AS 1728-1975

Provides for specification of finish of surface by type-numbering sawn surfaces 1 to 5 for finishes from 'coarse' to 'smooth'; dressed surfaces 1 to 5 for finishes from 'dimensional dressing' to 'very smooth'; abraded surfaces 1 to 3 for finishes from 'medium' to 'very smooth'. The grading requirements for each type of surface are given in detail and are summarized in an appendix. A surface gauge is specified for measuring texture of sawn and dressed surfaces and the Standard also specifies a comparison sample for assessing abraded surfaces. Some suggested applications of the various types of surfaces are tabulated in a commentary that also gives 'perceptibility graphs' for the various types of surfaces when coated with finishes with differing degrees of gloss.