Our preservation approach focuses on maximizing the retention of historic features, materials, finishes, and spaces and the maintenance and repair of the existing historic materials, and retaining the form of the property as it has evolved over the years. Attention is given to historic construction techniques and craftsmanship and sensitivity to sites’ historical significance and architectural detailing.
United States & Canada
Rockville, MD
SWSG provided design services for the demolition of the existing outdoor bathhouse and the construction of a new bathhouse. Phases included schematic design, programming, design development, construction documents, and administration. Design elements included: accessibility for senior citizens and ambulatory disabilities, energy-efficient design elements, low maintenance, bio-rational and energy-efficiency components, lines of sight throughout the building for supervision, safety and risk management and control, facility equipment, and security. Energy-efficient design elements included, low maintenance, bio-rational, and energy-efficient components.
Fairfax, VA
SWSG provided electrical engineering services for three FCPA recreation centers to prepare CDs to convert all existing interior fluorescent lighting to LED lighting and provide lighting controls. Services included verifying existing fixture and switch counts, locations; and construction documents including single line and load calculations for the trade permit. SWSG also provided MEP engineering services for two recreation centers for RTU, ERU and AHU replacements. Construction documents, administration services, and punch list inspections were provided.
Lorton, VA
SWSG has successfully replaced twelve Fairfax County Park Authority bridges, including the Giles Run bridge—a 130’ single-span steel pedestrian bridge across the Giles Run stream. It aligns with the existing trail in Laurel Hill Park’s Greenway Trail system. SWSG prepared CDs for the site work, bridge, and adjacent wing walls. As all construction occurred within the floodplain and Resource Protection Area, complete revegetation of disturbed areas was necessary. Additionally, SWSG conducted a Water Quality Impact Assessment (WQIA) and floodplain study.
Woodbridge, VA
SWSG prepared a facility assessment report on the existing conditions in the mechanical equipment spaces serving the natatorium. AE services were provided for construction documents and administration for the replacement of HVAC equipment. Dectron DHP units were replaced with indoor units in the natatorium. The pool water piping was replaced between Dectron units and heat exchangers. Pumps and heat exchangers were replaced and UV water purification systems were provided.
Denver, CO
SWSG provided AE and CM services and a full-time on-site construction manager for an office build-out whose scope included: pre-design field surveys, test fit, CDs, finishes color boards, bidding and bid analysis, construction administration, and closeout documents. Services included project management, and architectural drawings which included test fit, space planning, floor plans, finishes, and detailing. The MEP design included HVAC systems, plumbing systems, wet-pipe sprinkler work, AC power utility services, power distribution, and fire alarm modifications.
Annandale, VA
SWSG provided mechanical and electrical engineering services to inspect and analyze the existing boiler and chiller systems, and other related MEP systems. Services included thorough field investigations of existing conditions, systems analysis, cost analysis to convert from central heating and cooling to heat pumps, cost estimate for immediate and long term needs, schematic of all buildings, central plant locations, and distribution piping. A comprehensive report incorporated the findings, analysis and cost estimates.
Woodbridge, VA
SWSG provided AE services to review ADA compliance of interior spaces and modify three areas of the housing offices. The design included suite entrance doors, breakroom renovation, new finishes for paint, base, and doors, ADA compliant security access, relocation of network copiers, installation of LED lighting fixtures, HVAC modifications, new carpet, and the creation of a new administration supervisor office. SWSG prepared a concept plan for the scope of work and construction documents. Permitting and construction administration services were also provided.
Fairfax, VA
SWSG provided AE services to implement upgrades to two existing residential buildings to improve their compliance with UFAS. Field surveys were conducted, recommendations and cost estimates presented, and construction documents were prepared for a series of capital upgrades: Parking lots sealed and repainted, accessible kitchen counter & cabinets, replacement of deck and handrails, compliant doors, frames & hardware, interior painting, drywall modifications, fire alarm system & smoke detectors, exterior unit heat pumps, thru-the wall HP, replacement of domestic water piping, kitchen and bathroom equipment purchases, and all fixtures.
Fairfax County, VA
SWSG provided AE services for Physical Needs Assessments (PNA) and energy audits reports which described property and site description, building data and systems, utility companies, projected useful life, physical needs, improvements and marketability, energy conservation, a 20-year schedule of replacement & funds spreadsheet and photos for five apartment complexes. SWSG performed non-destructive physical inspection including a minimum of 10% of individual residential units and 20% of buildings considering a representative floor plan distribution and diversity of units.
Fairfax, VA
SWSG provided AE services for Physical Needs Assessments (PNA) and energy audits for five apartment complexes. The reports included property and site descriptions, building data and systems, utility companies, projected useful life, physical needs, improvements and marketability, energy conservation, a 20-year schedule of replacement & funds spreadsheet and photos. SWSG performed non-destructive physical inspection including a minimum of 10% of individual residential units and 20% of buildings considering a representative floor plan distribution and diversity of units.
Alexandria, VA
Lincolnia is a three-story assisted and independent living facility for senior citizens with an Adult Day Health Care Center and Senior Center. SWSG prepared CDs to renovate the entire facility. The scope of work included a new HVAC system with building automation system, new building generator, lighting level investigation to meet current illumination and energy codes, upgraded fire alarm, elevator controls, and elevator equipment replacement. The scope also included interior design upgrades for architectural finishes: carpet, tile, counter tops, and wall coverings.
Fairfax, VA
SWSG provided AE services for a Conditions and Needs Assessment (CNA) for the Braddock Crossing Group Home called Sojourn House. Sojourn is a two-story building connected with two single-story buildings, on a corner lot with surface paved parking. SWSG identified short- and long-term maintenance needs, consisting of maintenance, repair and replacement work for a 20-year period. The report included building envelopes, structural integrity, interior walls and finishes, mechanical systems, site work, plumbing systems and fixtures, fire protection, life safety systems and accessibility.
Fairfax, VA
Fairfax County Department of Housing and Community Development (DHCD) desired a Conditions and Needs Assessment (CNA) for nine group homes, ranging in size from 1632 SF to 11,414 SF. SWSG provided AE services and identified short-and long-term maintenance needs, repair or replacement work over a 20-year period. The report included recommendations to remedy deficiencies, photographs and cost estimates. The scope covered building envelopes, structural integrity, ceilings, finishes, signage, mechanical systems, site work, parking, walkways, fencing, plumbing & fixtures, fire protection, life safety systems, field tests for airflow, elevators, and accessibility.
Tysons Corner, VA
AE services were provided for the measuring and recording of existing lighting levels for the interior and exterior of five offices and five garage locations. Light-level readings were compiled and high/low median readings were tabulated. A two-volume report was presented and CDs were produced based on report recommendations.
Quantico, VA
SWSG engineers provided cold-formed steel design for the museum at Quantico Marine Corps Base. The building is approximately 48 feet high, with an additional mast feature resembling the Iwo Jima memorial. SWSG designed cold-formed steel framing for the walls that are above ground, the mast, and a 24’-0” deep underground HVAC support system vault.
Washington, DC
The National Air and Space Museum project was a revitalization of a downtown national museum. SWSG provided structural engineering services for cold-formed steel framing. Services included elevation drawings, partial plan layout, wall sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Washington, DC
SWSG provided structural engineering services for exterior cold-formed steel framing for UHPC (precast) panel at the exterior porch steel columns for a new five-story museum. Services included seismic and load calculations. The structural design included the Porch, Corona, Orientation Theater, Oprah Winfrey Theater and escalators.
Rechmond, VA
SWSG provided AE decommissioning services to perform a high scope demolition design for a one-story 20,240 SF communication facility. The scope included site visits to determine the consistency of current site drawings. Critical infrastructure and non-critical demolition designs were prepared. Demolition documents were provided and a construction design for a previous admin area restoration of the original tenant space.
Morrisville, NC
SWSG provided AE decommissioning services for a one-story 21,100 SF to perform a high scope demolition design. The scope included site visits to determine the consistency of current site drawings. Critical infrastructure and non-critical demolition designs were prepared and demolition documents were provided.
Charlotte, NC
SWSG provided AE decommissioning services to perform a high scope demolition design for a one-story 28, 476 SF telecommunications facility. The scope included site visits to determine the consistency of current site drawings. Critical infrastructure and non-critical demolition designs were prepared. Demolition and restoration construction documents were provided.
