Planting & Soil第 40 / 100 题
Rough grading followed by finish grading before planting is done primarily to accomplish what?
a.Increase soil compaction for planting
b.Remove all topsoil from the site
c.Create low spots that hold water
d.Establish proper surface drainage and a smooth planting surface
解析
Grading shapes the soil surface so water drains away from structures and toward intended outlets, and finish grading creates a smooth, even bed for planting or turf. Poor grading causes ponding, erosion, and drainage complaints. Positive slope away from buildings is a core goal.
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