The Tower Building @ Tower Oaks

A 10-story office tower located alongside the I-270 “Tech” corridor in Maryland.  Situated on 12 acres of the larger 200-acre Tower Oaks mixed-use development site, the award-winning landmark office building encompasses 275,000 sf of office space and was adapted to the General Service Administration’s (GSA) Federal Office Building Standards for occupancy by Health and Human Services.  A post-tensioned concrete building, the project also features a separate three-level, 300,000 sf parking structure for 780 cars.  

The building was originally conceived in 1998, prior to the development of the U.S. Green Building Council’s (USGBC) LEED standards.  In 2001, the project received the City of Rockville’s first ever Environmental Excellence Award for Corporate Leadership in Green Building and later received LEED Silver certification in 2009.  The project was also awarded the National Association of Industrial and Office Park’s (NAIOP) Award for Excellence in the “Suburban Office” category in 2003.  The building was highlighted in David Gissen’s book entitled, “Big & Green” and was featured in a National Building Museum’s exhibit on sustainable architecture.

Pike & Rose (White Flint Metro)

Built on top of the former Mid-Pike Plaza commercial site, this 28-acre urban mixed-use development is located off of Rockville Pike near to the White Flint metro.  At full build-out will include 3.4 million sf of construction, comprised of high-rise, mid-rise, low-rise, and podium structures designed by three separate architectural firms to promote distinctive designs and architectural styles.

The complex features: 1.1 million sf of office space, 1.7 million sf of residential, a 90,000 sf hotel, 430,000 sf of retail and 4,000 parking spaces.  Project phasing is programmed into twelve blocks starting with Phase 1 that features 150,000 sf of retail, an iPic theater, 490 residential units and 80,000 sf of office.

Garanti Bank Headquarters / Olive Grove Towers

Located in Istanbul, Turkey, the Olive Grove Towers is a 30-story modernist designed, high-rise building of glass and reinforced concrete that houses the Garanti Bank headquarters.

The distinctive semi-circular architecture of the building is eye-catching to the passerby, both day and night.  The building features 20 office levels, eight parking levels, and two levels of retail/lobby space.  The structure was designed as a reinforced concrete frame with shear walls to resist severe earthquake forces.

North Gate at Falls Church

Located near the East Falls Church Metro station off of Route 29, this project is an urban-style, mixed-use development with four levels of luxury apartments, office space and ten 3-story townhouses supported by a second floor concrete plaza deck over ground floor parking and retail.  Below-grade are two levels of parking.

The upper construction is wood-framed and the plaza, retail spaces and parking are supported by reinforced concrete.  The project has three floors of infinity framing at the three-story office tower. Both the office and residential buildings have green roofs with AC condenser farms.  The project is slated for LEED certification.

Liberty Center North Complex (Ballston Metro Station)

Mixed-use residential/commercial complex, consisting of two office buildings, two residential buildings, street level retail space, and underground parking for 1,988 cars, located at Wilson Boulevard and Quincy Street.

One Liberty Center is a 13-story, 316,000 sf office building and is 100% leased to federal government tenants.  The building is designed to meet GSA ATFP standards and is Energy Star Certified.  The Two Liberty Center office building is a nine-story, 177,000 sf office building featuring two-way post-tensioned flat plate construction with a column-free floor plan.

The development’s high-rise residential components are a 21-story apartment building (280,000 sf) with 11,000 sf of retail, and a 20-story (290,600 sf) condominium building with 9,000 sf street-level retail.  An impressive landscaped/hardscaped plaza serves the entire complex.  The entire development is served by five levels of below-grade parking totaling 750,000 sf.

Gum Spring Library

A four-story, mixed-use building with a two-level library occupying the first and second floors and two office floors above the library.  The library's first floor contains meeting rooms, circulation, a/v supplies and a children's area.

The second floor features a teen area, media and study areas, books and periodicals, quiet rooms and other seating areas.  Composite steel construction was used in conjunction with reinforced CMU stair towers to efficiently resist lateral loads.

