Annapolis, MD View Map
The project included providing a new pervious driveway to a historic home in Annapolis, Maryland. The Randall-Bordel house is an 18th century Historic Home located on a 1.25 acre lot in the heart of downtown Annapolis. This very unique parcel of land is nestled inside a city block adjacent to the State Circle in the historic center.
The previous driveway had been partially paved with asphalt and was an assortment of asphalt, gravel, dirt and some concrete into the garages. The driveway also adjoins a brick patio towards the main house and leads into a small apartment in the ‘garage’.
The first and biggest challenge was dealing with the historic nature of the site. This site needed permits from the historical society to ensure it met their stringent aesthetic standards for this very traditional historic city. The second and equally significant challenge was physical access. Access to the worksite was via a very narrow alley that leads into a narrow city street.
The third challenge was protecting the full depth basements on either side of the alley from tire loads of dump and concrete trucks. As per any project of this type, there were many other challenges that were addressed without issues.
After extensive research, Deborah Schwab from Schwab Landscape Architects believed pervious concrete to be the best option. Hyde Concrete was quickly referred for their technical expertise in both pervious and decorative concrete. After surveying the job, Hyde Concrete made several design and project recommendations to streamline the work and incorporate some architectural elements to satisfy the permitting authorities.
The final design of the driveway was 6” of pervious over 6” of #57 stone. The driveway apron and garage entrances were done in a colored concrete with an exposed aggregate finish. Additional brick walls, walks (using recycled bricks) and landscaping was incorporated to round out the design that was approved by the city. After careful measuring, it was ascertained that trucks could fit down the alley and into the street if street parking was removed and some trees trimmed. Finally, to ensure the structural integrity of the basements on the alley, large steel plates were placed to distribute the load from the trucks.
Why is this project important for Green Construction?
As mentioned above, Annapolis is a small, historic city on the shores of the Chesapeake Bay. Receiving permission to install a new pervious concrete driveway in the city center was a feat that sets the standard and sends a clear message that proper environmental stewardship is necessary in the design of our future projects. Secondly, through effective communications and planning, even very challenging sites can benefit from the advances of green construction methods that impact our everyday lives. This is a small, seemingly un-glamorous job, but it marks a significant turning point in the use of green construction in historic residential projects.
Owner - Joe Budge, Annapolis, MD
Architect/Designer - Schwab Landscape Design, Annapolis, MD
Concrete Contractor - Hyde Concrete, Annapolis, MD
Concrete Producer - Chaney Concrete, Waldorf, MD