Timber Sizes and Tolerances
Date Published
1 November 2023
Document Type
Category
Theme
Author
Edinburgh Napier University
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Summary
While timber can be any size permitted by the raw material’s dimensions, there are customary sizes that are most widely available, most often used, and suitable for the vast majority of uses.
Whatever its size, structural timber is available in two dimensional tolerances:
• Tolerance Class 1, with a sawn edge
• Tolerance Class 2, with a planed or machined edge.
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