What tool is used to establish the final grade and slope on a slab?

• A. A level
• B. A straightedge
• C. A laser level
• D. A screed (hand screed or power screed) establishes final grade and slope

Answer: (D)

The final grade and slope of a slab are established with a screed. As the concrete is placed, the screed—hand or power—acts as the finishing blade that strikes off the surface to the exact elevation and drainage incline required by the forms and grade lines. By pulling the screed across the wet surface, excess material is removed and the surface is brought to the precise contour, setting the correct thickness and slope before other finishing steps begin. Tools like a level or laser level, and a straightedge, are used to check and verify the surface after screed work, ensuring it matches the intended grade, but they don’t shape the final grade themselves.