Philadelphia, PA

Parkway 22


The Parkway 22 complex was designed as a thirty-seven-story luxury condominium tower with adjacent four-story traditional townhouses, and a seven-story contemporary loft building in a heavily populated urban environment. The 900,000 sq ft project, which was never constructed, included a mix of timber-, concrete-, and steel-framed structures supported on a cast-in-place concrete below-grade parking structure. SGH consulted on the structural and building enclosure designs for this development.

Highlights of our work include the following:

  • Designed a distinctive floor system for the tower using a creative combination of reinforced concrete slabs, long-span metal deck, and inverted steel T-beams
  • Collaborated with the design team to provide living spaces unencumbered by beams while maintaining 9 ft ceilings with less than 10 ft floor-to-floor height and 10 ft ceilings with less than 11 ft floor-to-floor height
  • Completed framing studies and developed framing layouts for the four-story (wood) and seven-story (concrete on metal deck) loft buildings to achieve open floor plans and high ceilings
  • Designed transfer girders and leaning columns to transfer the building’s loads into the below-grade structure
  • Used Revit Structure as the drafting basis and delivery tool for the contract documents
  • Coordinated with the landscape architect regarding heavy soil and vehicle loads on the plaza/garage roof and helped design site structures
  • Consulted on the design of the building enclosure, including below-grade, plaza, balcony, and green roof waterproofing

Project Summary



Project Size
New Construction
Building Enclosures | Structures
Burt Hill, a Stantec Company
Specialized Capabilities
Building Design | Roofing & Waterproofing

Key team members

James Parker
James Parker
Head of Structural Engineering and Structural Mechanics
Matthew Johnson
Matthew Johnson
Structural Engineering Division Head, Chicago
Peter Babaian
Peter Babaian
Building Technology Division Head, Chicago