Case Studies

BRD Noise & Vibration Control was selected for acoustical modeling and implementation to meet the required NC targets of a new construction project using (3) rooftop units for a local performing arts school. In order to achieve this target, BRD provided a recommended specification and manufactured (3) fully assembled perimeter Hush Curbs™ with composite insulation materials for the curb plenum, and Hush Duct™ silencer selections for the supply and return ducts, while keeping unit performance and pressure drop in mind.

BRD Noise & Vibration Control was selected for acoustical modeling and implementation to meet the required NC targets of a new construction project using (3) rooftop units for a local performing arts school. In order to achieve this target, BRD provided a recommended specification and manufactured (3) fully assembled perimeter Hush Curbs™ with composite insulation materials for the curb plenum, and Hush Duct™ silencer selections for the supply and return ducts, while keeping unit performance and pressure drop in mind.

The building owner had replaced existing “problem” units with new rooftop equipment. After installation, the business received noise complaints from adjoining residential properties.

A city-mandated sound ordinance required no more than 55 dB(A) sound pressure at the property line. In order to achieve this, BRD performed acoustic modeling onsite to determine the total reduction necessary, a 10 dB(A) reduction to guarantee compliance.