CASE STUDY

Washington Adventist Hospital

Washington Adventist Hospital

Project Type: Healthcare

Washington Adventist Hospital
Silver Spring, MD

We were part of the design team for this new 440,000 SF hospital located in Silver Spring, MD, which included an underground level plus seven floors of patient care. Our scope involved design consultation for sound isolation, mechanical noise control, site exterior noise studies, and noise ordinance reviews. This project was designed with the goal of achieving certification under the LEED for Healthcare 2009 rating system as well as the criteria listed in the 2014 FGI Guidelines.

Sound isolation was of particular importance in this project. Speech privacy and proper sound mitigation between various rooms in a hospital environment is vital to overall patient comfort and for maintaining the appropriate level of privacy during conversations between doctors, staff, and patients. We reviewed all architectural documents and providing recommendations for wall/ceiling assemblies to achieve the sound isolation criteria in the FGI and Sound and Vibration Design Guidelines for Health Care Facilities (SV Guidelines). In the open areas and areas where there are partial- height partitions, we reviewed plans, finishes, and materials and providing specific guidelines that include product information and informal drawings where necessary to illustrate our intent.

The mechanical systems needed to be evaluated and designed in accordance with the FGI and SV Guidelines as well. We reviewed MEP drawings that indicate equipment and duct configurations, duct sizes, and installation details, as well as equipment sound data provided by the mechanical engineers and calculating sound levels in representative spaces. We compared the predicted sound levels to the approved Guidelines and provide our analysis, recommendations, and product recommendations.

In order to earn an additional point in the LEED certification, exterior site noise needed to be under a specific level. We performed testing on site to determine an average day-night average sound level (DNL). Using two integrating sound analyzers at pre-determined locations on the future site of the hospital, we recorded typical measurements over the course of several days. The results were encouraging. There were no levels that exceeded the minimal allowable range according to the Guidelines.

 

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