Woodbridge, VA
Prince William County desired a Master Plan to best utilize the existing assets and forecast future facility requirements for the Woodbridge Senior Center, Woodbridge Library, and Potomac Library. SWSG provided AE services for a Master Plan which presented concepts, recommendations, and action plans to improve service delivery, maximize use of space and minimize facility-related costs. The plan documented and identified requirements for five, ten, and twenty years.
Warrenton, VA
SWSG provided AE services to develop programming and special space needs study for a new facility at three potential locations. Services included providing an evaluation study which included programming, feasibility report, space plans with elevations, and ROM opinion of probable construction cost estimate, and a 3D BIM renderings of the preferred site. SWSG provided full AE services to construct the new facility.
Martinsburg, WV
SWSG provided full AE building design services for CDs for a new maintenance facility and admin/customer service building designed to meet LEED certification requirements. Features included storm water management, reduction of heat island effects and potable water usage, use of high efficiency HVAC equipment, use of energy efficient lighting, and natural day lighting techniques.
Warrenton, VA
SWSG developed BIM conceptual renderings and budget construction estimates to renovate the Board of Supervisors meeting room located inside a historical 1870’s structure. SWSG provided AE services to develop several alternative floor plans of the room for county consideration, including room finishes, egress, accessibility, HVAC, lighting, audio-visual, and structural modifications.
Tampa, FL
SWSG provided architectural and engineering for master plan design services. The scope included project management, 2N electric utility with discrete stand-by power systems, hot aisle containment, infrastructure and A/E concept drawings. The scope of work included field survey, electrical drawings for AC power, mechanical drawings, permit application drawings, common systems coordination, record drawings of new equipment, panel schedule and electrical one-line.
Aurora, CO
SWSG provided AE design services for a mobile switch operation center expansion. SWSG provided project and construction management and administration services. The expanded data center space accommodated 96 new cabinets, two new 2500Va services and two new 3.0 mW generators.
Bellevue, WA
SWSG provided AE and CM services for the renovation of the existing MIU tenant space adjacent to the existing north lab. The program included initial and future data rooms, BTS room, project rooms, fuel vault, AC and UPS power rooms, DC power room, device labs, support areas, and a receiving area. The design included an interstitial roof and exterior steel dunnage platform to support exterior mechanical equipment.
Bothell, WA
SWSG provided architectural-engineering and project management services for the design of the replacement of the existing generators with two (2) 2.0 mW generator units to complete capacity uplift. Services included construction documents and construction management.
Chantilly, VA
SWSG provided AE services to Fairfax County Park Authority to renovate a portion of an existing exercise room into a child care facility. SWSG prepared concept designs having secure entrance foyer, play area, cubbies storage, water fountain, accessible bathroom, storage closet and MEP upgrades to connect existing infrastructure.
Freat Falls, VA
SWSG provided AE services for a new 2,340 SF wood frame building to house equipment and vehicular storage, work areas and a unisex restroom. Services for the new building included BIM-REVIT design, construction documents, budgetary cost estimating and building permit submission.
Lorton, VA
SWSG provided AE services for the design of a new 1200 SF restroom building located within the boundaries of the District of Columbia Correction Facility Historic Overlay and the National Register of Historic Places. The project included schematic drawings, construction drawings, construction administration services, and cost estimates for the planned improvements.
Annandale, VA
SWSG’s design included an expansion with multipurpose room and office and renovation of existing center to meet ADA requirements. Features included renovated existing toilet area, alteration of the existing office with a new reception desk, floor replacement throughout, and additional exterior door. The design relocated the existing pond and added ADA walkways. SWSG provided a LEED Credit Score Sheet.
Herndon, VA
Floris United Methodist Church was building a 22,000 SF three-story addition to their existing building The exterior walls to the addition are framed with cold-formed steel and vinyl siding and stone veneer. SWSG provided structural engineering for cold-formed steel exterior framing. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations. The design included light gage kickers at storefront openings, platform framing, and framing between metal truss outriggers.
Pittsburgh, PA
SWSG provided structural engineering services for cold-formed steel of exterior and interior framing for downtown condominiums of a seven-story structure. Three floors, all framed with load bearing cold-formed steel, were added to an existing four-story building. At the top three floors the load bearing walls framed with cold-formed steel also are designed to be the lateral load resisting framing system. Piatt won Honorable Mention Award for Innovative Design from the Cold-Form Steel Engineers Institute.
Fairfax, VA
SWSG provided structural engineering for cold-formed steel exterior framing of a four-story 65,000 SF addition to the Student Union Building. Services included plan layouts, sections, connections, headers, sills, jamb studs, and calculations. In addition, SWSG provided cold-formed design for exterior framing for walls and non-truss framed roof areas of two seven-story residential northwest housing units.
National Harbor, MD
SWSG provided structural engineering services for cold-formed steel design of a new 80 ft multi-story 28,800 SF casino with exterior and interior building framing assemblies including a theater ramp. At the 2017 Cold-Form Steel Engineers Institute awards ceremony, SWSG received the First Place Award for Design Excellence commercial project Award for our innovative steel design of the new MGM Casino at National Harbor, Maryland.
Pittsburgh, PA
Penguins new Ice Arena exterior walls are framed with cold-formed steel and metal panels and brick. SWSG provided structural engineering for cold-formed steel exterior framing. Additional work included checking existing wall studs for additional signage weight and torque from tube steel outriggers, ATM framing opening details, shaft wall internal bracing details, and glass guardrail details.
Quantico, VA
SWSG provided structural engineering for the cold-formed steel exterior framing for a two-story circular building and 150 foot mast. Additional cold-formed steel framing included HVAC duct enclosure at the foundation wall, framing to support the stone veneer at the interior of the museum, and framing plans sections, details, calculations for curved roof above the elevators at the interior observation tower in the main viewing room.
Baton Rouge, LA
The SE Louisiana Veterans Hospital is a new multi-building hospital campus covering twelve city blocks totaling 29 acres. Buildings for which SWSG provided services include Inpatient, Diagnostic and Treatment, Outpatient, Transitional Living and Rehabilitation, and Central Energy Plant. Total gross square footage of the project is approximately 1.6 million SF. plus an additional 800,000 gsf of parking structure. SWSG provided structural engineering services for exterior cold-formed steel framing for blast loads as well as hurricane wind loads.
Washington, DC
SWSG provided structural engineering services to design exterior cold-formed steel framing for a five-story new museum on Constitution Avenue. Services included a letter with seismic and load combination calculations and future review of non-conforming conditions. Features included the Porch, Corona, Orientation Theater, Oprah Winfrey Theater and escalators.
Washington, DC
The National Air & Space Museum is the fifth most visited museum in the world. The 2018 revitalization project aimed to make it the most visited museum in the world. SWSG’s key role included design of cold-formed steel structural for the noise control ceiling in the IMAX theater, design of CFS load bearing structure in the Planetarium, framing design for various architectural features, and exterior cold-formed steel wall and curtain wall support framing. Services included elevation drawings, partial plan layout, wall sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Washington, DC
SWSG prepared cold-formed steel design and calculations for interior and exterior framing for a new 800,000 SF major league baseball stadium with 50,000 seat capacity. The project included the press box floor system, whirl-pool bath floor systems, suspension design for glass sliders at owner’s suites, and field inspections.
Alexandria, VA
The Tenant House c. 1827, was the completion of the final phase of Huntley. SWSG provided historic preservation services for the exterior restoration and interior adaptive use of the tenant’s house. Architectural engineering services provided construction documents, cost estimates, and selected construction administration services. Changes included in the floor plan, electrical, plumbing, and mechanical systems to comply with code. Civil drawings were provided indicating limits of all proposed disturbances to allow for review by Cultural Resources.
Chantilly, VA
Due to a road entrance closure, the Sully Historic Site required a new entrance drive and parking lot. SWSG prepared site plans to demolish the existing entrance, parking, and service road; create an agricultural interpretive field; provide new site lighting; and add ADA-compliant walking trails.
Luckett, VA
In order to correct damage caused by wood rot in beams and columns, SWSG performed a structural study of the old Luckett’s Schoolhouse, and prepared construction documents for the repair work. Developed in accordance with the Secretary of the Interiors Standards for the Treatment of Historic Properties, the plans detailed the structural repairs, and specified the repair for the three-coat plaster.
Lorton, VA
The Barrett House, used as an officer’s residence at the Occoquan Workhouse, was assessed for its architectural, mechanical, and electrical condition. An appropriate treatment plan was prepared outlining recommendations. Conceptual drawings of the building at different construction phases were prepared.
