Grading Rules

Grading Rules

VENEER GRADES ACCORDING TO AUSTRALIAN AND NEW

VENEER GRADES ACCORDING TO AUSTRALIAN AND NEW Special thanks to the original source of  https://www.aciar.gov.au ZEALAND STANDARD AS/NZS 2269.0:2012 This standard provides minimum performance requirements and specifications for manufacturing structural plywood that are acceptable to users, specifiers, manufacturers and building authorities in Australia and New Zealand. The standard is applicable to …

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SVEZA Interior and Exterior Plywood grades Defects Part 37: Wood structure defects (swirly grain, burls)

SVEZA Interior and Exterior Plywood grades Defects Part 37: Wood structure defects (swirly grain, burls) http://baza.sveza.ru/eng/index.php?pid=2&pr=2&id=8&def_id=8&full=1 Swirly grain is twisted or irregular grain formation. Burls are local twists of annual rings caused by knots or inbarks. Swirly grain, bud traces, and burls are not measured. Their occurrence is considered as …

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SVEZA Interior and Exterior Plywood grades Defects Part 35:Waviness (sanded plywood), rough saw cut, ripple

SVEZA Interior and Exterior Plywood grades Defects Part 35:Waviness (sanded plywood), rough saw cut, ripple http://baza.sveza.ru/eng/index.php?pid=2&pr=2&def_id=37 Waviness is the surface irregularity in the form of alternating arched elevations and hollows. Rough saw cut is dense, not fully cut off woolly grain on the surface. Ripple is dense pitting along the …

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SVEZA Interior and Exterior Plywood grades Defects Part 32:Sound discoloration (streaks, streak traces)

SVEZA Interior and Exterior Plywood grades Defects Part 32: Sound discoloration (streaks, streak traces) Back Streaks are mottle looking like thin brown stripes of loose-texture wood located along the annual rings border. http://baza.sveza.ru/eng/index.php?pid=2&pr=2&id=14&def_id=14&full=1 Streak traces are bleached or darkish stripes at the veneer surface that are telegraphing streaks lying no …

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SVEZA Interior and Exterior Plywood grades Defects Part 32:Sound discoloration (mottling)

SVEZA Interior and Exterior Plywood grades Defects Part 32:Sound discoloration (mottling) http://baza.sveza.ru/eng/index.php?pid=2&pr=2&id=13&def_id=13&full=1 Sound discoloration (mottling) Back Mottling is a type of hardwood sap stain looking as spots and strips without wood softening. It occurs in growing trees, the color is similar to the heartwood. Mottling is measured by length, width, …

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