Work Item
ASTM WK72759

Revision of C423-17 Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method


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.


Developed by Subcommittee: E33.01

Committee: E33

Staff Manager: Kelly Paul

Work Item Status

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