Fredericksburg, VA
Idlewild, an excellent example of Gothic-revival architecture, was devastated by fire in 2003. SWSG preformed a structural analysis of the ruin, prepared stabilization plans, and managed the stabilization construction. A treatment plan was developed to guide future restoration or adaptive re-use rehabilitation.
Centreville, VA
The Spindle Sears House, a Sears catalog Brentwood model, has retained almost all of the original fixtures, as evidenced by SWSGs comparison of the house to the Sears ‘33/’34 catalog. Original Sears blueprints, obtained from the daughter of the original owner, influenced the design of necessary missing features in the preservation repair.
Manassas, VA
SWSG prepared a feasibility study and schematic design for the rehabilitation of a hollow-tile barn for use as public office space and community use. Code analyses, including ADA, were conducted. The schematic design retains key historical features. A Historic Preservation Certificate Application was prepared. The National Park Service preliminarily determined that the barn meets the National Register criteria.
Manassas, VA
Rehabilitation plans were prepared to adapt the home for museum and office use. Exterior restoration, major structural repairs, foundation and roof repairs, and new mechanical and electrical systems were included in the scope of work. A foundation drain was installed around the perimeter of the house.
Manassas, VA
SWSG prepared a site master plan for the development of parking, trails, and stormwater management. Management zones were established to protect resources: heritage resource protection zone, community resource zone, and entrance zone. Historical research identified areas at the site that have a high potential for archaeological significance. These areas were protected. SWSG conducted a public presentation of the proposed master plan, and solicited public comment.
Leesburg, VA
An intensive-level survey was conducted and recorded with the Virginia Department of Historic Resources. A history of the site was prepared to determine if earlier jails and/or French and Indian forts contribute to the site’s significance. An analysis of the building construction and materials and an archaeological investigation with preservation recommendations were performed.
Bluemont, VA
Located in Bluemont’s historic district, SWSG provided full A/E services to address E.E. Lake’s structural and HVAC equipment deficiencies and provide full accessibility compliance for the renovation. Community and support groups presentations were made. Approvals were obtained from the Virginia Department of Historic Resources, the Loudoun County Historic District Review Committee & Department of Building and Development.
Great Falls, VA
SWSG provided historical A&E services to prepare a Historic Structure Report, treatment plan, and opinion of probable cost. The treatment allowed for office and museum use while emphasizing repairs. A historical finish analysis, an environmental evaluation, and asbestos testing were conducted. Preservation and restoration efforts sought to create an authentic historic experience that supports interpretations for the 1810 – 1935 period of significance.
Oklahoma, OK
SWSG provided construction management services for a design-build project which included the modernization and expansion of cooling and power equipment capacity. The Mobile Switch Office upgraded the commercial power service, replaced an existing generator, built out a power room, added a bulk DC power plant with batteries and performed a cooling audit to address airflow and diffusers.
Pittsburgh, PA
SWSG provided AE design and CM services for an interior renovation project which included all new utility infrastructure, back-up power systems, CRAC units, BMS system, and electrical distribution. The main project included a 1000 SF interior renovation to create a switch area within facility. The project included a new building management system (BMS). SWSG provided full-time on-site construction management.
Bloomfield, CT
SWSG provided AE services for the assessment of the existing site condition, challenges and limitations. SWSG conducted a zoning and ordinance review to identify AHU restrictions including noise, height and use restrictions. A feasibility study, space planning and phase planning documents were prepared to reach ultimate capacity of the facility and the lot. ROM Phase cost estimates were also prepared.
Cleveland, OH
SWSG provided AE & CM services for an office build-out design. The scope of work included pre-design field surveys, construction documents, architectural color board finishes, bidding and bid analysis, construction administration and closeout documents. The architectural design included test fit, space planning, floor plans, finishes, and architectural detailing. The mechanical design included HVAC systems, plumbing systems, and wet-pipe sprinkler. The electrical design included AC power utility services, power distribution, and fire alarm modifications.
Dallas, TX
The Dallas headquarters was a four-phase design/build project converting two individual tenant spaces into a Network Operations Control Center (NOCC). It also included a telecom lab, a data center and 20,300 SF office space. The project involved site surveying, a facility assessment report, design phase, permitting and construction. The converted NOCC space included satellite monitoring stations, 60’ ft’ visual projection system, high-tech conference room, a laboratory, data center, AC and DC power, UPS’s, 500kW stand-by generator, FM-200 and pre-action system, and site security.
United States & Canada
SWSG provided turn-key design and construction management services for 19 calibration earth stations throughout North America. The project included five Canadian sites and fourteen in the USA. SWSG provided site feasibility, construction documents, permitting, field surveying, construction, and commissioning for fast track completion. Construction services included: qualifying bidders, selecting subcontractors, scheduling, conducting progress meetings, monitoring construction, QA inspections, punch list inspections and commissioning.
Construction documents were prepared to construct, install, and test a complete remote site setup including surveillance cameras, microwave and related communications networks, photovoltaic electrical power supply and structures required to deliver data to United States Coast Guard.
Harrisburg, PA
SWSG provided full A/E services for a 12,000 SF sixth floor tenant renovation designed in 16 weeks. Features included installation of six 22-ton computer room air conditioner units, two 5-ton CRAC units, a 20-ton AC unit, a 10-ton AC unit, dry coolers, glycol pumps, 12.47 kV feeder to new 1000kVA substation, double-ended switchgear with two 300kVA UPS, power distribution units, remote power panelboards, two 600KW generators, raised access floor, power and lightning protection.
Kansas City, MO
SWSG provided architectural and mechanical and electrical engineering services for schematic design services for a 42-cabinet equipment deployment. Services included project management to coordinate client design requirements, scheduling of work, HVAC systems and AC power distribution design, ROM estimate and milestone schedule, and weekly design reviews. Design service included infrastructure upgrades needed to support 300 kW of new IT load.
Norton, MA
SWSG provided AE services to prepare CDs for the addition of a 1mW generator and generator switch board, AC power diversification, AC room expansion, HVAC redundancy increase to N+2, and AC power room VESDA and fire protection systems. The CDs also included the design of conduit and wire for security system and Building Management System (BMS). SWSG also provided on-site construction management including systems commissioning.
Charlotte, NC
SWSG provided AE design services for a facility master plan for future expansion, mechanical, electrical and equipment requirements, utility estimates, rooftop platforms, room allocations, equipment placement, and options. Electrical one-line drawings were provided. AE services included concept designs, long lead equipment procurement, and construction documents. SWSG developed a phasing plan which included LEC room expansion, switch room expansion and new switch room build-out in the existing warehouse space.
Charlotte, NC
SWSG provided AE services for site survey and onsite evaluation, engineering design, project management and administrative services for the design of staircase to the roof of a mission critical telecommunication facility. Full construction documents were provided along with project and construction management.
Charlotte, NC
SWSG provided AE/CMAR services for equipment, installation, and commissioning services to upgrade the Center’s utility and standby power system from N+1 to a true 2N which included redundant utility services, generators, retaining wall, and fire protection sprinkler upgrades.
Eagan, MN
SWSG provided turn-key design and construction management services for this multi-phase project to modernize and expand the existing central office. The design included an electrical generator-cooling yard and an A/B CD power plant. The project included all new utility infrastructure, back-up power systems, chilled water HVAC, BMS system, and electrical distribution. The main project included a 3,000 SF interior renovation to create a data center within the existing telephone central office facility. The project included a new chilled water system with the capacity for traditional CRAC cooling as well as high-density cooling in the data center area. The new chillers include free-cooling modes of operation.
Norristown, PA
SWSG provided turn-key design and construction management services for this 6000 SF data center addition. The project included a 6,000 SF building addition including all new architectural requirements, utility infrastructure, N+1 standby power system, chilled water HVAC, BMS system, common systems, grounding upgrades, and electrical distribution. Due to extremely tight sight conditions, the upper level of the addition was designed to house the new generators, chillers, and pumps.
West Sacramento, CA
SWSG provided AE and CM services to expand the MSO. SWSG prepared construction documents and provided a full-time on-site construction manager. Scope included: electric utility transformer, ground level fuel tank yard, 7000 SF switch room expansion, raised floor AC power room, battery room, roof-top platform for multiple 1.5 M generators, chillers, FM-200 fire suppression, Vesda detection systems, ancillary systems, BMS, mechanical equipment, equipment commissioning, and expanded office area with ADA accessibility.
