The Brooklyn Bridge Park Development Corporation (BBPDC), a subsidiary of the NY Empire State Corporation, is responsible for the planning and construction of Brooklyn Bridge Park. The approximately 85 acre project consisting of piers, upland and water area would stretch along 1.3 miles of Brooklyn waterfront. The area is approximately bounded by Jay Street on the north, Atlantic Avenue on the south, Furman Street on the east, the East River on the west and would include Piers 1 through 6. The purpose of this project was to monitoring the Historical Empire Stores Buildings during the construction of the Fulton Ferry Pier. E2PM designed a crack monitoring program to identify and monitor the cracks that were most indicative of the ones that may widen during the construction process. As per the Landmark Preservation Commission (LPC) and NYCDOT, the Peak Particle Velocity (PPV) was set at a triggering value of 0.5 in/sec, which is 4 times lower than the NYCDOT threshold value of 2.0 in/sec.
E2PM was contracted by the BBPDC through their construction manager Skanska USA Building Inc. as their Inspecting Engineer to perform a pre-construction condition assessment, monitor the existing cracks and monitor vibrations during the construction of the Fulton Ferry Pier. The monitoring focused only on the adjacent Historical Tobacco Warehouse and the Empire Stores.
Services conducted by E2PM for the BBPDC:
- Pre and Post Construction Surveys
- Installation of 5 Instantel Seismographs
- Measurements taken of the Crack Gauges Bi-Weekly
- Earthquake Inspection
- Soil Erosion & Sediment Control Inspections