Criteria

Quality classes

A/B

Defective log

Length in metres (3.0; 4.0; 5.0; 6.0 m)

3.0 - 6.0

3.0 - 6.0

Over measure (min. + 10 cm, max + 25 cm)

10 cm

10 cm

Minimum diameter of thinner end in cm (log 4.0 -6.0 m)

14 cm

14 cm

Maximum diameter of thinner end in cm (log 3.0 m)

45 cm

45 cm

Maximum diameter of thinner end in cm (log 3.0 m)

35 cm

35 cm

Maximum allowed curvature per cm/m

< 1.5 cm/m

> 1.5 cm/m

Maximum allowed diameter of branch in cm

< 8 cm

> 8 cm

Colour defects/blue stains

Not allowed

Allowed

Hard and soft rot

Not allowed

Hard rot allowed

Curvature, distortion, other deformations

Not allowed

Surface cracks allowed

Radioactivity, chemical pollution, carbonised parts, foreign objects and particles, etc

Not allowed

Not allowed

Metal/foreign objects

Not allowed

Not allowed

Cracks (frost and drying cracks, etc)

Not allowed

Not allowed

Wood damage (e.g. breakage, storm and felling damages, big resin pockets, branching, soft rot, etc)

Not allowed

Not allowed

Bark beetle

Not allowed

Not allowed

 

For explanation:

 

  • Receipt of material has to be accompanied by a document certifying the origin or a conveyance document.
  • Defective logs are returned to the seller or purchased at previously agreed price.
  • Dirty and muddy logs are considered as defective logs.