Salt Lake City, UT
SWSG provided the A/E design and a full-time construction manager for a tenant improvement renovation of s shell warehouse space into a new 16,600 SF Mobile Switch Center. This Class-A central office included all new architectural requirements, utility infrastructure, dedicated CRAC system for the data center, HVAC, BMS, FM-200 fire suppression, water & sewer, plumbing, dedicated utility transformer, emergency & interior lighting, AC switch gear, TVSS, voice data, damper controls, computer stations, DC power room, emergency generator, and grounding.
United States & Canada
SWSG performs PM (Preventative Maintenance) and Emergency Services for nineteen Calibration Earth Stations which SWSG previously designed & constructed. These facilities support a geosynchronous communications satellite in north American airspace. They are mission critical and extremely remote, which brings a unique set of challenges that SWSG has supported since the initial deployment of the satellite.
Mobile, AL
SWSG provided turn-key design and CM services for this 20,000 SF Mobile Switch Center build-out inside an existing shell warehouse. Our project manager kept a tight schedule on time. This project included a dedicated CRAC system for the data center, N+1 generators, distributed DC plant, cable racking, grounding, high-density cooling system, power room, secure equipment yard, fiber routes, new electric service, offices, control room, LAN room, loading space, HVAC, building automation system controls, fire suppression systems, main water & sewer services, extensive structural modifications, and plumbing.
Salt Lake City, Utah
SWSG provided turn-key Design and Construction Management services for six cell site expansions. SWSG provided pre-design site visits, A/E drawings for zoning approval, building permit, and landlord approval. Management services were provided for construction, commissioning, and closeout. The cell site equipment consisted of equipment cabinets placed on a platform, mast head amplifiers, MTS and connector for roll-up generator, separate electric service, and sectors each with antenna and lines, microwave dishes, and GPS antenna.
Aurora, CO
SWSG provided AE/CMAR design services converted a 30,000 SF warehouse space into MSO facility. The design included diesel generators, diesel fuel tank, switchgear, emergency power generation, transfer switches, DC power plants, 3M Novec fire protection, and ancillary systems. Site design included electric utility transformers, an outdoor ground level mechanical/electrical yard and grounding. The facility included a 10,000 SF switch room, AC power room, 5,000 SF administration area, and chiller plant with OPTI-Cool high density cooling equipment.
Tampa, FL
SWSG provided AE services for master plan design. The scope included project management, 2N electric utility with discrete standby power systems, and hot aisle containment. The scope of work included field surveys, construction documents, common systems coordination, record drawings of new equipment, panel schedule, and electrical one-line.
Wayne, NJ
SWSG provided architectural-engineering services to convert a control room/administration space into a mission critical space and on-site construction management services. The design included a new control room, administrative space, switch addition, ancillary systems and pre-action system, structural plans, created entrance, raising of lower roof, chiller yard location, and rear storage building HVAC and electrical.
Fairfax, VA
SWSG engineers preformed a structural load analysis of the high-density files at the second floor of the Herrity Building. The analysis considered the loading generated from a 6-tier 4 post high density shelving configuration. A report was prepared that included photographs, existing equipment layout, equipment layout, existing second floor framing, and graphical computer output with calculations.
Rockville, MD
Structural engineers prepared CDs for the foundation and framing included concrete spread footings, structural steel primary framing, open-web steel joist roof framing, masonry interior load-bearing walls, and cold-formed steel exterior walls. In the vaulted ceiling, curved steel beams and hidden steel connector plate details were used to allow a full glass wall to give users the adjacent tree canopy view.
Fairfax, VA
The Herrity parking garage green roof project involved the design of a vegetated roof for the upper-level parking garage. The design incorporated the goals and requirements from the Programming Document developed previously by various departments within Fairfax County for the project. SWSG provided project management, structural engineering, and mechanical engineering to complete the construction documents.
Woodbridge, VA
Prince William County desired to demolish the interior of the office space located above the baseball field concession area, including components of the structure that suffered fire damage. SWSG provided AE services to prepare CDs for new offices, cubicle space, a conference room, toilet room, refreshment counter, and emergency exit stair for a second means of egress.
Chantilly, VA
SWSG has designed eight Fairfax County Park Authority pedestrian bridge replacements. SWSG provided architectural, civil and structural engineering services for a 75’ single span steel bridge, 10’ wide, making a perpendicular crossing of Cub Run Stream. The design provided for an 8’ wide paved pedestrian trail, approximately 1,150 feet long, which extends an existing paved trail to another existing paved trail which are all located inside the resource protection area and the floodplain.
Las Vegas, NV
SWSG provided AE/CM services to expand the existing 12,000 SF into two adjoining suites. The new facility included a switch room with 200 equipment cabinets with infrastructure sized 8KW each and a new cooling system with rooftop condensers. The scope included planning, design, CDs, and CA. The structural design included a Zone 4 seismic roof-top platform, roof access ladder and stair system, common systems seismic supports, equipment footings and foundations, and seismic bracing, including bracing of cable tray systems, and secondary interior roof system capable of supporting the cable trays.
Reston, VA
SWSG provided structural engineering services for the installation design of a 60 ft. single span highway bridge over a pedestrian trail. The design included precast reinforced concrete arches and abutments, reinforced earth retaining walls, precast concrete jersey barriers, and chain link fencing.
Fairfax, VA
SWSG provided AE services for an interior renovation of the raised floor data center space and upgrades to the existing UPS, generator, and HVAC systems at the Fairfax County Government Center Data Center. The third phase required the design of a 10 ft. high x 100 ft. long retaining wall for the new generator. CDs, Minor Site Plan, and CA services were provided.
Bellevue, WA
SWSG provided structural engineering services for the renovation of the existing tenant space adjacent to their existing lab facility. The program included initial and future data rooms, BTS room, project rooms, fuel vault, AC and UPS power rooms, DC power room, device labs, support areas, and a receiving area. SWSG provided a “building-within-a-building” design including an interstitial roof and exterior steel dunnage platform to support exterior mechanical equipment.
SWSG provided structural engineering services for the analysis of proposed antenna foundation for geotechnical stability requirements including bearing capacity, overturning stability and global stability in Georgia. The scope also included on-call construction and foundation recommendations for installation and a multichannel analysis of surface waves to confirm the shear modulus profile at the site.
Eagan, MN
SWSG provided architectural, MEP and structural engineering services to build a building over the existing building. The new roof provided snow load support for the existing inadequate roof. Due to site constraints the new roof also provided an attic mechanical space and roof space for additional mechanical heat rejection equipment. CDs included a 3,000 SF interior renovation to create a data center and a chilled water system.
Fairfax, VA
SWSG provided AE services for the design, construction administration and commissioning for the renovation and upgrade of twelve existing elevators and related machine rooms at the Pennino and Herrity Buildings, and two elevators in the parking garages. The fire alarm system, sprinkler system, smoke and heat detection, lighting, ventilation and security were also upgraded.
Riverside, CA
SWSG provided architectural-engineering services to add dual 4,000 amp battery plants in a switch office facility. The scope included the building space design, the expansion of area floor, four (4) 3Ø / 4W, 480V, 200A circuits, DC power plant, and conduit and wire for new battery system alarms.
Alexandria, VA
SWSG provided AE and PM services to Fairfax Housing Development to separate and modify the original Lincolnia design construction drawings as a separate project. The updated CDs provided tv receptacle height locations, additional light fixture replacements in the first-floor lobby, generator and enclosure, and door-hardware revisions.
fairfax, VA
SWSG provided AE services for upgrading two sets of courthouse escalators. The scope included fire alarm system, sprinkler system, smoke and heat detection, lighting, and security provisions related to the escalators. Tasks included construction documents, cost estimates, and construction administration.
Cleveland, OH
SWSG provided AE services for the design and construction management for an office build-out which included pre-design field surveys, CDs, architectural finishes color boards, construction administration and closeout documents. The architectural design included test fit, space planning, floor plans, finishes, and architectural detailing. The MEP design included HVAC systems, plumbing systems, and wet-pipe sprinkler, AC power utility services, power distribution, and fire alarm modifications.
Herndon, VA
SWSG provided the mechanical, electrical and plumbing designs for five floors at the Worldgate office complex. Each floor consisted of 20,145 rentable square feet of shell space to be built out for offices. SWSG design documents included conference rooms, training rooms, offices, cubicle spaces, 750 KW generator, and a LAN room. A separate computer room HVAC system was designed for the LAN room.
Oakton, VA
SWSG provided AE services for CDs for an addition to house hazmat uniforms, equipment, wash station, decontamination facility and restrooms. Renovations included kitchen facility modifications and station mechanical-electrical upgrades. A second mezzanine level was added. Site design included parking, utilities, storm water management, landscaping, and site lighting.
