SC Landscape Contractor Practice Questions - South Carolina Commercial Landscape Contractor License Exam

What is the proper installation method for a segmental retaining wall in South Carolina's clay soils?

Stack blocks directly on clay soil Excavate below the surface, install compacted aggregate leveling pad, set base course below grade, backfill with drainage stone, and install drain pipe behind the wall Use mortar between all blocks No drainage is needed behind retaining walls in South Carolina

Correct Answer:

Excavate below the surface, install compacted aggregate leveling pad, set base course below grade, backfill with drainage stone, and install drain pipe behind the wall

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