Artimus Construction was renovating the seven-story commercial Corn Exchange Building at 81 E. 125th Street in the Harlem section of Manhattan. The building, constructed around 1900, had Landmark status. Due to the presence of an elevated subway line across the street, the windows for the building had to satisfy an (e) designation of 35 dBA OITC. The windows had to be custom made, and the manufacturer did not have test results for the OITC rating. Therefore, the Mayor’s Office of Environmental Review (OER) asked Artimus to demonstrate that interior noise levels would comply with an L10 of 50 dBA, which is appropriate for the proposed commercial space. SEA prepared the noise study for Artimus and demonstrated that the windows would be suitable for use.
- Coordinated with OER on analysis protocols
- Monitored interior noise levels on 3rd floor from 7 am to 10 pm
- Concurrent traffic classification counts and rail passbys
- Calculated future traffic noise due to traffic growth
- Noise report according to NYC CEQR Technical Manual
SEA has monitored noise levels in other buildings to determine whether the installed windows would comply with the requirements of the CEQR Technical Manual. Others include 3560 Webster Avenue and the 84 Sanford Street Yeshiva.