Macallen Building Condominiums

SGH designed the structure for the condominium building. The residential portion of the building is a 218,000 sq ft, steel-framed structure between six and eleven levels tall. The three-level, 100,000 sq ft parking garage is a cast-in-place reinforced concrete structure below the residential portion of the building. SGH’s work for this project includes the following:

• Compared varying framing layouts affording ceiling heights between 9 ft and 10.5 ft within an 11 ft floor-to-floor height and provided the owner, architect, and construction manager with a floor plan matrix comparing structural depths, ceiling heights, steel tonnage, and beam/girder spacing for cost/benefit analyses
• Participated in a value engineering process resulting in a steel system lighter than anticipated
• Designed a staggered steel truss system for the residential levels providing interior, column-free modules of 72 ft x 64 ft and reducing the need for column transfers at the parking level drive lanes

SGH also investigated cupping and delamination of bamboo flooring. We performed material testing, developed repair options, oversaw construction of mockups exposed to accelerated moisture gain/loss, and developed a repair specification to maintain LEED certification and resulting in a whole-system warranty.