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www.trentonpaving.com | Frequently Asked Questions > Why chamfered edges on drive?

The 45 degree chamfer crafted on the sides of the pavement not only gives the drive a 'tailored' edge, but serves as a water barrier.  When the aggregate foundation is being packed, a shallow channel is purposely dug along each edge of the aggregate surface.  When paving, the Hot Mix Asphalt is carefully lapped down and into this channel, and later hand-tamped.  The resulting chamfered edge that extends several inches into the surrounding soil prevents run-off water from undercutting and eroding the aggregate base from beneath the asphalt surface, thereby precluding collapse.

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