How does FDOT specify surface tolerances for finished concrete?

• A. Surface finish tolerances per project specs for flatness, levelness, and texture; inspector compares to plan.
• B. Only vertical alignment matters.
• C. Only color uniformity matters.
• D. Only compressive strength matters.

Answer: (A)

FDOT specifies finished concrete surface tolerances in the project specifications and plans, covering three aspects: flatness, levelness, and texture. The inspector’s job is to compare the actual finished surface to the plan’s requirements, using standard measurement methods for each aspect (for example, checks over defined lengths to assess flatness and levelness, and a texture assessment to ensure the pattern and depth meet the spec). This ensures the surface will ride smoothly, drain properly, and present the required appearance. Choices that focus only on vertical alignment, color uniformity, or compressive strength miss the essential finish criteria defined for the surface of the concrete, which is why the correct approach is to specify and verify flatness, levelness, and texture against the plan.