They should anchor the perimeter of the fabric with soil, rocks, or pins during the first lift of aggregate placement. A tracked bulldozer is the best machine to prepare and spread the aggregate. Aggregate lift thickness should be at least six inches. If the fabric is damaged during installation the damaged area should be patched with a new piece. Crews should compact the aggregate according to project specifications.
Final compaction is done with a vibratory compactor.
The operator makes several passes without vibration, and then with full vibration. As with any construction project, monitoring is necessary. If rutting in the aggregate layer is observed, for example, then design specifications might have to be changed. Before placement of the geotextile, it had impassable, muddy conditions with ruts up to one foot deep. Today, the conditions are as good as just after the fabric was placed.