This Malaysian Standard specifies a method of strength grading tropical hardwood timber visually for structural use. The timber shall at least be surface dry. For tropical hardwoods, the permissible limits of characteristics for a single visual strength grade of timber are specified, designated Select Structural Grade, Standard Structural Grade, Common Building Grade and Hardwood Structural Grade.
This Malaysian Standard applies to tropical hardwood timber graded both in Malaysia and
abroad for seasoned timber either rough sawn or dressed, preservative treated or not. Timber
imported from abroad shall be regraded in accordance to this Malaysian Standard before it is allowed to be used for structural application. Regrading is not needed if the timber is graded by a certified body that is approved by the grading authority in Malaysia, provided that it is not resawn into smaller sizes.
Where Malaysian Standards covering specific end use requirements specify permissible limits varyin