When bedding sand is spread during installation, what is its primary purpose before final compaction and jointing?

When bedding sand is spread during installation, what is its primary purpose before final compaction and jointing?

• A. To provide a uniform seating bed for pavers and aid alignment.
• B. To waterproof the subgrade.
• C. To provide decorative color.
• D. To increase surface friction for traction.

Answer: (A)

The bedding sand’s main role is to create a uniform seating bed for the pavers and help with alignment during installation. This layer smooths out minor irregularities in the prepared base so each paver can rest evenly, making it easier to level and line up the entire run. It also acts as a cushion during initial compaction, protecting edges and allowing small adjustments without gouging the base. After seating and compaction, joints are filled with jointing material to lock the system. Bedding sand isn’t intended to waterproof the subgrade, add color, or increase surface friction.

The bedding sand’s main role is to create a uniform seating bed for the pavers and help with alignment during installation. This layer smooths out minor irregularities in the prepared base so each paver can rest evenly, making it easier to level and line up the entire run. It also acts as a cushion during initial compaction, protecting edges and allowing small adjustments without gouging the base. After seating and compaction, joints are filled with jointing material to lock the system. Bedding sand isn’t intended to waterproof the subgrade, add color, or increase surface friction.