Work Item
ASTM WK78191

Revision of D4460-97(2015) Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods


Rewrote scope to provide a clearer description of what this practice covers. Added referenced standards to Section 2 Reworded Section 4 (Significance and Use) for clarity. Reorganized Section 5 (Procedures) for clarity and added information for a clearer explanation for when to use each subsection Added a new section that briefly describes the development of standard deviation equations, or values, using propagation of errors. Reworked the example in the Appendix. The original example used the air void equation, which was essentially the same used in D3203. The VMA equation now replaces the air void equation.


Developed by Subcommittee: D04.94

Committee: D04

Staff Manager: Ashley Wiand

Work Item Status

Date Initiated: 08-31-2021

Technical Contact: Mary Stroup-Gardiner

Item: 006

Ballot: D04 (21-05)

Status: Ballot Item Approved