Parking Garage

The Foundry, 200 Stovall Street

Built in the 1970’s, 200 Stovall was your typical 13-story, cast-in-place, conventionally reinforced, office building with a bland metal panel exterior skin and an interior forest of columns spaced 20’-0” on center.  Succumbed by the lackluster office market, the building was converted into a high-class residential tower (810,000 sf), fitting 525 residential units and 236 parking spaces with minimal demolition, foundation work, or column removal.

Using structural steel, an additional four floors were added to the existing concrete-framed building.  The vertical addition increased the lateral load on the existing concrete moment framed structure.  Vertical concrete shear walls and steel moment framed were post-installed at the lower floors to resist these additional lateral loads.  New openings in the second, third, and fourth floors were required for a new parking ramp.  To reduce weight, structural steel was used for the framing of these elements.  To modernize the exterior, the existing office-style metal panel façade was removed and replaced with a precast concrete panelized system with thin-set brick. 

West Half Street

Situated directly across from the new Washington Nationals Stadium, West Half Street is a 13-story residential building featuring a modern, high-end, canti-levered design with gradually alternating and descending outdoor terraces.  The building includes 465 apartments in studio, one- and two-bedroom layouts, 61,000 sf of retail on two floors, and multiple amenities such as a rooftop pool, penthouse lounge areas/clubrooms, and a central courtyard.  The aboveground structure sits atop a three-story underground garage with 329 parking spaces.  

The building was designed to be the crown jewel of the surrounding development area providing residents with unobstructed views of the baseball stadium and surrounding Navy Yard waterfront neighborhood.  SK&A worked with the architect to design a building that continuously rotated and twisted which allowed for these views.  To support the large cantilevers from the building face, Y-branch columns with tie-beams were utilized.  Strategically placed concrete shear walls resist the building’s natural tendency to twist and rotate under its own self-weight.  The Y-branch columns were also designed to support the ends of the ever-increasing cantilevers.

The completed design culminated into a graceful, functional, and exceptional residential structure that adds to the diverse architectural fabric of the Navy Yard waterfront neighborhood.  The building’s new residents will enjoy prime views of game-day action with personalized experiences of the surrounding ballpark atmosphere.

  

 

800 Maine, The Wharf Parcel 3A

Part of a 3.3 million sf mixed-use development situated along Washington DC’s Southwest Waterfront, The Wharf Parcel 3A also known as 800 Maine, is an 11-story, 233,000 sf Class “A” office building.  The office building is constructed atop a shared two-level underground garage occupying the entire project site.  The superstructure and underground garage are concrete-frame with conventionally reinforced floor slabs, reinforced concrete columns (typically 30-ft. apart), concrete shear walls, and select post-tensioned concrete components.

The building is also located in a section of the site where WMATA’s Yellow Line metro tunnel and air intake shaft conflict with the western side of the building’s columns and foundations.  To bridge over the existing WMATA structures, a solution was executed using underground concrete transfer girders over the tunnel and a two-story elevated steel truss between levels 2 to 4, which spans 90 feet. 

The SK&A team’s structural ingenuity and close collaboration with the owner, architect, and design builder ultimately delivered a visually appealing and structurally sound building, with WMATA’s structures intact and operational during construction.

Woodbury Park, 2220 Fairfax Drive

Two nine-story residential buildings with underground parking.  One building contains 108 rental units, and the other building has 99 condominium units.  There is a canopy structure between the two buildings at street-level, serving a common drop-off area.  Structured parking is provided for 303 cars in three underground levels.  Gross floor area of residential construction is 270,900 sf including lobby-level office, community and retail space.  Gross floor area of parking is approximately 121,500 sf.

SK&A provided structural design services as well as testing and inspection services for the condominium building. The superstructure for the building consists of conventionally reinforced, cast-in-place concrete, with masonry brick veneer.

Palisades of Towson

An 18-story, luxury apartment building, The Palisades of Towson features studio, one and two-bedroom units as well as multiple amenities, such as a heated rooftop pool with sundeck, outdoor fireplace with seating area and state-of-the-art fitness center. The high-rise building also includes two levels of parking below grade. 

The building’s substructure and superstructure consist of cast-in-place concrete footings and walls with conventionally reinforced slabs in the garage, and post-tensioned slabs in the tower.

SK&A provided structural design services and a variety of structural inspection and testing services, including inspections of reinforcing steel, post-tensioned steel, formwork, shoring and reshoring, and concrete placement as well as concrete laboratory testing and monitoring of concrete quality.

