slope' or 'pitch', not 'grade' as defined in the IRC.
- D. This refers to 'footing depth' or 'foundation depth', not 'grade'.
IRC Definition: Grade
As defined in the 2021 International Residential Code (IRC), 'Grade' means the finished surface of the ground, paving, or sidewalk adjoining the building, critical for ensuring proper drainage away from the structure.
- Finished surface of ground.
- Adjoining the building.
- Important for drainage.
Memory trick: Grade is the ground where the building is found.