What is the uppermost layer of an ICPS?

What is the uppermost layer of an ICPS?

• A. Base (compacted aggregate)
• B. Sub-base (compacted)
• C. Pavers w/ joint sand
• D. Edge restraint

Answer: (C)

The finished surface you walk on is the uppermost layer: the pavers with the joint sand in between. The pavers sit on a bedding sand layer, which rests on the base (and sub-base as needed) below. The edge restraint runs around the perimeter to keep everything in place. So while the other components provide support and boundary, the top layer you actually see and use is the paver surface with joint sand filling the gaps.

The finished surface you walk on is the uppermost layer: the pavers with the joint sand in between. The pavers sit on a bedding sand layer, which rests on the base (and sub-base as needed) below. The edge restraint runs around the perimeter to keep everything in place. So while the other components provide support and boundary, the top layer you actually see and use is the paver surface with joint sand filling the gaps.