Goals: Ballot #1 1)Define a minimum sample size for spaced or single free objects in ASTM C423 2)Require the sample designation to include a description of the object spacing, so that it is more clear that ASTM C423 test results are for that specific configuration. Ballot #2 3)Facilitate the common use of single number metric by architects in specifying sound absorption treatments, since spaced object arrays have become an architectural trend. 4)Provide a fair comparison for spaced object arrays to other ceiling acoustical treatment options such as ceiling tile, spray applied cellulose, acoustical deck, etc.
Date Initiated: 04-27-2020
Technical Contact: Eric Wolfram
Item: 002
Ballot: E33.01 (21-01)
Status: Will Reballot Item
Item: 001
Ballot: E33.01 (21-01)
Status: Will Reballot Item