Historic
2465 North 50th Street   Bala Building, Suite 10E   Philadelphia, PA  19131   (P) (215) 877-8210   (F) (215) 877-8150
President’s House National Historic Project

    Cost of Construction:  $10 Million

This project is commemorating the site of the executive mansion where Presidents George Washington and John Adams lived and worked by constructing a permanent outdoor structure that does not require heating/cooling or staffing.  The project is located at 6th and Market Streets in Philadelphia and will connect to the Liberty Bell Pavilion.  ADCON was selected by the Project Architect on behalf of the City of Philadelphia Department of Public Property and the National Park Service to perform the civil engineering and design services, including drawings and specifications.  Due to the historic nature of the project,  ADCON reviewed the archaeological and geotechnical information for the site in order to be able to protect the existing underground 18th & 19th century archaeological remnants during construction as well as to provide proper drainage throughout the site.











City of Philadelphia Bellair Manor Stair Restoration Project

The Bellair Manor is one of the oldest buildings in Philadelphia, located near the intersection of 20th St. and Pattison Ave, has historic significance.  ADCON performed the investigation of the structural state of the staircase located at Bellair Manor.  The central staircase in the manor was in poor condition and tilted inward.  ADCON inspected the internal structure of the stair, and prepared the engineering design drawings and specifications for the stair restoration.










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