Determination should include calculating the difference between two or more rod readings.
Process/Skill Questions:
- How are elevation differences calculated?
- What unit of measurement is used for elevation?
- Why are elevation differences important for agricultural building construction?
- What does the difference in rod readings indicate about the building site?
- Which is used to establish 90-degree corners on a building foundation: a level or transit?
- When would it be appropriate to use a hand level?
- What is the proper procedure for holding a hand level?
- How are the elevation points of a hand level read?
- How are differences between elevation points calculated?
- How does a hand level work, as compared to a mounted level?
- Why is it necessary to know the elevations of different points?