Element 12420, Parklawn Drive

Major adaptive reuse renovation of an existing, 1960’s era, four-story, steel-frame industrial office building.  Key components of the project’s retrofit program included removal and replacement of the existing skin on all sides of the building, resulting in a modern, industrial loft aesthetic.  A new large shaft on all floors was cut, after installation of new steel framing supports, for a relocated existing stair and in-fill slabs were designed and poured at the old stair shaft location.

A two-story atrium space was also created, complete with a dramatic monumental stair.  Supports for new energy-efficient rooftop HVAC equipment were designed and installed.  A new mechanical shaft opening was framed and cut into all floors and the old shafts were filled in.  Various load evaluations of the existing structure were performed for all necessary modifications.  A lateral load analysis for wind and seismic loads was performed to check compliance with current building codes.  Knee braces were added from the top of columns to the underside of girders at all columns to provided needed lateral stability.

Sophisticated software and analysis techniques were used to achieve maximum structural capacity and therefore provide economical solutions.  Cantilevered retaining walls were designed and constructed to enhance the site engineering.  The renovated building was leased to the Food and Drug Administration and was awarded LEED-CS Gold certification.  The project received the 2010 Award of Excellence for Best Suburban Renovation from NAIOP Maryland/DC.