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- 04:01, 19 September 2025 H1 (hist | edit) [2,223 bytes] Peter wood (talk | contribs) (Created page with "H1 is a lower-level treatment used for timber that will be in a dry, indoor environment. The main goal of H1 treatment is to protect the timber from Lyctid borers (also known as powder post beetles) and, in some cases, other insects. The primary chemical used for H1 treatment is a boron compound, specifically disodium octaborate tetrahydrate. Here's why boron is the ideal chemical for H1: '''Low Hazard:''' Boron compounds are considered low in toxicity to mammals and...")
- 03:48, 19 September 2025 H-series (hist | edit) [2,569 bytes] Peter wood (talk | contribs) (Created page with "The H-series is a system for classifying the hazard level of timber, which determines the type and amount of preservative treatment required to protect it from decay and insects. The higher the number, the greater the hazard and the more protection the timber needs. This system is based on Australian Standards and is crucial for selecting the right timber for a specific application. H-series hazard levels: H1 (Inside, above ground): This is the lowest level of treatmen...")
- 22:34, 16 September 2025 F-grades (hist | edit) [27 bytes] Peter wood (talk | contribs) (Created page with "Visually Stress-Grading")
- 22:31, 16 September 2025 Visually Stress-Grading (hist | edit) [2,560 bytes] Peter wood (talk | contribs) (Created page with "In Australia, visually stress-graded structural timber is classified using F-grades (e.g., F5, F7, F11, F17, F22, F27). The “F” number represents the characteristic bending strength of the timber in megapascals (MPa), which is a measure of how much stress the timber can safely carry in structural applications. The grading is determined by visual inspection, considering features such as knots, slope of grain, checks, splits, and other natural growth characteristics th...") originally created as "Visually Stress-Graded"
- 22:27, 16 September 2025 Timber Grading Standards from around the World (hist | edit) [492 bytes] Peter wood (talk | contribs) (Created page with "Australia: * AS 1684 (framing). * AS 1720 (structural design). * AS 2796 (hardwood flooring). * AS/NZS 1748: Product requirements for mechanically stress-graded timber. * AS 2082: For visually stress-graded hardwood. * AS 2858: For visually stress-graded softwood. USA: * Wisconsin: ** [https://www.fpl.fs.usda.gov/documnts/fpltn/fpltn-200.pdf/ Technical Note 200] * Northeastern Lumber Manufacturers Association ** [https://www.nelma.org/the-grade-rule-book/ THE GRADE R...")
- 01:17, 16 September 2025 Knot Area Ratio (hist | edit) [2,232 bytes] Peter wood (talk | contribs) (Created page with "Knot Area Ratio (KAR) is a term used to describe the cross sectional area of a knot relative to the area surrounding, as a percentage. For grading purposes it is an estimate, calculated by adding the width of a knot on the top surface of a piece of timber, added to the width that knot on the bottom of the surface and then divided by 2.") Tag: Visual edit