Before paving 29 stalls at an industrial building on South Service Road in Plainview, Nassau County, we had to work underground. Our team at Royal Pavement Solutions installed a 12-foot-deep precast drywell, built 5,160 square feet of new pavement, and tied it into the existing lot.
Making Room for the Drywell and New Parking
A landscaper removed 3,300 square feet of grass and soil to roughly 20 inches deep, plus 305 feet of old concrete curb, six inches wide and 18 inches deep. We removed another 1,860 square feet of asphalt and base to 10.5 inches.
Those areas formed the new footprint. The removals involved hauling 61 cubic yards of soil and 16 cubic yards of asphalt ripout.
Replacing grass with asphalt changes where rain goes. As the EPA explains, conventional pavement reduces infiltration and increases runoff. We installed a standalone precast drywell, 10 feet in diameter and 12 feet deep, without a pipe connection to another drain.
We wrapped it in geotextile filter fabric to help keep soil out of the aggregate. Clean gravel and sand backfill extended 3 feet along the sides, 6 feet underneath, and 2 feet on top. It included a 24-inch chimney and an 8-inch traffic-rated slab.
Excavating and setting the drywell took a full day, with the drive lane closed during the work.
Concrete Curbs and Utility Adjustments
We installed 336 feet of new concrete curb, including straight runs and a rounded island. The specified 4,000 PSI concrete had single-rebar reinforcement and a broom finish, with 12 inches below grade and a 6-inch reveal.
We also lowered a Nassau County sewer cleanout about 6 to 8 inches to the new grade and reset four manhole collars with new cast-iron frames and covers.
Building the New Pavement
We placed 6 inches of compacted R2 recycled concrete aggregate as the base, with 120 cubic yards listed in the scope. Then we laid 4.5 inches of compacted asphalt in two lifts: three inches of Type 3 binder (96 tons reported), followed by 1.5 inches of Type 6 top course (48 tons).
The binder supports the top course, which takes traffic and weather. This was new pavement intended for truck traffic at an industrial property, not a thin overlay.
We had a ten-person crew for asphalt paving. Equipment included a Weiler 385C paver with automated grade control, a Wirtgen W150 milling machine, and 1.5-, 3-, and 10-ton rollers.
Tying Into the Existing Lot
To bring the new pavement flush with the old, we milled 6,100 square feet of existing asphalt 1.5 inches deep and resurfaced it with 57 tons of Type 6 asphalt.
Tack coat was specified at 0.05 gallons per square yard to help the new asphalt bond to the milled surface.
We also completed 6 separate patches totaling 75 square feet, with 82 feet of sawcut perimeter.
Marking the Finished Layout
We blacked out roughly 180 feet of old striping. The new layout included 29 stalls and a yellow hatched zone with 86 feet of four-inch-wide line.
Need More Parking at Your Commercial Property?
Planning to add commercial parking? Contact our team for an estimate on new pavement, drainage, curbing, and tie-in work.
