Abstract
The ASTM E33 Committee on Building and Environmental Acoustics has recently undertaken an effort to improve the precision and bias statements of all of the standards under its purview. Based on an analysis of the current state of the precision and bias statements and each standards importance to the industry, ASTM E90 was chosen as the standard to focus on first. Improving the precision and bias statements requires an intra-laboratory performance study, also known as a round robin, to be performed. Previous round robins for ASTM E 90 used relatively low performing specimens, Sound Transmission Class (STC) 24-32. The current proposed round robin is planned to use specimens with a STC in the high 40’s to low 50’s. Details of these efforts will be shared.
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