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CARMAN Timber Quality Sorting

Quality mark: CQ1

Allowed: Healthy knots up to 10 mm on the bottom side. Sharp-edged.

Not allowed: Unhealthy knots not allowed. Northern red oak, damage by insects, unhealthy sap, bark, rot, mechanic damage. Cracks - central, superficial, penetrating and frontal, larger than 5 cm. Knots in edges. Curvature except minor deflexions.

Centre tolerance: not allowed.

Sap tolerance: not allowed.

Quality mark: CQ2

Not allowed: Healthy knots up to 20 mm allowed. Lugs up to 5 mm. Sharp-edged.

Není povoleno: Northern red oak, damage by insects, unhealthy sap, bark, rot, mechanic damage. Cracks - central, superficial, penetrating and frontal, larger than 5 cm. Healthy knots larger than 20 mm. Knots in edges. Colouring on the better side. Curvature except minor deflexions.

Centre tolerance: Centre inrun is not allowed.

Sap tolerance: Not allowed.

Quality mark: CQ3

Not allowed: Healthy knots up to 25 mm on the better side. Unhealthy knots up to maximum 20 mm allowed. Knots up to 40mm on the bottom side. Sharp-edged.

Není povoleno: Cerium, Northern red oak, damage by insects, unhealthy sap, bark, rot, mechanic damage. Cracks - central, superficial, penetrating and frontal, larger than 5 cm. Knots larger than 40 mm on the bottom side. Healthy knots larger than 25mm on the better side. Knots in edges. Curvature except minor deflexions not allowed (max. 2mm per 1m).

Centre tolerance: In 20% of the delivery, centre inrun is allowed on one side.

Sap tolerance: Up to 40% of timber delivery, sap is allowed up to 1/3 of width.

Quality mark: CRustic I.

Allowed: Small colour differences, unhealthy knots up to 20mm, Healthy knots up to 60 mm by 1 piece per 1m, up to 40 mm without limits.

Not allowed: Cerium, Northern red oak, damage by insects, unhealthy sap, bark, rot, mechanic damage. Cracks - central, superficial, penetrating and frontal, larger than 5 cm. Healthy knots larger than 60 mm, Knots in edges. Larger curvature except minor deflexions – larger linear torsion than 0,5 % (2,5 cm per 5m).

Centre tolerance: Central crack up to max. 1/3 of the plank.

Sap tolerance: Up to 40% of timber delivery, sap is allowed up to 1/3 of width.

Quality mark: CRustic II.

Allowed: Unhealthy knots up to maximum 30 mm without limits, Healthy knots up to 80 mm allowed. Sharp-edged.

Not allowed: Cerium, Northern red oak, damage by insects, unhealthy sap, bark, rot, mechanic damage. Cracks - central, superficial, penetrating and frontal, larger than 5 cm. Healthy knots larger than 80 mm. Knots in edges. Larger curvature except minor deflexions – larger linear torsion than 0.5 % (2.5 cm per 5m).

Centre tolerance: In 20% of the delivery, centre inrun is allowed on one side.

Sap tolerance: Sap tolerance in 40% of timber delivery, sap is allowed up to 1/3 of width.

Quality mark: CRustic III.

Allowed: unhealthy knots without limits, healthy knots without limits. Centre – Central cracks. Damage by insects do 5%, rot up to 5cm2, bark inruns and wane of 2cm in depth up to 50% of the plank length. Cracks - central, superficial, penetrating. Knots in edges.

Not allowed: Cerium, Northern red oak, rot, mechanic damage. Frontal larger than 5 cm.

Centre tolerance: Centre allowed without limits.

Sap tolerance: Sap without limits.