MBJ’s engineers solved five key structural engineering objectives that contributed to the project’s success including 1) replacement of the existing MEP infrastructure with energy efficient building systems, 2) modification of vertical movement (stairs, elevator, escalators), 3) renovation of the historic façade and roof, 4) new floor openings for visibility and circulation, and 5) new rooftop terrace and outdoor amenities. We created multiple 3D structural Revit models to effectively communicate with the owner and project team. These models were visual tools and especially helpful during demolition and construction. Extensive demolition and large floor openings of multiple existing floors was performed. Demolition included the removal and recycling of 53 obsolete escalators and as a result, significant infilling and structural reinforcing was required. Through comprehensive preservation efforts, the Dayton’s Project was named to the National Register of Historic Places. Original elevator doors, and other building hardware, lighting fixtures, railings, and floor tiling were restored along with the intricate crown molding.

The team structurally reinforced the existing roof infrastructure to add a new indoor winter lounge and outdoor summer terrace complete with a green roof, seating, and a separate bar area atop the original building. The Dayton’s Project is the perfect blend of old and new. Extensive preservation efforts inside and out were seamlessly paired with new modern amenities including new HVAC systems, new wellness center, sitting area, and rooftop comforts.