GB/T 29897-2013
ActiveVisual grading rules for dimension lumber in light wood frame construction
轻型木结构用规格材目测分级规则
Application Summary AI generated
This standard specifies the visual grading rules for dimension lumber used in light wood frame construction, covering characteristics such as knots, slope of grain, checks, and splits that affect structural performance. It is applied in the Chinese construction industry for the on-site or mill-based sorting of sawn timber into structural grades for residential and light commercial wood-frame buildings. The standard ensures that lumber meets strength and appearance requirements for load-bearing walls, floors, and roof systems in light wood frame structures.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.