QUALITY DESCRIPTION

TYPE A

Allowed

  • Healthy knots with a diameter of 5 mm .;
  • Sort by color;
  • Plastering under the color of the shield.

Not allowed

  • Open knots;
  • Sapwood;
  • Mechanical defects;
  • Rot, cracks, discoloration.

TYPE B

Allowed

  • Healthy knots up to 25 mm in diameter;
  • Natural differences in color;
  • Sapwood up to 20% of the shield area;
  • Plastering under the color of the shield.

Not allowed

  • Open knots, cracks;
  • Mechanical defects;
  • Rot, cracks, discoloration.

TYPE C

Allowed

  • Healthy knots;
  • Tobacco knots up to 10 mm in diameter;
  • Open knots;
  • Sapwood;
  • Plastering under the color of the shield;
  • No color sorting.

Not allowed

  • Mechanical defects;
  • Rot, cracks, discoloration.

SPECIFICATION

type Spliced
species Oak
quality A/B
  glue  class D3/D4
thickness  18-45 mm.    
width 100-1200 mm.
length 1000-5000 mm.
type Spliced
species Oak
quality B/C
  glue  class D3/D4
thickness  18-45 mm.    
width 100-1200 mm.
length 1000-5000 mm.