Retail

Situated along Washington DC’s Southwest Waterfront, the Wharf Parcels 6&7 also known as 670 Maine and 680 Maine, consist of two 11-story, Class “A” office buildings (480,000 sf), which are part of the phase two development at the Wharf DC.  The office buildings consist of concrete framing with a post-tensioned concrete slab over a two-level underground garage extending under multiple towers.  

The hybrid foundation system is comprised of multiple foundation solutions, spanning over the Washington Metropolitan Area Transit Authority’s (WMATA) green line metro tunnel.  The transfer mat over the tunnel with rigid anchor and drilled displacement piles create an innovative solution to control the settlement.  Also, vibration isolation was included to eliminate any vibration and noise for the tenants. 

To create a maximum unobstructed interior space within the buildings, columns were spaced up to 42 feet and 15 feet cantilevered slabs all around the perimeter of floor plates guaranteed open and continuous views through the sophisticated curtainwall and glazing system.  An innovative shallow 81 feet concrete post-tensioned bridge connecting the two buildings with an oculus in the middle created a dramatic view while the interior open space with the bridge was used as the continuation of the office space.  

Situated at the top of the up-and-coming Union Market District, in Northeast, Washington, DC, 440 Penn is a new 13-story, 305,230 sf residential building featuring 23,000 sf of ground floor retail and three levels of below grade parking (80,000 sf). The building is surrounded by historic low-rise buildings providing unobstructed views of both the Washington Capital and Monument.  In addition, it was critical to the neighborhood and zoning requirements to respect the history of the area while bringing it into the future.

The design team was tasked with maintaining the building’s exterior character and provide a seamless integration of the new residential building on the west side while not disturbing the current tenant on the east side.  To maintain this seamless integration, the two-story existing historic façade was to remain and incorporated with the new building. The existing façade had to be temporarily supported during construction to allow for the new building to be constructed behind it.  

Press House Warehouse is a new mixed-use complex located in Northeast, Washington, DC and surrounded by several urban amenity-rich neighborhoods such as Union Market, NOMA, and Shaw.  The 462,511 sf building features the historic retrofit and renovation of the existing building at 301 N Street, NE, a warehouse designed in 1931 for the National Capital Press.  The historic press building is a three-story building consisting of two levels of conventionally reinforced, two-way concrete slabs, with the roof comprising of a series of steel monitor trusses spanning between girders supported on built-up steel columns.  

The repurposed building is also used for office and ground level retail, while rental units were added between two new high-rise structures over two levels of below-grade parking.  Hickok Cole Architects currently occupy office space at the 2nd and 3rd floors of the newly renovated historic building.  SK&A served as the engineer of record for their office fit-out, which included cutting an additional large opening for an interconnecting stair.   

Located in the Capitol Riverfront’s Ballpark District, 1000 South Capitol Street is a 13-story, 350,000 square foot U-shaped residential building with 244 apartments, 14,000 sf of retail space, and a 225 space below-grade garage.  The rooftop features a resort-style deck with an infinity-edge pool, cabanas, and lush landscaping.  Additional amenities include a fitness studio, wine bar, courtyard gardens, podcast studio, screening room, billiards room, and pet spa.

A structure of architectural beauty and engineering excellence, the building features dramatically angled floor-to-ceiling windows, a landscaped terrace over the rear portico, and numerous cantilevered balconies.  The building design utilized an undrained (bathtub) basement, supported by auger cast pile foundations, and hydrostatic slabs with integral pile caps.

Situated on “The Hill,” Fairfax County’s highest elevation, and in walking distance to the Greensboro Metro station on the Silver Line of the Washington area’s subway system, The Boro is a new, mixed-use, transit-oriented, urban-style community within Tysons, VA.  Totaling 4.25 million square feet on 18.1 acres, the development integrates a mix of residential, office, retail, and entertainment buildings along with 4.23 acres of community green spaces.   

SK&A provided structural engineering services for a two-level upscale, luxury movie theater, and a new 20-story class “A” office tower.  The Showplace Icon theater (94,800 sf) includes 14 state-of-the-art screens and upscale dining options.  The Boro Tower (345,000 sf) includes ground level retail (8,260 sf) and five levels of below grade parking for 1,200 spaces.  The building also features a glass curtain wall and up to 10-foot ceiling heights.    

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.

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.

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.

Located in the Dulles Town Center development, this new apartment community consists of five types of residential apartment buildings, totaling 433 one to three bedroom units.  The apartment buildings, 18 in total, is spread out over a 19.4-acre parcel located to the southeast of the Dulles Town Center shopping mall.  The phased construction of the structures includes four-story wood-framed buildings, two types of three-story, wood-framed carriage homes, and four one-story retail buildings.

The project’s construction also included retaining walls at the stormwater management pond.  SK&A provided structural engineering services and served as the Special Inspections Engineer-of-Record. 

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.