Only the portions provided of this standard are open for ballot. The revisions appear in red. This revision is to clarify all the requirements for the abrasion resistance test for gypsum and fiber reinforced cement panels, and to decouple this standard from any changes to the ASTM D4977 test method that is for granule adhesion for asphalt shingles. The reference to ASTM D4977/D4977M will be removed. The Surface Abrasion Test is incorporated in an annex completely identifying all the modifications to the ASTM Test Method D4977 required for appropriate testing of Gypsum Panel Products and Fiber-Reinforced Cement Panels.