Bustamante Engineers Case Study: Goshen Commons Paving Project

Goshen Commons Paving Project

The BUSTAMANTE ENGINEERS project we are highlighting this month involved the asphalt milling and overlay of all internal roadways and parking areas within the residential condominium community, pavement line striping, inlet top replacement, curbing and flatwork replacements, downspout tie-ins to stormwater roadway inlets, and the installation of concrete dumpster pads.

Downspout Tie-in 

The internal building downspouts were outletting along the curbline of the parking areas located in front of the condominium buildings. This was considered a safety concern because it allowed water to pond on the pavement surface and could lead to freezing and icy conditions in the winter months.

Stormwater System Tie-in

We decided the best course of action was to tie these downspouts into the internal roadway stormwater system to avoid stormwater runoff on the surface of the roads.

Dumpster Pad

There was a total of seven concrete dumpster pads installed throughout the community. Two of the dumpster pads were extended to allow for the dump trucks to have access for removal. Control joints were placed in the concrete sections to account for the freeze/thaw cycle and to avoid major concrete cracking.

Curbing, Sidewalk & Inlet Top Replacements 

Prior to construction, the contractor and engineer completed a walkthrough inspection to mark out locations where concrete replacements were necessary. This included concrete curbing, sidewalks, and stormwater inlet tops. These replacements should be completed prior to paving the new pavement surface to avoid heavy machinery driving on the new pavement surface.

Milling of Pavement 

Once all of the downspout tie ins and concrete replacement work was completed, the milling of the pavement surface was ready to begin. The milling of the roadway consisted of removing the surface course layer of pavement which consisted of 2” of asphalt.

Full Depth Restoration

After the roadways were milled, an inspection was completed to determine locations of poor base locations of the pavement. Typical signs of base failure include large cracks, and areas of settlement. These locations were saw cut and the pavement was removed down to the base layer of stone. Then the stone was compacted thoroughly, more stone was added if necessary. The binder course layer of pavement is paved prior to the surface course being applied.

Overlay

Once all of the full depth restoration locations have been addressed. The roadways are ready to be paved. The surface course layer of pavement consists of 2” of 9.5mm HMA Superpave. Once the pavement is placed, rollers and hand tampers are used to compact the asphalt that is placed.