Randall’s Island, NY

Structural Engineering
About This Project

Location: Randall’s Island, NY

Client:  NYC Department of Parks and Recreation

Size: 29,000 sq ft

Project Type: Commercial, Green Roof

Site Activities: Assess Structural Stability

Year Completed: 2018

Key Services

Structural Engineering

  • Structural Stability Assessment
  • Structural Design
  • Structural Recommendations Report
  • Department of Buildings Filing

Project Description

Randall’s Island is home to the Parks Department’s Five Borough Administrative Building, the central hub for Citywide Services as well as the renowned Parks Fleet. In 2007, Parks began the installation of a green roof at Five Borough. Today, Parks’ roof at Five Borough is at the forefront of green roof technology. The green roof contains 25 systems covering over 29,000 square feet of roof on the west wing of the building.
In 2017, GRANT was contracted by the New York City Department of Parks and Recreation to assess the load capacity of a newly installed section of green roof, and the structural member supporting it. GRANT was brought in to assess the capacity of the existing roof and suggest cost effective ways to strengthen it. In 2018, GRANT was contracted for an additional design change which would allow for additional stability with increased load.