1313 14th Street, NW
Washington, DC –
22,600 GSF renovation and addition for a new, 4-level mixed-use residential and retail building. The project included a 4th floor addition to an existing 3-story rowhouse, a new rooftop terrace, and partial basement levels beneath the existing rowhouses. Underpinning of the existing party walls expands the size of the existing basement levels.
Client: Douglas Development
Architect: Hickok Cole Architects
Photo Credit: David Meaux Photography
Sandbreak Overlook Residence
South Bethany, DE —
4,800 SF, 3-level beachfront home inspired by sand break fencing, with precise spacing that gives the façade a wavelike effect. The thoughtfully designed sawtooth roof is framed with engineered lumber to maintain a thin roof profile. The steel moment frames span across the floor-to-ceiling windows to maximize ocean views and help brace the structure against lateral loads. A 1st floor exterior deck cantilevers 17 feet overlooking the beach dune, with viewing balconies on the 2nd and 3rd floors. The foundation system is comprised of circular steel piles and the structure is designed to withstand expected loads for flood hazard zone VE and category D wind exposure.
The project is the recipient of the Annapolis Home Magazine Excellence in Design Award (Merit in Residential Architecture); Home & Design, Design Excellence Award (Architecture Grand Award); AIA Chesapeake Excellence in Design (Merit Award Residential); NKBA Baltimore Chapter (First Place Medium Bath); Builder’s Choice Award (Mentioned in Bathroom Category) and AIA Potomac Valley (Merit Award).
Architect: Donald Lococo Architects
Image Credit: Anice Hoachlander
E30 House
Amenia, NY —
On occasion, we have the privilege to work on a project where the architectural design jumps off the page. This custom home, designed by partner WC RALSTON ARCHITECTS, is one of these projects. The private residence is currently under construction in upstate New York. The large, soaring cantilevered roof lines and glass box interior with its minimal wall locations was a real challenge to design. The fireboxes became the main lateral and gravity carrying elements for the house, which also has a full story of unbalanced soil loads.
Client: WC Ralston Architects
Rendering Credit: WC Ralston Architects
Shenandoah House
Bluemont, VA –
This three-level, single-family home is built into a steep hill using 20-foot retaining walls, a balcony that cantilevers 14-feet from the foundation walls, and 8-foot cantilevered roof eaves. Composite steel floors and floor-to-ceiling glass windows with invisible sills frame the view beyond the floating fireplace. A custom-designed, circular staircase leads to the subterranean, indoor pool. A substantial terrace with an infinity pool and hot tub extends the living space outdoors.
Client: RAAD Studio
E50 House
Amenia, New York —
We are providing structural engineering services for the construction of this 7,669 GSF, three-level, single-family residence that features an open stair tower that extends 45-feet to the roof. The house footprint requires that it be pushed 15-feet into the hillside.
Client: WC Ralston Architects
Vapor House
Bethesda, MD –
7,000 square-foot, new single-family house, replacing the original structure that was destroyed by a felled tree. The project included an L-shaped main house designed using expanses of precisely engineered steel trusses with full-story glass panels. Glass boxes cantilever out at various heights to create a courtyard effect. Fixed glass, retractable windows and doors overlook a terrace and adjacent pool pavilion. Recipient of the 2018 Washington Chapter of the American Institute of Architects (AIA|DC) and 2020 International Architecture Awards.
Client: David Jameson, FAIA
Photo Credit: Paul Warchol Photography
Wildcat Mountain Residence
Fauquier County, VA –
15,000 square-foot, three-level single-family house with an 11,000 square-foot guest house and a 3,000 square-foot detached pool house. The main living level of the house has glazing all around the exterior perimeter and a sloped trapezoidal central core that provides the lateral force resistance through the center of the house. One end of the main house cantilevers 16-feet beyond the perimeter of the foundation walls. Cantilevered retaining walls up to 12-feet in height were required due to the steep grades present on the site. Recipient of the 2020 Washington Architectural Foundation (WAF) and the American Institute of Architects (AIA|DC) and 2020 International Architecture Awards.
Client: David Jameson, FAIA
Photo Credit: Paul Warchol Photography
Graticule House
Great Falls, VA -
6,500 square-foot addition to a three-level, single-family house with large, glazed walls and two-story open floor areas. A 12-foot section of cantilevered floor was provided at one end of the house using an external steel truss and a braced steel frame. Stacked, mullion-less windows required steel plates to support out-of-plane wind loads along the two-story spaces.
Client: David Jameson, FAIA
Broad Street House
Bethesda, MD -
6,300 square-foot three-level single family house with a linked carport. The entry has a cantilevered, sloped roof and the faux masonry chimney and light well extend above the center of the roofline. Unique framing was required to maintain vertical support for the glass windows that wrap around one corner of the house. A custom-built, cranked interior steel stair utilizes bent channels and 2x2 HSS shapes.
