Beispieldaten-Modus. Die gezeigten Beispielfirmen, Angebote und Anfragen sind fiktiv (KI-Bilder) und zählen nicht in die Statistik unten.
Visual grading and defects in sawn timber: softwood and hardwood
Lumber grading · Beginner
Knots, grain, pith, reaction wood, shake, wane, resin, stain and drying degrade; how visual rules and appearance grades work for softwood and hardwood; and how grading links to claims, documentation, sorting and price, with the limits of paywalled standards stated.
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- 1. Grading, defects and where they come from 9 min
- 2. Knots and grain deviations 10 min
- 3. Pith, reaction wood, shake, wane and resin 10 min
- 4. Stain, mould, decay and drying degrade 11 min
- 5. Reading a visual rule: softwood appearance grades 10 min
- 6. Hardwood grading: oak, beech, ash and colour defects 11 min
- 7. Claims, documentation, sorting, price and limits of this course 12 min
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