Atlanta, GA
SWSG provided A/E services to perform a facility audit consisting of an existing conditions survey, code analysis, and recommendations for the building, MEP, fire and BAS systems. The multi-story building contained two small data centers, a POP, small deli and admin office space. The report included extensive photographs, updated electrical single-line, arc flash study, and recommendations with budget costs.
Bothell, WA
SWSG AE services provided a concept design and master plan for the mechanical and electrical infrastructure. The goals included N+2 redundancies for HVAC equipment and N+1 for generators and potential placement of exterior equipment, new interior AC power equipment, and replacement of CRAC and condenser units. SWSG developed multiple design options and ROM estimates. Each option was defined in terms of energy efficiency, cost to implement, logistics, operating cost, and practicality.
Eagan, MN
SWSG provided architecture, engineering and construction management services for the design of the installation of additional cabinets including: OptiCool refrigerant circuits, flexible hoses and heat exchangers, four battery racks and space planning for future expansion.
Wayne, NJ
SWSG AE services provided CDs for a second utility service, redundant generator and switchgear capability, and upgraded distribution for this Class-A Switch site. The generator room was converted to an AC power room. The existing service was back-fed and the existing AC service equipment removed. A temporary generator was used during the cutover period.
Aurora, CO
SWSG provided AE/CM design services to convert a 30,000 SF warehouse space into a mobile switch operation facility. The design included diesel generators, diesel fuel tank, switchgear, emergency power generation, transfer switches, DC power plants, 3M Novec fire protection, and ancillary systems. Site design included electric utility transformers, and an outdoor mechanical-electrical yard.
Mobile, AL
Reston, VA
SWSG provided A/E services for the renovation of 130,000 square feet across both floors of OPS1. The renovation program included new ceilings, lighting, and carpeting, the addition of 15 new rooms, reworking 15,000 square feet of raised access flooring, and upgrading restrooms in six cores and four break rooms, all designed to be ADA compliant. The scope of services encompassed programming assistance, field surveys, client meetings, color board schemes, engineering analyses, feasibility studies, code analyses, and preparation of construction plans and specifications. Notable features included roof daylighting design and an open office layout.
Reston, VA
SWSG provided AE services for the renovation of 147,000 SF across two floors of an office administration building which included a cafeteria and health clinic. The renovation program encompassed new ceilings, lighting, carpeting, additional rooms, restroom and break room upgrades to ensure ADA compliance, and establishment of a new health clinic. The scope included programming assistance, field surveys, color board schemes, engineering analyses, feasibility studies, code analyses and construction documents. Key features included day lighting design, an open office layout to maximize natural light, high efficiency plumbing and lighting fixtures.
Herndon, VA
SWSG provided MEP construction documents for tenant improvements for four floors, each consisting of 20,145 rentable square feet of shell space. The design encompassed conference rooms, training rooms, offices, cubicle spaces, and LAN room all ensuring ADA compliance. The scope included code compliance, electronics and security, technical design, internal constructability reviews, and construction cost estimating services.
Norristown, PA
SWSG provided architectural and construction management services, including space planning, floor plans, finishes, and detailing. The mechanical design involved replacing two split-system gas-fired furnaces and air conditioners, along with ductwork systems and rooftop units featuring dehumidification and hot gas reheat. Structural reinforcement of the roof was necessary to support the new rooftop units. Additionally, the project included electrical work such as lighting, power, and communication plans for the office, covering workstations, an uninterruptible power supply (UPS), LED light fixtures, and panelboards. The project also incorporated features to ensure accessibility, including the addition of ADA compliant restrooms.
Fairfax, VA
Fairfax County Facilities Management Department (FMD) desired to renovate two offices and a conference room into small individual offices with a smaller conference room at the Government Center Building. SWSG provided two different layouts for creating the new offices, ensuring ADA compliance throughout the design, and delivered construction documents for the preferred layout along with construction administration services.
Aurora, CO
SWSG provided AE and construction management services for an office build-out. The scope of work included pre-design field surveys, test fit, construction documents, finishes color boards, bidding and bid analysis, construction administration, and closeout documents. Services included project management, architectural drawings which included test fit, space planning, floor plans, finishes and detailing, all designed to ensure ADA compliance. The mechanical design included HVAC systems, plumbing systems, and wet-pipe sprinkler work. The electrical design included AC power utility services, power distribution, and fire alarm modifications. A full-time on-site construction manager was provided.
Cleveland, OH
SWSG provided AE services for the design and construction management for an office build-out which included pre-design field surveys, CDs, architectural finishes color boards, construction administration and closeout documents. The architectural design included test fit, space planning, floor plans, finishes, and architectural detailing. This included ADA integration for the kitchen space, restrooms and showers. The MEP design included HVAC systems, plumbing systems, and wet-pipe sprinkler, AC power utility services, power distribution, and fire alarm modifications.
Aldie, VA
SWSG provided structural engineering services for cold-formed steel exterior framing of a new 67,000 SF multi-story healthcare facility. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Landsdowne, VA
SWSG provided structural engineering services for the light gauge steel design of a five-story medical office building with a penthouse totaling 87,000 SF. The building is connected to the main hospital building with a one-story structure that has a roof parapet. The exterior walls and penthouse are framed with light gage steel. The design included a 1500 SF wing for a linear accelerator Diagnostics Center, which has three-feet thick concrete walls.
Baltimore, MD
SWSG provided structural engineering services for cold-formed steel exterior framing and metal panel wall sheathing of a six-story medical facility renovation. Services included structural calculations and coordination of elevations, sections, and connections.
Philadelphia, PA
The 170,000 SF University of Pennsylvania HUP West Tower is a 13-story medical building with a two-story penthouse. SWSG structural engineers provided cold-formed steel exterior framing with services including plan layout drawings, sections, connection details, header, sill & jamb stud schedules and calculations.
Philadelphia, PA
SWSG provided structural engineering services for exterior cold-formed steel and structural tube steel framing for the second phase of a 210,000 GSF project that added seven floors to an existing building. CFS framing was designed for Levels 10- 19. SWSG reviewed plan layouts, sections, connections, and provided calculations. Photo Courtesy of Wyatt Inc.
Baton Rouge, LA
The SE Louisiana Veterans Hospital is a new multi-building hospital campus covering twelve city blocks. SWSG provided structural engineering services for exterior cold-formed steel framing for blast loads as well as hurricane wind loads for the Diagnostic & Treatment, Outpatient, Transitional Living & Rehabilitation buildings, and Central Energy Plant.
Oceanside, CA
SWSG provided structural engineering services for cold-formed steel exterior framing of the Camp Pendleton Hospital. This new medical facility is a four-story 550,000 SF construction with exterior cold-formed steel framed exterior walls sheathed with terra-cotta tiles and metal panels. Framing was designed to resist both wind and blast loads.
Fort Belvoir, VA
SWSG provided structural engineering for cold-formed steel design of the steel exterior, interior, and parapet framing systems for the 1.3 million SF community hospital complex. The design included an innovative bracing system to protect the exterior walls of the building from blast loads using braces that extended from the exterior wall beyond the spandrel (perimeter) beams to interior floor beams.
SWSG provided AE services to prepare CDs to install a 6.1M antenna with radome. The general construction scope included antenna foundation, grounding, lightning protection, radome HVAC, antenna UPS power, antenna turning motors, lighting, access driveway, and fiber communications interconnect.
Fairfax, VA
SWSG provided AE and CA services for employee parking garage elevator modernization construction documents. The design included the elevator pit, hoist way and related machine room. Upgrades included the driving machine, controls, operators, ropes, hoist way equipment, elevator pit electrical requirements, elevator machine, elevator room electrical requirements and elevator cab.
SWSG provided AE services for three 9M Antennas with Radome. The scope of work included initial site survey and onsite kickoff meeting, design phase with full AE services for plans and specifications, construction administration services for submittals, RFIs, progress calls, site visits, prep our inspections, and progress inspection, and punch list.
Fairfax, VA
SWSG provided structural engineering for cold-formed steel exterior framing design for a new four-story 166,190 SF administrative building to accommodate both VDOT and Virginia State Police headquarters. Services included layouts, sections, connections, and calculations.
Tysons Corner, VA
AE services were provided for the measuring and recording of existing lighting levels for the interior and exterior of five offices and five garage locations. Light-level readings were compiled and high/low median readings were tabulated. A two-volume report was presented and CDs were produced based on report recommendations.
