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Government

Cloudburst Infrastructure Design Servies – Sheepshead Bay and Breukelen Houses

Brooklyn, New York

Project Overview

MFS Engineers & Surveyors provided geotechnical engineering and land survey services for the New York City Housing Authority (NYCHA) Cloudburst Infrastructure Design Services project at the Sheepshead Bay Houses and Breukelen Houses located in the borough of Brooklyn, New York. The project scope supports the NYCHA’s climate adaptation goals, focusing on resilient landscape designs to mitigate stormwater flooding risks and enhance sustainability across vulnerable developments.

Brooklyn, New York

Project Details

Prior to mobilizing for the subsurface investigation, MFS coordinated with a trusted subcontractor to conduct a private utility mark out utilizing ground penetrating radar (GPR) methodologies in the vicinity of the proposed boring and permeability test locations at the project site. MFS coordinated with a trusted subcontractor drilling agency to conduct four test borings at the Sheepshead Bay Houses and two test borings at the Breukelen Houses for a total of six test borings. Each test boring was conducted to a depth of 15 feet to 16 feet below existing site grade, with soil samples taken via Standard Penetration Testing (SPT) continuously from a depth of 1 foot below grade to the respective boring termination depth. Permeability tests were conducted at depths of 3 feet, 5 feet, and 10 feet below grade in adjacent boreholes to each completed boring location in accordance with Appendix F of the NYC Green Infrastructure On-Site Design Manual.

MFS provided on-site, full-time oversight during the subsurface field investigation for the project. During boring operations, MFS observed the subsurface conditions and generated test boring logs to include soil classifications in accordance with the United Soil Classification System (USCS) and the New York City Building Code (NYCBC), groundwater observations, action of equipment, and other noteworthy observations. During the permeability testing, MFS conducted the testing and recorded the drop in water at specified intervals to determine the permeability rates of the soils. The data recorded was entered into the NYC Green Infrastructure permeability test log templates along with other noteworthy observations.

Upon completion of the field investigation, MFS coordinated with an accredited geotechnical testing laboratory to conduct laboratory testing on select soil samples to verify field classifications and obtain geotechnical physical characteristics. The laboratory testing conducted on soil samples included moisture content and sieve and hydrometer analyses.

The results of the field investigations and laboratory testing were compiled and presented in a written Geotechnical Scope Summary Memorandum for each separate project site. The memorandums included a detailed summary of the field methods used as well as final typed boring logs, permeability test logs, an as-drilled subsurface investigation plan, and recommendations on the suitability of stormwater infiltration practices.

Stats

  • Owner:
    NYCHA

Services Provided

  • MFS provides professional geotechnical engineering services including geotechnical investigation and subsurface exploration, soil engineering services, and permeability testing.