Abstract
A facility requiting great flexibility in the size and arrangement of partitioned spaces for evaluating various computer systems was designed with fixed lighting and air conditioning diffusers. Sound absorption is provided by a 5‐ft (1.5 m) by 5‐ft grid of vertical acoustical panels consisting of fibrous glass and perforated metal facing approximately 15 in. (0.38 m) high and 2 in. thick. Measured room to room noise attenuation and the effective ceiling sound absorption coefficient compare favorably with a conventional continuous horizontal acoustical ceiling and partial partitions which extend to 2 to 3 ft below the ceiling. The open grid system eliminates the need to change the duct and diffuser layout and permits unrestricted access to the open plenum space for modifications of services and maintenance. Fire protection systems can also be hidden from view in the darkly painted plenum. The room to room noise reduction values of such an open grid system can be predicted by a simple model.
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