Hardscape & Grading第 57 / 100 题
Edge restraints installed around a paver patio serve what main purpose?
a.To provide seating
b.To change the paver color
c.To replace the gravel base
d.To keep pavers from shifting and spreading outward over time
解析
Edge restraints lock the perimeter pavers in place so the field of pavers cannot creep or spread apart under traffic. Without them, edges migrate and joints open up, leading to failure. They are a small but essential part of a durable paver installation.
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