Symphony House Condominiums


440 South Broad Street, Philadelphia, PA


Symphony House Associates, Dranoff Properties, Philadelphia, PA


Bower, Lewis Thrower (BLT) Architects, Philadelphia, PA


The Harmon Group, King of Prussia, PA (Structural)


L.F. Driscoll Co., Bala Cynwyd, PA
Intech Construction, Philadelphia, PA

Project Scope

Sq. Footage:



32-story condominium tower with retail, parking and 365-seat live theater

Architectural Precast Elements:

• 805 lightweight precast panels on the exterior.
• Precast installation completed in five months

Key Attributes:

• Precast concrete panels embedded with thin brick created panelized system that sped up construction and reduced long-term maintenance.
• Lightweight GFRC panels reduced weight on high-level panels, saving weight to open interiors more, reduce superstructure and foundation requirements and reduce the overall carbon footprint.
• Insulating EPS foam on panels’ interior side provides high energy efficiency in lightweight panel.
• Panels serve as a face-sealed curtain-wall system that reduces risk of moisture penetration, which was preferable to a rainscreen created with brick veneer or EIFS.
• Ease of erection aided project due to restrictive site in busy, urban area.
Symphony House Condominiums
Symphony House Condominiums
Symphony House Condominiums
Symphony House Condominiums
Symphony House Condominiums
Symphony House Condominiums
Symphony House Condominiums

Symphony House Condominiums, a 507,000-square-foot, 32-story tower with ground-level retail, was constructed adjacent to a 25,000-square-foot theater and features a dramatic stepped-back silhouette. Terraces and overhanging balconies enhance the traditional feel.

The first eight levels contain parking, theater and retail and are clad in conventional precast panels. The upper 24 residential floors are clad in lightweight carbon-fiber reinforced precast concrete (GFRC) panels. The combination provided a variety of benefits.

Backed with insulating EPS foam, the GFRC panels weigh only 30 pounds per square foot, less than half the weight of conventional precast concrete panels. The lighter weight made it easier to erect the panels high in the air in a busy neighborhood.

The design team had three non-negotiable requirements: aesthetics, color depth and consistency, and water-tightness. The precast concrete panels provided all three and also contributed to the building’s energy efficiency.

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