SGH collaborated with the architect, Workshop APD, on the project. Highlights of our structural and code/fire engineering work include the following:

• Designed apartment renovations and the townhouse building’s structure, comprising concrete masonry bearing walls with steel-framed floors

• Created an open floor plan without interior columns

• Detailed steel beams set up into the floor slab to accommodate deeper members needed to span the open layout, while maximizing headroom

• Designed exposed steel and wood canopies at roof

• Added a steel-framed mezzanine in each unit between the existing first and second floors with exposed steel stairs connecting the first floor to the mezzanines

• Developed repairs for corroded steel beams at the existing sidewalk vault

• Designed new retaining walls as part of landscaping improvements

• Provided code consulting and fire engineering support to optimize fireproofing on the architecturally sensitive structure

• Assisted with code review and coordinated with fire alarm and sprinkler designers

We also consulted on the building enclosure systems, including below-grade waterproofing, above-grade waterproofing, roofing, windows and doors, curtain walls, and skylights, and helped detail and integrate the various systems. SGH performed window water penetration resistance testing and hygrothermal modeling for above-grade walls.