Summary of Proposed  Changes to PS 1  – 19 
March 2019 Ballot Draft  and June 2019 Standing Committee Meeting  
Item  Section  Description  of change  Justification  
1 Various  Add references to principles of ASTM D906 and 
D5266.  Wood failure testing and analysis needed reference to 
provide better description of methods  
2 Various  Revised test speed for glue bond test.  Based on a  PS 1 Bond Task Group recommendation  that 
considered changes to the bond test methods  
3 Table 8  Correct ed footnote (a) to be consistent with footnote 
(a) of Table 7 . 
Correct ed footnote (b)  - Panel strength axis shall be 
perpendicular to the framing unless otherwise noted  These are c orrecti ons 
4 Section 
6.2.2.4  Footnote not explained (point of max defl)  Footnote added as in previous edition  
5 Terms  Added note that minimum wall sheathing 
Performance Category  in IRC/IBC is 3/8 . Added terms 
for indents and depressions.  Reflects code provision for wall sheathing  and industry 
practices.  
 
6 Table 2  Footnote c  Update d reference to PS 2  
7 5.6.5  Section revised  to replace table with text  Editorial  format change  
8 5.8 D-D grade was added  for panels with butt -jointed 
centers in section 5.8.b  To make c onsist ent with other sheathing grades  
9 Appendix E  Revised Appendix  on Weights and Measures 
regulations  Creates reference to most current NIST Handbook  
10 Appendix F  Delete d Appendix on Environmental Attributes  Not germane to the standard  
11 Appendix G Revised Appendix on Formaldehyde regulations  Updated to most current regulations  
12 7.3 Some grademarking provisions may benefit from 
updating, especially considering inkjets  Revised section  
13 5.8.4  Reword ed requirement s for sanded sheathing . Added 
grading method for indents for touch sanded panels  Section revised   
14 Appendix C  Describe changes leading to PS 1 -19 Listed major changes made to this edition  
15 5.5.1  Added reference to section 5.8.7 to qualify alternate 
veneer thicknesses  Permits performance testing per  5.8.7 performance 
criteria for alternate thickness veneers  
16 7.2 & REF 
Pubs 
section  Add references to accreditation standards for ISO 
17025 , ISO 1 7020  and ISO 17065  Updated d efinition s for inspection and testing agency  
17  Table of 
Contents  Shorten ed Table of Contents to Primary Level only  Reduced excessive listing of subsections  
18 Table 10, 
App D  Add 9/16 C AT to tables . Add language  that other CATs 
are allowed.  Added reference to this common panel type and that 
other thicknesses are permitted  
19 Terms  and 
7.3 Added term for Sized for Spacing  Defined this common labeling term  
20 5.10.1  Length and width measurement methods clarified  
 Provides additional guidance to common industry method  
21 5.10.2  Clarified measurement point for panel thickness  Provides additional guidance to common industry method  
22 Terms  Added terms for depression and intents  Defined term and grading methods within the standard  
23 3 Updated reference standards to current years  Routine update  
24 4.2.1, 4.2.2  Moved definitions for Exposure 1 and Exterior bond 
classifications into the Terminology section  Moves definitions into more logical location  
25 5.4 Added grading provision for depressions  Addresses industry grading procedure  
26 5.6.3  Revised description of underlayment  Eliminates unnecessary description  
27 5.8.5  Revised section heading  Editorial change  
28 6.1.3.2, 
6.1.3.3  Reference the principles of ASTM D906 and ASTM 
D5266  Provides clarification on principles of testing methods  
29 7.1  Added statement regarding permanence of the 
trademark ink  Clarifies intent of trademark ink quality  
30  Terms and 
5.4.2.4  Added term for “compound boat ” patch and rev ised 
the A -grade crite ria to permit boat and compound 
boat patches with end r adii to 3/8” or less.   Base d on a rese arch stud y, patches with  rounded ends 
(with r adii of 3/8 ” or less) were found to perform  suitably