Washington, DC
The National Air and Space Museum project was a revitalization of a downtown national museum. SWSG provided structural engineering services for cold-formed steel framing. Services included elevation drawings, partial plan layout, wall sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Fairfax, VA
George Mason University required substantial ADA upgrades throughout its Fairfax campus. SWSG was tasked to prepare 23 design packages with solutions that included ramps, mechanical lifts, walkways, building entrance redesigns, theater seating redesigns, compliant restrooms and associated fixtures. During the construction of each design package SWSG provided on-site visits for quality control.
Washington, DC
Mamie D. Lee was renovated and constructed an addition for two separate public charter schools. SWSG provided structural engineering services for exterior framing and soffits for all floors of a 82,000 SF two-story renovation and addition. Services included plan layouts, sections, connections, headers, sills, jamb studs, and calculations.
Washington, DC
Duke Ellington School of the Arts is a high school in Washington, DC. This 265,000 SF school underwent a full modernization design and historic renovation. SWSG provided structural engineering services for cold-formed steel ceiling framing and stair details. Services included plan layout drawings, sections, connection details, and calculations.
Warrenton, VA
Fauquier County desired to create a new main entrance in the rear of the existing middle school building, with a new ADA compliant parking spaces and an ADA compliant exterior entrance walkway into a new corridor adjacent to the existing administration office on the main floor. SWSG provided AE design and project management services to prepare two conceptual options with budgetary costs, one more economical in approach and a second more traditional focal point entrance with roof covering. Construction documents were provided.
College Park, MD
Johnson-Whittle is a six-story residential hall overlooking Yahentamitsi Dining Hall and is home on the University of Maryland campus. SWSG provided structural engineering services for exterior cold-formed steel framing of a new 84,580 SF six-story residential facility. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
College Park, PA
Yahentamitsi Dining Hall is part of the University of Maryland’s Heritage Community joined with two resident halls and adjoining courtyard. SWSG provided structural engineering services for exterior cold-formed steel framing of a new 68,000 SF dining facility building. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
University Park, PA
SWSG provided structural engineering services for cold-formed steel on the exterior and interior framing of a new multi-level 150 ft high, 720,000 SF sports arena building. Complex changes in the arena’s exterior wall footprint were value-engineered with structural solutions utilizing cold -form steel instead of structural steel. Radical changes in the Arena’s footprint were accommodated with structural solutions utilizing cold form steel instead of modifying main structural frame which would have been very costly in terms of time and money.
College Park, MD
Pyon Chen is a six-story residential hall and is home to the University of Maryland’s Honors living-learning program. It is one of two new residence halls in the Heritage Community. SWSG provided structural engineering services for exterior cold-formed steel framing for the new 131,000 SF building. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Reston, VA
SWSG provided AE professional services for seven projects in this facility. Projects have included replacing obsolete CRACs to provide increased reliability and redundancy, upgrading AC power systems and distribution, design of new fire-rated 2000A DC plant room, and repairs for major ground bars. Design services included field surveys, progress designs, construction plans and specifications, cost estimates, sealed plans for permits, and construction administration.
McLean, VA
SWSG provided AE services for site improvements. SWSG prepared a mechanical system report. Construction documents were prepared for the installation of 48 equipment cabinets and associated PDU’s, static switches, fiber distribution bays, dehumidifiers, and refrigerant pumps. Architectural upgrades included all new finishes, demising walls, doors, access floor panels and ceiling tiles. The MEP design included refrigerant and chilled water piping and connections, dehumidification units, CRAH units, UPS and standby power distribution and connections, LED & emergency lighting, fire alarm and preaction sprinkler modifications, cable tray, fiber management, and technical grounding.
Fairfax, VA
SWSG provided AE services for the upgrade of an existing data center. The data center remained operational throughout the construction of all site improvements. The project included a new chilled water system with 600-ton heat exchanger for cooling, high-density HVAC equipment, structural modifications, an upgraded CRAC HVAC system, UPS replacement, power distribution units (PDUs), and a new 1.5 MW generator. Construction Documents, Civil site plan, and CA services were provided.
SWSG has provided cold-formed steel designs for more than ten data centers in Northern Virginia. Structural engineer services have included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations for data centers and penthouses ranging from 103,000 SF to 261,000 SF.
Kansas City, MO
SWSG provided project management, and mechanical and electrical engineering services to provide a feasibility study and report to support new IT loads for equipment, short-term upgrades to enhance capacity or reliability, and long-term upgrades to achieve current criteria for capacity, redundancy and control. The scope of work included field survey of the existing 67,000 SF facility, general M/E/FP system existing descriptions, recommendations for upgrades and modifications, and ROM estimates.
Bellevue, WA
SWSG provided AE design and CM services for a 23,000 SF new electronics lab – data center project. The project included all new utility infrastructure, back-up power systems, chilled water HVAC, building management system (BMS), and electrical distribution. The mechanical system included CRAC cooling in the data center area. The new chillers include free-cooling modes of operation. The project also included a new building management system (BMS).
Fairfax, VA
SWSG provided engineering services for the installation of power and in-row cooling systems for new high-density equipment cabinets. Mechanical and electrical engineering services prepared CDs for bid and permit and developed a ROM construction cost estimate.
West Sacramento, CA
SWSG provided AE/CMAR services for equipment procurement and CDs to expand the DC plant and OptiCool system. Design included 4000amp DC plants, overhead bus bar assembly, grounding feeders, AC input feeder, DC circuits, redundant DC feeders, FIAMM battery equipment, battery distribution fuse bay (BDFB) with circuit breakers, and commissioning.
Falls Church, VA
SWSG AE services provided CDs and permit submission for new plumbing, HVAC, and lighting systems. The shelter building interior was renovated to improve accessibility and meet ADA requirements. Sustainable and low maintenance materials were selected for the Interior and exterior. An outdoor picnic area with fully accessible grilling area and benches was also designed.
Alexandria, VA
SWSG provided architectural services to prepare conceptual specs plans in 3D Revit to reconfigure enhancements to golf instruction and indoor practice capacity with new flexibility for alternate uses as fitness classes, group activities, or group rentals. Improved HVAC, natural lighting, office, and storage spaces were also included in the conceptualization. Permit construction documents and CA were provided.
Great Falls, VA
SWSG provided AE services for CDs for a new 2,000 SF building on a greenfield site. The design included low-red light fixtures which would not interfere with the function of the telescopes and a classroom/ training area. SWSG provided CDs and CA services. The project was awarded 2017 Best New Facility by Virginia Recreation and Park Society.
Fairfax, VA
Fairfax County Park Authority desired an ADA-compliant interpretive trail to lead from information kiosks to the historical monuments at the top of the hill, then winding back down to the parking area. SWSG prepared civil engineering site plans to develop the park. The 1,335 LF interpretive trail was designed to create interest, anticipation, and unexpected viewscapes. The trail system was ADA compliant, complimented the battlefield, was beneficial in reducing the amount of storm water runoff, and hid water quality BMP facilities.
Annandale, VA
SWSG provided design services for a new 2,555 SF expansion to the existing facility including new offices and multipurpose rooms, and renovations of the existing nature center to meet accessibility requirements and designing. Features included renovated restroom area, a new reception desk, floor replacement, and additional exterior door. The design relocated the existing pond and added ADA walkways. SWSG provided a LEED credit score sheet.
Pittsburgh, PA
SWSG provided structural engineering services for CFS design of exterior and interior framing for a new 720,000 SF multi-level sports arena building. Complex changes in the arena’s exterior wall footprint were value-engineered with structural solutions utilizing cold-form steel instead of structural steel saving time and money.
Washington, DC
SWSG prepared cold-formed steel CDs for a 800,000 SF major league baseball stadium. Cold-formed steel design and calculations were completed for the interior and exterior framing of the 50,000 seat stadium. Project included design of press box floor system, whirl-pool bath floor systems, suspension design for glass sliders at owner’s suites, and field inspections.
Herndon, VA
An extensive history of the Frying Pan Baptist Meeting house (c. 1783) was conducted to establish the historic context of the building and site. Principal phases of construction were identified, with key indicators of the changes to the building listed and keyed to a location plan. Measured drawings were prepared, and preservation recommendations were outlined.
Chantilly, VA
Historic preservation services were provided by SWSG for a Historic Structure Report to develop treatment strategies and plans to repair wall, divert runoff, capture and redirect seepage, install a wood-shingled roof, and erect a gated door. The primary purpose of the report was to gain a broad understanding of the structure in order to propose treatments for the preservation of what remains of the building.
