Tag Archives: vibration monitoring

Projects

321-325 W 35th Street, New York, NY

Project Spotlight: 321-325 W 35th Street, New York, NY

LIST OF SERVICES:

– Crack Gauge/Telltales Installation and Monitoring
– Real Time Vibration Monitoring (seismographs)

Saltus was hired for services related to foundation work for a commercial project located at 321-325 West 35th street, between 8th and 9th Ave in the Hell’s Kitchen section of Midtown Manhattan, south of Times Square. Their services were conducted over a 16-month period. Services included crack gauge/telltale monitoring, installation of seismographs and real time vibration monitoring for the duration of the project.

saltus, Knickerbocker Hotel, Hilton Garden Inn, Times Square, vibration monitoring, NYC
Projects

136-140 W 42nd Street, New York, NY

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Project Type: New Construction – Foundation Work

 LIST OF SERVICES​​:

  • Crack Gauge Monitoring
  • Existing Condition Photographic Documentation –​ NYCTA S Shuttle Subway Line
  • Manned Seismic Monitoring
  • ​​Real Time Vibration Monitoring

Saltus was contracted to perform a variety of services related to the new construction of the Hilton Garden Inn Hotel located at 136-140 West 42nd Street in the heart of Times Square, in NYC. The 175,000 sq. ft. hotel is located next door to the historic Knickerbocker Hotel, with 35 hotel floors plus 3 floors of retail space. The building is a concrete flat plate structure. The hotel is in close proximity to major Times Square and Midtown Manhattan attractions and was designed to overlook Times Square attractions, including the New Year’s Eve ball drop.

We performed services related to the foundation portion of the project as required by the NYC DOB code and NYCTA. This included both monitoring services for both subway tunnels and because of requirements regarding adjacent landmark building districts.

For the NYCTA subway tunnels, we provided Existing Conditions Survey/Photographic Documentation services. We also installed crack gauge monitors and provided monitoring services in the Subway tunnel.

For required vibration monitoring, we installed seismic monitoring equipment and provided Manned Seismic Monitoring (continuous) and Real Time Vibration Monitoring for the duration of the project.

 

Projects

51 Jay Street, Brooklyn, NY

Featured Project: 51 Jay St, Brooklyn, NY

Project type: Major Renovation, Demolition, Addition 

Services: Pre-construction survey, Existing Conditions Photographic Documentation, Seismic Monitoring, Vibration Monitoring, Crack Gauge Monitoring, Subway Tunnel Monitoring

Our client hired us to provide services at their construction project located at 51 Jay Street in the DUMBO historic district in Brooklyn, NY. The property is a landmark building and was remodeled by the client. The building now houses condominiums.

Saltus LLC performed a pre-construction survey on an adjacent building located on Water Street prior to the start of the project. We also performed vibration monitoring at the site to preserve the historic facade façade of the building.

The project included additional services related to the east (Manhattan bound) subway tunnel adjacent to the construction site.

Services were conducted for the duration of the 15-month long project.

Some details of the work include the following:

  • Wireless vibration monitoring was completed on the façade of the building from the top floor to the basement during the demolition and construction phases. Included real time monitoring and notification services.
  • A crack gauge monitor was placed on the façade of the building, on the northwest corner of the site.
  • Our work in the subway tunnel included both photographic surveying as well as vibration monitoring for the Manhattan-bound subway tunnel running under the East River. For this project, our team installed seismic monitoring equipment in the tunnels located 10 flights below ground.
  • Our services included manned monitoring with on-site technicians.