Arundel Town Center

Located in Hanover, MD on the Baltimore-Washington Corridor, the Arundel Town Center is a component of the Arundel Preserve, a 268 acre, smart-growth mixed-use community within the larger 1,100 acre Arundel Mills development. Developed in multiple phases, the project includes a hotel, residential and retail structures.

The hotel phase of this project involved the construction of a seven-story above-grade, 150-room hotel building that included retail space at the ground floor level.  The building’s substructure and superstructure consist of cast-in-place concrete footings and walls with conventionally reinforced slabs and post-tensioned slabs in the tower.

The residential phase of the project involved the construction of a multi-family residential structure consisting of five to six levels, as well as three stories of retail space with an attached five level parking garage. The project also includes a clubhouse with a swimming pool in the courtyard.  The building’s substructure and superstructure consist of cast-in-place concrete footings and walls with Hambro system floor joist slabs and the precast concrete parking structure.

The parking garage phase of this project involved the construction of a seven-level above-grade cast-in-place concrete parking structure, consisting of footings, columns and walls with post-tensioned reinforced slabs.

SK&A provided structrual design services as well as testing and inspection services including concrete, masonry, and structural steel construction, EIFS observations, field testing, and visual weld inspections.

Constitution Square

Located at First and M Streets, NE, in the vibrant NoMa neighborhood, Constitution Square is a 3.1 million-square-foot, multi-phased, urban mixed-use complex featuring multiple office, residential, hotel, and retail buildings. SK&A was selected to provide structural engineering services for the Class “A”office buildings, Three Constitution Square (OB3) and Four Constitution Square (OB4), as well as Residential Building Two (RB2), a 13-story apartment building.  SK&A also provided special inspection services for construction of a 12-story office building (OB3) over a two-level parking garage.  The construction of the building is a conventionally reinforced slab in the substructure and post-tensioned reinforced slabs in the superstructure levels above. 

Special inspection services were also provided for construction of a 13-story residential building (RB2) over a three-level below grade parking garage.  The substructure of the building (mat foundation, foundation walls, slabs, and columns) consists of conventionally reinforced concrete and the superstructure consists of post-tensioned reinforced concrete slabs above grade.

Palisades at Arundel Preserve

A luxury apartment high-rise, The Palisades at Arundel Preserve is a LEED Silver Certified building featuring studio, one- and two-bedroom units. Located within the Arundel Mills development along the Baltimore-Washington corridor, the apartment community offers multiple amenities to its residents, such as a 24-hour fitness center, lounge, library and outdoor patio areas with kitchens, a fireplace, and pool. 

The building has 15 stories above grade with a mechanical penthouse over a four-level parking garage. The construction of the building is a conventionally reinforced slab in the substructure and post-tensioned reinforced slabs in the superstructure levels above.

SK&A provided structural design services and a host of structural inspection and testing services, including inspections of reinforcing steel, post-tensioned steel, formwork, shoring and reshoring, and concrete placement as well as concrete laboratory testing and monitoring of concrete quality.  

North Bethesda Market East

The tallest tower in Montgomery County, MD, the Market East apartment building is a luxury residential community located on the northeast quadrant of the 1.2 million square-foot North Bethesda Market mixed-use development.  The 24-story building features 189 studio, one-, two-, and three-bedroom units with floor-to-ceiling windows and sweeping views of Maryland, Virginia and Washington, DC. 

The high-rise tower shares multiple amenities with a sister low-rise apartment community, including two swimming pools, a state-of-the-art fitness center, resident lounge, rooftop courtyard with outdoor living spaces and fire pit, and 200,000 sf of on-site retail surrounding the central plaza.

The building's substructure is conventionally reinforced cast-in-place concrete and the superstructure is a combination of conventionally reinforced cast-in-place concrete at Level 1; and post-tensioned reinforced cast-in-place concrete from Level 2 through Level 24.

SK&A provided structural design services and a variety of structural inspection and testing services, including inspections of reinforcing steel, post-tensioned steel, formwork, shoring and reshoring, and concrete placement as well as concrete laboratory testing and monitoring of concrete quality.  Additional specialty services included ground penetrating radar and core drilling tests.

Flats 8300, 8300 Wisconsin Avenue

SK&A provided structrual engineering services for the Flats 8300, a nine-story, 714,000 sf mixed use building with 359 residential units, a two-level Harris Teeter grocery store, and four levels of below grade parking.  Building amenities include a rooftop swimming pool with space for entertaining, a clubroom, a fireside lounge, a fitness center, and a business center.

SK&A's scope of services also included various inspections of the earthwork/foundations, structural concrete, masonry, structural steel, cold-formed metal framing, fireproofing, and waterproofing as well as post-installed anchor testing and inspection.  The project is slated for LEED Silver certification.

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