Grading

New workshop aims to simplify American hardwood lumber grading
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The American Hardwood Export Council (AHEC) has created a video workshop to provide an explanation of the grading rules for American hardwood lumber.  The National Hardwood Lumber Association (NHLA) rules are still the national standard for the US hardwood industry and form the basis for grading of export lumber. They...
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Strength-reducing factors
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Understand the growth features in timber and timber degradation
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Strength properties
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Comprehend the strength properties of timber and its structure
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Principles of design with timber
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Understand structural considerations when designing with timber, which factors affect its strength, timber movement, differential movement and the resistance to abrasion and the impact it has.
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Timber strength grading and strength classes
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Acknowledge the different types of strength grading, regulations and standards timber has to go through in order for it to be approved for structural purposes.
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