Oakton, VA
Prior to relocation of the Oakton Schoolhouse, SWSG prepared a historic structure report, which included an architectural condition assessment and summary of primary restoration recommendations. An analysis of the building materials and construction techniques was performed to determine the phases of building additions.
Great Falls, VA
SWSG provided AE services for the investigation and documentation of existing conditions of the structure, treatment and maintenance recommendations, historical research, identification of original construction material and techniques and character defining features, and a preliminary cost. ADA compliance CDs were prepared.
Bluemont, VA
Structural engineers evaluated the wood rot found in posts, girts, and sill plates throughout the building. Stabilization details were prepared depicting the correct treatment at the different types of timber connections. Thin cross braces that fit between the framing and siding allowed for retention of the historic fabric, without altering the building form
Manassas, VA
SWSG researched the medical history surrounding the Battle of First Manassas in preparation of an interpretive plan to be utilized at the site during the sesquicentennial anniversary of the battle. The Ben Lomond house is a significant historic resource due to its use as a Confederate field hospital. SWSG provided historical architectural, AE services for the Medical History report and Interpretive Plan.
Purcellville, VA
Our full AE design retained the character-defining features and minimized repair costs. The historical integrity was maintained by retaining and repairing the existing timbers. A hidden CFS building frame and new lighter metal roof was installed. The updating included LED lighting, fire sprinkler system, and geothermal HVAC. The project won 2011 Signatures of Loudoun Award for Design Excellence.
Alexandria, VA
SWSG prepared a historic structure report for Huntley which performed historic research, evaluated existing conditions of the buildings and grounds, and prepared an opinion of probable cost for recommended treatments. For the restoration SWSG prepared plans to restore the main house and outbuildings for use as a historic preservation learning center, providing windows-into-walls.
Harrisburg, PA
SWSG provided AE services for a new 12,000 SF sixth floor expansion which was designed in 16 weeks. Project included installation of six 22-ton computer room AC units, two 5-ton CRAC units, dry coolers, glycol pumps, 12.47 kV feeder to new 1000kVA substation, switchgear with UPS, power distribution units, remote power panelboards, and two 600KW generators in sound attenuated enclosures.
Bellevue, WA
SWSG provided AE/CM services to convert a shipping warehouse into a 41,000 SF data center and testing lab facility with 7.5MW utility and 9MW generator backup power. The design included data halls, BTS room, 28 RF chambers, DC, AC and UPS power rooms, device labs, support areas, receiving area, and fuel yard. Features include three 2.5MW redundant electric services with backup UPS power and three 3 MW generators with 20,000 gallon fuel system. A second floor, a third floor mechanical penthouse, and a high seismic steel dunnage platform to support the generators and mechanical equipment were added to the building.
Springfield, MA
SWSG provided architectural and civil, structural, mechanical, plumbing and electrical engineering services to replace the first floor generator, upgrade the electrical utility service and provide new electrical switchgear in a new electrical room. The new larger generator was located in an exterior sound attenuated enclosure in the yard and the existing first floor generator room was converted into a new electrical room.
Reston, VA
SWSG provided AE, project managmenet, and commissioning services for the demolition and renovation of a 2,000 SF office space for a new SCIF room and UPS room, site work for a new generator enclosure and fuel tank, and roof work including new steel dunnage and roof screens. Scope included CDs and CA.
Norristown, PA
SWSG provided AE design and full on-site CM services for a 26,000 SF switch facility. The project included a new 6,000 SF data center addition, all new utility infrastructure, back-up power systems, chilled water HVAC, BMS system, electrical distribution, and condenser relocation.
Elkridge, MD
SWSG provided AE services to increase the electrical to medium voltage dual-utility service and install two standby generators. Services for this sophisticated electrical system design included field surveys, recommendations, and construction documents. New double-end medium voltage switchgear with an automatic transfer function between feeders was installed, see photo. Short-circuit, coordination, and arc flash studies were required.
Boston, MA
SWSG provide AE services for CDs and CA to modernize the facility for dedicated electrical power and complete emergency generator back-up power. The DC power plant was relocated, a sound attenuated natural gas generator was placed on the roof, and 600 Amp 480 volt service and structural steel dunnage to support a new 750 kW generator installed.
Washington, DC
SWSG engineers designed the installation of four 1-MW generators and paralleling gear feeding 42 existing closed transition automatic transfer switches. The generators were installed under the hospital heliport and required close coordination with flight operations. Phase 2 included designs for three 1.5 MW generators and paralleling switchgear, and distribution gear.
Baltimore, MD
SWSG provided structural engineering design for the exterior wall system, exterior building signage, and Grand Ballroom suspended ceiling of the 54,500 SF Hilton Hotel Baltimore convention center. In addition, field conformance verification site visits were performed to determine compliance with design documents.
Philadelphia, PA
SWSG provided structural engineering services for exterior cold-formed steel supporting EIFS sheathing for a 14-story hotel. Services included plan layouts; sections; connections; headers; sills; jab studs; calculations; addition of elevation drawings for opening framing; and updates of the typical design data sheet notes, abbreviations, and structural connection details.
Washington, DC
SWSG provided structural engineering services for exterior cold-formed steel framing for two 13-story buildings. The exterior walls from the roof level to the penthouse roof level were framed with cold-formed steel. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
National Harbor, MD
The Potomac Promenade is a ten-story 336,000 SF residential building with exterior framing design with cold-formed steel and a brick veneer. SWSG structural engineers provided plan layout drawings, sections, details, schedules, and calculations.
Harrisburg, PA
SWSG provided structural engineering for a new three-story 235,000 SF commercial structure for cold-formed steel exterior framing. The exterior walls are framed with cold-formed steel and sheathed with metal panels. SWSG services included structural calculations and coordination of plan layouts, sections, connections, headers, sills, and jamb studs.
Ashburn, VA
One Loudoun is the new urban destination in Ashburn. Structural engineering services provided cold-formed steel design for two new three-story commercial facilities framed with CFS, EIFS, metal panels, and masonry. The designs included exterior walls, parapets, soffits, and cornices. Plan layout, sections, connections, and calculations were included in the scope.
National Harbor, MD
SWSG provided structural engineering services for cold-formed steel design of a new multi-story 28,800 SF casino with exterior and interior building framing assemblies including the West Prow soffits and wall, theater exterior and ramp, roof gutter, penthouse, Unistrut ceiling support, canopy and exterior walls.
Annandale, VA
The Mason District Amphitheater is home to a very popular free summer concert series. SWSG designed a new theatre, resembling the destroyed theatre by using photographs of the original structure while bringing the new facility up to current codes. Work was expedited so that the theatre opened on time for the summer season.
Warrenton, VA
Several schematic design options were submitted to the Warrenton Architectural Review Board in order to provide ADA accessibility, and to increase the occupancy load by creating a second exit. An addition was constructed that is sympathetic to the historic character of the old library. The design utilizes a glass hyphen between the old and new structures to maintain the form of the historic building.
Fairfax, VA
Fairfax County Park Authority desired an ADA-compliant interpretive trail to lead from information kiosks at a new parking lot to the historical monuments at the top of the hill, then winding back down to the parking area. Working with an FCPA project team, which included a Civil War activist and battlefield monuments trustees, SWSG prepared civil engineering site plans to develop the park.
Rockville, MD
SWSG provided design services for the demolition of the existing outdoor bathhouse and the construction of a new bathhouse. Phases included schematic design, programming, design development, construction documents, bid support, and construction administration. Specific design elements included: accessibility for senior citizens and ambulatory disabilities, energy-efficient design elements including low maintenance, bio-rational and energy efficiency components, lines of sight throughout the building for supervision, safety and risk management and control, facility equipment and construction materials designed for long life-cycle cost, and security. Energy-efficient design elements included, low maintenance, bio-rational, and energy-efficient components.
Alexandria, VA
Sunrise of Alexandria is a senior living community. SWSG provided structural engineering services for exterior cold-formed steel for the new 25,000 SF four-story senior care facility. Services included plan layout drawings, sections, connection details, header schedules, sill schedules, jamb stud schedules, and calculations.
Alexandria, VA
SWSG provided architectural and structural and civil engineering services to replace the surface decking and toe rails of the 18,500 SF of boardwalk including enlarged classroom platforms and observation tower. Options were explored to further enhance visitor interaction with the wetlands environment, including transparent sections in the deck, lower and/or floating boardwalk sections at the water level and replacing existing steel guards with a less obtrusive style.
Manassas, VA
SWSG AE services designed CDs for a 2,300 SF animal shelter restored space fit-out consisting of architectural
programming, space planning, furniture layout, schematic design, door hardware, roofing, and interior finishes.
