In 1993, the Benjamin Rush Center, a mental health facility in Philadelphia, had completely outgrown a very tired 40-year-old, 11,000 square foot counseling center. The primary challenge of the project was to design a facility large enough to meet the needs of the rapidly expanding services being provided.  The secondary challenge was to expand the facility in manner that permitted the center to remain open during the construction.The work included the complete renovation of the existing building and the construction of the new 12,000 square-foot office building with a panelized exterior wall system.  The new addition was built in front of the original, allowing Benjamin Rush to present a new image to the public.  The new addition and the existing renovated building were connected by a beautifully landscaped open courtyard, which served as a safe and controlled environment for the patients.