What does “grade tolerance” refer to?

What does “grade tolerance” refer to?

• A. The maximum size of the equipment allowed on site.
• B. The speed limit for earthmoving equipment.
• C. The minimum depth of driven piles.
• D. The allowable deviation from the specified finished grade.

Answer: (D)

Grade tolerance is the allowable deviation from the specified finished grade. In earthmoving, the finished grade is what the design calls for in elevation and slope, and the tolerance sets how far the actual surface may vary while still meeting requirements. This ensures proper drainage, compaction, and surface quality. For example, if the plan requires a certain grade with a specific slope, the tolerance tells you how much elevation or slope variance is acceptable before rework is needed. This concept is not about equipment size, speed, or pile depth, which are covered by other specifications.

Grade tolerance is the allowable deviation from the specified finished grade. In earthmoving, the finished grade is what the design calls for in elevation and slope, and the tolerance sets how far the actual surface may vary while still meeting requirements. This ensures proper drainage, compaction, and surface quality. For example, if the plan requires a certain grade with a specific slope, the tolerance tells you how much elevation or slope variance is acceptable before rework is needed. This concept is not about equipment size, speed, or pile depth, which are covered by other specifications.