Curbing is used to differentiate parking areas from roadways, sidewalks, and landscaping, and to control the flow of water from the parking area to the storm drain system.
Cracked Concrete Curbing |
Curbing Issues
Curbing issues that arise are usually associated with height considerations – either too high of a reveal, which causes tripping hazards to pedestrian traffic, or too low of a depressed area, which eliminates the effectiveness of the curbing. Curbing is especially important along the edges of parking spaces adjacent to fences, walls, other structures, and landscaping.
Proper reveal is usually about 6” high and 6” wide, depending on the application (i.e., roadways versus parking lots). Curbing position is usually at least 24” from the parking space end to prevent vehicles from overhanging past the property line or hitting structures behind the parking space.
Sidewalk curbing faulting |
There are three main types of curbing: asphalt berm, poured-in-place concrete (or cast-in-place), and pre-cast concrete. Asphalt berm and poured in place concrete are installed during construction or repair of the parking area, while pre-cast concrete must be placed into the base or subgrade of the parking surface. Poured-in-place curbing type is usually poured at least 6” deep in the base; pre-cast concrete curbing usually has similar heights so that installation for a 6” reveal will leave 6” below the parking surface as well.
Fresh Granite Curbing |
Remedy
Asphalt berm and pound-in-place concrete curbing are installed in the same way, with a machine that pours and places the material along a straight path or in a curved area. Removal and replacement of these types of curb consists of cutting broken areas and re-pouring new material in its place to match the existing. This is done to achieve the appropriate reveal (at least 6”), with concrete being poured to at least a 6” depth as well.
Pre-cast concrete curbing must be excavated and removed. New pre-cast concrete pieces are installed to allow at least a 6” reveal and at least a 6” depth below the surface.
If you are experiencing Pavement Marking Issues, ask for a Free Pavement Analysis from U.S. Paving & U.S. Sealcoat and put our 20+ years of professional experience to work for you.
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