Title: Determine the difference in elevation between two or more points using a level/grade rod.
Course: Agricultural Structural Systems (18403) > Section: Demonstrating Land Measurement and Building-Site Evaluation

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?
- How would you establish 90-degree corners on a building foundation, using a level or transit?