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Ann M. Short

P.S. 146M

New York, NY • Civil Engineering

Our Role

  • School Playground Redevelopment
  • Flood Elimination System Design
  • Stormwater Management Design
  • Grading Design
  • ADA Compliance
  • Compliance with SCA Design Standards

The Ann M. Short School (P.S. 146M) is located in the East Harlem neighborhood in the borough of Manhattan, NY. The school was originally built in the 1960s and consists of an existing 3-story building which has a capacity of approximately 350 students. With this project, the NYC School Construction Authority (SCA), in coordination with the NYC Department of Education (DOE), seeks to address existing infrastructural vulnerabilities to potential flood hazards through the federally funded Ida Flood Elimination Program. Koysman Engineering (Koysman) was retained to provide civil engineering & design services for the redevelopment of the school playground and surrounding areas.

The playground at P.S. 146M had a deficient drainage system which clogged frequently, could not handle present stormwater design flows, and promoted the presence of standing water. Additionally, the playground had deteriorated over time and needed repair. The scope of work for this project involved the redevelopment of the existing playground to achieve several outcomes: improve the flood resiliency of the building and playground, address ponding and drainage issues, address accessibility issues, and improve the aesthetics of the playground and adjoining areas.

The Koysman team produced a civil design package consisting of: site, demolition, grading, and drainage plans; construction details; and erosion & sediment control plans. All work was coordinated in detail with the design team (architectural and structural disciplines), project reviewers & stakeholders (SCA), and regulatory agencies such as the NYC Department of Buildings (DOB) and the NYC Department of Environmental Protection (DEP).

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