Engineering included HVAC, plumbing, arc flash study, ground fault loading study, low voltage systems, security,
keying system, IT, CCTV, and centralized building systems controls.
Join SWSG’s 10-week internship program for hands-on experience in architecture or engineering. Work on diverse projects and contribute to real-world design challenges. Competitive pay and valuable exposure in your field of study. SWSG seeks interns pursuing degrees in these disciplines:
Complete the form and upload your resume to take the next step in shaping your professional journey!
SWSG seeks experienced individuals with high degree of professionalism and ability to work with all levels of employees.
Support our firm in accounting, human resources, or general administration. A bachelor’s degree is required.
Complete the form and upload your resume to take the next step in shaping your professional journey!
Our Construction Managers supervise complex telecommunication and other facilities around the nation. They are responsible for comprehensive construction management of every stage of the project. They interface directly with our clients, maintain relationships with contractors and suppliers, and create a safe work environment at sites.
A Bachelor’s Degree in Engineering, Architecture, Construction Management, or related field, is preferred and a minimum of 10 years of building construction experience required.
Complete the form and upload your resume.
Complete the form and upload your resume.
SWSG welcomes professionals to assist with the management and leading of projects, developing full construction documents sets, mentoring professionals, maintaining project quality control, and providing construction administration. SWSG is looking for team players with self-discipline to meet client deadlines and maintain a positive work environment.
Qualifications include a BS or MS in architecture or engineering and 4 years of design experience and LEED Accredited Professionals are preferred. A Registered Architect or Professional Engineer license is required, with proficiency in REVIT and AutoCAD.
Complete the form and upload your resume.
Embark on an exciting journey with SWSG’s early careers program for professionals. Get hands-on experience in architecture, engineering, or construction management. Contribute to diverse projects, tackle real-world design challenges, and build a strong foundation for your career.
SWSG is seeking graduates with degrees in architectural design, structural engineering, mechanical-plumbing engineering, and electrical engineering.
Complete the form and upload your resume; begin your career journey with meaningful experiences.
President
Ramez is an entrepreneur and distinguished leader with solid proven experience in A/E and PMCM work. His extensive leadership journey includes pivotal roles as CEO, President, General Manager, and more. He played a strategic role in diversifying target markets, consolidating operations, steering mergers and acquisitions, and securing mega-dollar contracts for cumulative $100+ billion construction programs. Ramez has managed global businesses with over $500 million in annual revenues, led teams of 4000+ professionals, and excelled in managing and delivering multi-billion dollar award-winning programs on time and within budget. His expertise extends to leading Public-Private Partnership (PPP) and Engineering Procurement Construction (EPC) programs.
Bachelor of Science – Civil Engineering
Michigan State University
Master of Science – Civil Engineering
Michigan State University, Magna Cum Laude
Practical MBA Program
Somerset CPAs Institute
Discipline Leader, Electrical Engineering
Biftu Rumicho joined SWSG in 2016 and is now our Discipline Leader of Electrical Engineering. He is responsible for overseeing quality control, and code compliance of electrical engineers. Biftu has 15+ years of extensive experience designing telecom, mission-critical, and office tenant facilities. He enjoys mentoring the upcoming generation of EEs working together on energy-efficient and cost-effective design solutions. His strong work ethic is appreciated by clients and staff.
Bachelor of Science – Electrical Engineering
University of Minnesota Institute of Technology
Director of Architecture
Zeena’s philosophy is to create innovative architecture that satisfies client needs as well as the surrounding environment. Her creativity and artistic style go hand in hand with her extensive expertise in the building codes, construction management, and sustainable design,delivering unique projects and client satisfaction. She joined SWSG as a junior architect and has since grown with the firm to become a trusted team leader who supervises the architectural team. She is a registered architect in several jurisdictions and a LEED accredited professional.
Bachelor of Architecture
University of Jordan
Director of Program Management
With a two–decade career, Justin is now the Director Program Managemenet with a can-do attitude and is responsible for overseeing projects from programming and design development through construction administration and commissioning. His management activities focus on directing and coordinating his team to design and administer construction for facilities. Justin is adept at addressing technical issues and engineering coordination. He is passionate about communication, achieving projects’ objectives, and ultimate client satisfaction.
Bachelor of Science – Mechanical Engineering
University of Mississippi
Director of Administration / Program Manager
Bachelor of Science
Virginia Polytechnic Institute and State University
Historical Preservation Certificate
Northern Virginia Community College, Summa Cum Laude
Director of Construction Management
Charles joined SWSG in 1998 and leads the organization’s Construction Management Division. Holding a Class A general contractors license in Florida and North Carolina, he embodies a culture of communication and collaboration that has been integral to SWSG’s success. With advanced knowledge of mission critical facilities and personable leadership, he is well-respected by clients, contractors, and team members. His efforts have led to the significant growth of our telecommunications portfolio.
Study of Architecture
Northern Virginia Community College
Discipline Leader, Structural Engineering
Arash Rezavandi joined SWSG with extensive experience with seismic and wind resistance systems and the design of concrete and steel structures. He has experience with advanced analysis such as Pushover, Nonlinear time history, spectra, and analysis. As a Discipline Leader, Arash coordinates his team in a wide variety of structural engineering projects and cold-formed steel designs including hospitals, educational, recreational, and large telecommunication facilities. Arash works diligently with clients and staff to achieve shared success.
Bachelor of Science – Civil Engineering
Tabriz University – Iran
Masters of Science – Structural Engineer with a focus on Earthquake Engineering
Azad University – Iran
PhD – Civil/Structural Engineering
University of Maryland College Park
Manager of Special Projects
Paul Luoma joined SWSG in 2001 and is an Associate of the Firm. For over two decades, he has led the electrical engineering department initiating and providing quality control for the complex electrical system designs on hundreds of mission-critical, government, and commercial buildings. His progressive experience includes management, design, and construction administration for numerous projects across the USA and Canada and passing this experience in the firm by mentoring and training the younger engineers.
Bachelor of Electrical Engineering
University of Delaware
Director of Architecture
Gary Luzadder is an Associate of SWSG with progressive experience in architectural design, project management, and construction administration. Gary is skilled at site planning, feasibility studies, code analysis, and creating cohesive construction documents for high-performing and mission-critical buildings and recreational facilities. His work demonstrates an understanding of the interrelationships and interdependencies with building systems. Gary is passionate about accessibility and has an excellent reputation for skillfully integrating practical and cost-effective designs.
Bachelor of Architecture
Virginia Polytechnic Institute and State University
President
Mike Robertson is the president of SWSG and a proven leader with 30 years of complex mission-critical and data center experience. He focuses on design, project management, construction administration, and quality assurance in the public and private building industry. Mike leads design teams to develop creative, cost-effective solutions in the design of HVAC, fire protection, plumbing, and fuel systems for government, recreational, commercial buildings, historical sites, mission-critical, and telecommunications facilities.
Bachelor of Science – Mechanical Engineering
West Virginia University, Magna Cum Laude
Board Member
Dave Sarver is a co-founder and member of the Board of Directors. With over 40 years of experience in commercial building design, project management, construction administration, and quality assurance, Dave’s role is to mentor and motivate our active professionals. His personable and collaborative style emphasizes good communication among staff and clients. Dave continues to support our company officers and helps maintain strong professional client relationships.
Bachelor of Science – Mechanical Engineering
Virginia Polytechnic Institute and State University
Board Member
Don Gray is a co-founder and member of the Board of Directors and performs as a program manager for term contracts with local governments and other major telecommunication organizations. Don’s focus on employee welfare and customer satisfaction has resulted in high team morale and client satisfaction. Don is a skilled program manager with a proven track record of delivering highly technical projects with tight deadlines. His leadership approach successfully manages complex projects through planning, design, permitting and their challenges. He is known for his strong work ethic and ability to communicate and deliver results.
Bachelor of Science – Civil Engineering
Virginia Polytechnic Institute and State University
Board Member
Ray Shaffer is a co-founder and member of the Board of Directors and was the President of SWSG from its founding in 1985 until his retirement from that position in 2023. He has over 50 years of progressive experience in the design and building construction industry at both the professional and executive levels. Ray’s present role is as an advisor to the leadership of SWSG. He remains dedicated and supportive of the firm and looks forward to its continued growth and success.
Bachelor of Science – Civil & Structural Engineering
The Johns Hopkins University
Graduate Studies in Engineering Administration
George Washington University
