Different Types of Timber Grading

Topics Covered

Background

Types of Timber Grading

Background

Timber grading is the process by which timber is sorted into groups with ideally, similar appearance or structural properties in each group. Inevitably there is a range of properties within a group and significant overlap in properties between the groups.

Timber is specified by its grade, so it is important to understand the terms used in grading, and the implied properties and characteristics of each grade.

The sorting of appearance products is quite different to the sorting used for structural products. The two different set of criteria are treated separately in this section. As there may be cases where the timber has both appearance characteristics and structural properties, it is important that all users of timber understand the implications of both types of grades.

Types of Timber Grading

•        Appearance grading

•        Structural grading

•        Visual stress grading

•        Machine stress grading

•        Machine proof grading

•        In-grade testing

•        Stress grades

•        Quality control

Source: The Forest and Wood Products Research and Development Corporation

For more information on this source please visit The Forest and Wood Products Research and Development Corporation

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Wavin. (2017, July 14). Different Types of Timber Grading. AZoBuild. Retrieved on September 21, 2023 from https://www.azobuild.com/article.aspx?ArticleID=7969.

  • MLA

    Wavin. "Different Types of Timber Grading". AZoBuild. 21 September 2023. <https://www.azobuild.com/article.aspx?ArticleID=7969>.

  • Chicago

    Wavin. "Different Types of Timber Grading". AZoBuild. https://www.azobuild.com/article.aspx?ArticleID=7969. (accessed September 21, 2023).

  • Harvard

    Wavin. 2017. Different Types of Timber Grading. AZoBuild, viewed 21 September 2023, https://www.azobuild.com/article.aspx?ArticleID=7969.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type
Submit