Preventative maintenance is a solution used to prevent further deterioration of a parking lot. It is also the most cost-effective solution to maximize pavement life while minimizing risk. As soon as a pavement first shows signs of wear and tear such as raveling, transverse cracks, longitudinal cracks, or minor block cracking, it is in need of preventative maintenance. Parking lot maintenance includes corrective measures such as crack sealing, sealcoating, and asphalt patching/repair. Effective preventative maintenance is an ongoing process that needs regular monitoring to ensure that rehabilitation strategies are producing predicted results.
Drain Repair & Installation
Many times, the concrete ring that supports the storm drain from underneath the drain will crack and break up into pieces. Once this occurs, excessive water will wash away supporting gravel underneath the asphalt. When this happens, the area of asphalt around the storm drain will sink along with the drain. Typically, for something like this, the concrete ring will need to be replaced, along with the washed away gravel and sunken asphalt.
The first step in repairing a drain is to sawcut a square line in the pavement around the perimeter of the drain. Normally this would extend 2 feet beyond the edge of the drain in all directions. The material around the drain would be excavated and removed from the site. The casting would be removed so as to assess the damage to the structure.
If the damage is too severe, it may be necessary to remove the existing structure and install a pre-cast concrete box. In either situation, it is important to repair any connecting pipes and permanently seal the connections to the structure. The steel casting is then set on the structure and the area is backfilled. After the material is properly compacted the asphalt is applied as outlined in the full depth repair procedure.