Hardscape & GradingQuestion 51 of 100
Aggregate base under hardscape is best compacted in what manner?
a.In one thick lift with no compaction
b.Only after the pavers are placed
c.In thin lifts (layers), each compacted before the next
d.By soaking it with water only
Explanation
Base material should be placed and compacted in thin lifts, commonly around 3 to 4 inches, so the compactor can achieve full density throughout. Compacting one thick lift leaves the lower portion loose, causing later settlement. Layered compaction produces a stable, uniform base.
Practice all 100 questions free — no signup required.
Related questions on this topic
- Finished grade around a building should slope away from the foundation at approximately what minimum for the first several feet?
- A French drain is BEST described as what?
- Before placing concrete pavers on a driveway, a compacted aggregate base is installed mainly to do what?
- A segmental retaining wall over a certain height typically requires what to prevent failure?
- Weep holes or a drainage system behind a retaining wall serve what purpose?
- A slope is described as 4:1. What does this mean?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-27 Landscaping Trade Exam · How we review