Grade (Civil)

Definition

A predetermined degree of slope that a finished floor or ramped surface should have. The horizontal ground level of a building or structure, often referred to as an existing condition or a modified or proposed final condition.

Purpose

In civil engineering, grading ensures proper drainage, stability, and accessibility of surfaces, aligning them with design specifications for functionality and safety.

Examples of Use

• Road Construction: Determining the slope of roads for safe vehicle operation and drainage.
• Building Sites: Setting the ground level for foundations and ensuring proper water runoff.
• Landscaping: Creating slopes for aesthetic appeal and functional drainage in gardens and parks.

Related Terms

• Elevation: The height above a given level, especially sea level.
• Slope: The inclined surface of a ground or structure.
• Contour Lines: Lines on a map representing elevation levels.

Notes

Accurate grading is crucial for preventing water accumulation and ensuring the stability of structures. It involves precise calculations and often requires heavy machinery to achieve the desired results.