The need, and plans for, an intra-laboratory study to improve ASTM International standard E90’s precision and bias statement

摘要

The ASTM E33 Committee on Building and Environmental Acoustics has recently untakenan effort to improve the precision and bias statements of all of the standards under itspurview. Based on an analysis of the current state of the precision and bias statements andeach standards importance to the industry, ASTM E90 was chosen as the standard to focuson first. There is also a growing body of research showing the disagreement between labs.Improving the precision and bias statements requires an intra-laboratory performancestudy, also known as a round robin, to be performed. Previous round robins for ASTM E 90used relatively low performing specimens, Sound Transmission Class (STC) 24-32. Thecurrent proposed round robin is planned to use specimens with a STC in the high 40’s to low50’s. Details of these efforts will be shared, which include a mini pilot round robin.