Welcome

Lewis S. Goodfriend & Associates is a diversified acoustical engineering consulting firm offering professional services in the fields of architectural acoustics; building acoustics; noise evaluation and abatement including environmental, industrial and transportation; HVAC, vibration analysis and expert witness testimony. The firm is registered as a Small Business Enterprise with the New Jersey Commerce & Economic Growth Commission.

With more than 50 years of experience in providing consulting engineering services for a wide range of projects and clients, our engineering staff effectively interfaces with professionals in all disciplines. Our extensive experience includes working with architects, planners, engineers and attorneys, both in the private sector and in government. The firm has worked closely with various industries for many years, having provided services for K. Hovnanian, Pfizer, Home Depot, Verizon and Sunoco on a wide variety of projects. 

Acoustics & LEED

Acoustical design is now being implemented or considered in several LEED projects including LEED for Schools, LEED for Healthcare, and LEED for Homes. Please click here for more details on Acoustics & LEED.

Featured Project


National Institutes of Health Cogeneration Plant

Client Name:
PRENCO Services, Inc.

Project Location:
NIH, Bethesda, Maryland

Date Completed: 2003

Highlights:

  •  Baseline Ambient Measurements
  •  Detailed Acoustical Modeling
  •  Noise Control Recommendations
  •  Post-Installation Compliance Measurements

Lewis S. Goodfriend & Associates completed an acoustical analysis of the expected noise impact at the neighboring residential properties along the southeast property line, due to the installation of mechanical equipment associated with the Building 11A Cogeneration Project at the National Institutes of Health (NIH) campus located in Bethesda, Maryland.

Based upon the proposed equipment to be installed as part of this project, LSG&A developed a detailed acoustical model of the near and far field sound pressure levels of the cogeneration plant. The results of the acoustical model were used to develop noise control recommendations for the plant in order to meet the internal and property line noise regulations.

After the installation of the cogeneration plant was completed, LSG&A returned to the site to repeat the sound pressure level measurements and verified that all near-field and property line acoustical design goals were successfully attained.

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