Client: Cunningham+Quill Architects
Tridelphia House
Ellicott City, MD -
12,000 square-foot, three-level, single-family house and a 1,000 square-foot detached garage. The main living space is elliptical in shape with a cantilevered roof structure and canopies around the perimeter. The project required a wall structure for the indoor pool and two outdoor terraces feature low retaining walls to visually extend the living space.
Client: Cunningham+Quill Architects
Archlaw House
Clifton, MD -
5,000 square-foot, three-level addition to an existing single-family house. Underpinning, 15-feet in height, was provided at the corner of the existing garage and custom-fabricated, exposed roof trusses incorporated LVL collar ties. Large, open rooms and flush ceiling planes are achieved using built-up HSS shapes with continuous steel angles for joist support. HSS 5x5 moment frames were used to create a cantilevered balcony off the side of the house.
Client: Richard Williams, Architect
Hawks Nest
Falling Waters, WV -
2,000 square-foot, two-story house with two simple, cast concrete volumes rise seamlessly from the limestone to create a perch for the steel and glass structure. A grid of steel columns with cantilevered balconies create framed views and blur the line between inside and outside. The site is an abandoned limestone quarry with expansive views of the Potomac River.
Client: Wiedemann Architects
Black + White House
Bethesda, MD –
Structural design and construction administration services were provided for a 5,500 SF addition to a three level single family house having large glazed walls and two story open floor areas. The residence was steel framed due to the tall glass towers that were utilized at the upper floor levels. Lateral stability was achieved by fixed welded connections between the columns and beams at various locations in the structure.
Client: David Jameson, FAIA
Jig Saw House
Bethesda, MD –
Structural design and construction administration services were provided for a 4,500 SF addition to a three level single family house. A central courtyard was provided at the interior of the house. A the library and living rooms two-story spaces were provided requiring a customized wall design utilizing PSL posts. A 5-foot wide cantilevered canopy was provided at the entrance to the house.
Client: David Jameson, FAIA
Caldor Rd. Residence
McLean, VA –
Structural design and construction administration services were provided for a 4,500 SF, carbon neutral, three level single family house. SIPS wall panels were used for the exterior walls and roof construction. Pre-insulated Superior wall concrete panels having an R value of 12.5 were used for the exterior foundation walls. These panels utilize 70% less concrete than a conventional poured in place wall system. Geothermal heating and cooling systems were used in the house.
Client: Cunningham + Quill Architects
Tea House
Bethesda, MD –
Structural design and construction administration services were provided for a 12-foot x 16-foot tea house suspended of two rigid steel frames. A cantilevered concrete pier was provided beneath the main floor structure invisible to exterior which braced the tea house from out-of-plane wind loads. Two diamond shaped steel roof trusses were used to suspend the floor structure at the four corners of the floor. Duct work was closely coordinated around the steel framed floor structure to minimize the total depth of the floor assembly.
Client: David Jameson, FAIA
Catch and Release House
Bluemont, VA –
6,000 SF three-level, single-family house with a 2,000 GSF detached pool house and garage. The main living area is composed of a steel framed, glass enclosed structure with an 8-foot cantilevered roof on 2-sides of the room. Full height, two-story conditions at several interior spaces required specialized wall designs for the increased wall heights.
Client: Cunningham + Quill Architects
Passive House
NW Washington, DC —
New, high performance, 3,650 square-foof three-story, detached house designed to the PHIUS+ 2015 standard for energy efficiency. With an array of 36, 360-watt photovoltaic panels, the house is modeled to be net-zero energy for the planned occupancy. The house has five bedrooms, a one-bedroom apartment and a terrace with permeable pavers.
Architect: Robin McGrew AIA, CPHC, Architect and Certified Passive House Consultant
Builder: Allen Built Inc., Certified Passive House Builder.
OSLO House
Washington, DC –
Structural design services were provided for a four-level 12,500 GSF residential multi-family building having cantilevered bays at the front and rear façades. An elevated 400 GSF concrete walkway was provide over the basement areaway at one side of the building. Underpinning was required at each party wall location and around the perimeter of the existing building to accommodate a new below grade basement level. The existing masonry foundation walls at front half of the existing building were retained for conformance with zoning requirements. A 1st floor level concrete podium slab was provided to transfer the stair and elevator core above the basement level apartments.
Client: DEP Design
Photo Credit: David Meaux Photography
515 N Washington Street
Washington, DC –
New, 9-unit, 4-level residential building with a footprint of 2,750 GSF per floor and cantilevered balconies for each unit. A 1,000 GSF loft level with adjacent, private roof terraces at the 4th level. A wood-framed podium level on the first-floor level separates the apartments from the garage level.
Client: CAS Riegler
1345 K Street, NW
Washington, DC –
New, 36-unit, 5-level residential building with a footprint of 5,800 GSF per floor and cantilevered balconies for each unit. A 3,500 GSF penthouse level with adjacent private roof terraces and a community deck are provided at the 5th floor level. The existing steep grade was utilized to create an entire occupied basement floor, and a podium slab provides separation between the apartments and a mechanical room.
Client: Nelson Architects