Engine Co. 13 and Hyatt Place Hotel, 400 E Street, SW

A 12-story, contemporary, mixed-use building that incorporates a new fire station, a 214-key Hyatt Place hotel, as well as community and retail spaces.  The fire station (22,000 sf) occupies a partial mezzanine on the 2nd floor as well as the 3rd floor, with both floors connected via an internal stairwell.  The building also has three levels of underground parking under the fire station.  

Located in Washington, DC’s southwest quadrant, just north of the Southwest Freeway, the building features separate street addresses and entrances for the hotel and fire station.  The Hyatt Place’s lobby and parking entrances is located on the 400 block of E Street SW and the fire station’s entrance and apparatus bays is located on the 500 block of 4th Street SW.

The hotel features a state-of-the-art media center, fitness centers, a coffee and wine bar, and a rooftop pool with veranda and bar.  The apparatus bays of the station include radiant-heated floors. 

The project is slated for LEED-NC Silver certification featuring a green roof space on the third floor and rooftop level.

Columbia Center, 1152 15th Street, NW

Located on 15th Street between L and M Streets, NW, Columbia Center is a 12-story, Class “A”office building with 8’4” ceilings and a 40-foot high, glass lobby with sloping steel support columns.  The horizontal and vertically-angled glass curtain wall building totals 415,000 sf of above-grade structure with four levels of below-grade parking totaling 106,000 sf.

To capture additional square footage, the southern end of the building is cantilevered over the adjacent alley, starting from the fourth floor.  The building shares air rights over the alley below with the adjacent Washington Post building.

The project was recognized by Maryland/DC NAIOP with its Award of Merit for Best Urban Office over 150,000 sf as well as awards from the DC, Potomac Valley and Northern Virginia AIA chapters.

CityCenter DC (CCDC)

Under a joint teaming arrangement with another structural firm, SK&A provided engineering services for the residential portion of this major urban public/private mixed-use development built on the old convention center site in downtown DC (near the Metro Center subway station). The site of the full project covers 10 acres and includes two office buildings (300,000 sf); four 10/12-story residential buildings (772 units); and 275,000 sf of retail space, all over a common, structured underground garage for 1,900 cars.  SK&A provided structural engineering services from conceptual design through construction administration services for the residential building portions of the project.

The four residential buildings are divided into two apartment towers versus two condominium towers.  One of the apartment towers (located on Parcel 3, facing New York Avenue) has a unique 10-story cantilevered feature, suspending several units over a walkway below.

The newly re-opened and re-aligned 10th and I corridors are constructed over a public parking garage.  At the corner of New York Avenue and 11th Street, a new public plaza/park, lined with restaurants, will be used for public events.  The project incorporates multiple sustainable design features and has received a Gold LEED Neighborhood Development (LEED-ND) certification from the U.S. Green Building Council.

300 New Jersey Avenue (Jones Day Headquarters)

A 10-story office building with six levels of underground parking for 458 cars. The project includes a glass canopy-covered atrium space flanked by two existing buildings (c. 1935 and 1953) and a new office wing. The new office floors have large column-free bays (42’x30’) with 11-inch thick post-tensioned concrete slabs.

The atrium canopy is supported by a segmentally-curved steel truss at the center and by adjacent buildings at the edges. The steel “tree” structure in the middle of the atrium acts as the backbone for the canopy support system, which also supports the atrium's glass elevator, seven levels of elevator lobbies and the connecting pedestrian bridges. The 100’ high x 42’ wide glass wall at the east side of atrium is hung from the 10th floor of the new building with stainless steel cables. All exposed steel members and connections conform to AESS.

The project is LEED Gold certified and was featured as the cover story in Civil Engineering magazine's May 2010 issue. The project also won the 2010 Award of Excellence for Best Urban Office over 150,000 SF from NAIOP Maryland/DC Chapter as well as the 2010 Outstanding Project Award for New Buildings $10-$50 Million from the Structural Engineers Association of Metropolitan Washington.