Quality requirements

We apply quality and general supply requirements to all purchased and sold round timber

PJ – Sawlogs
Wood species: S (spruce), P (pine)
St. – Large, Vd. – Medium, Sm. – Small
Diameter:
  • Sm. – 14-18.9 cm;
  • Vd. / St. – 19-50 cm, maximum diameter – 50 cm overbark.
Curvature: normal curvature ≤1.5% (1.5 cm/m).
Branches: mature, immature, healthy ≤6 cm.
Slope: ≤2.5 cm/m.
Lengths:
  • 4.8 m with ≥ 10-cm allowance;
  • 4.8 m with <10 cm will be reclassified to the “4.8 m (short)” assortment;
  • 4.8 m with <5 cm will be reclassified to the “Slabwood” assortment.
Measurement: 4.8 m long logs are measured by the group measurement method, using a coefficient of 0.62.
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • hard or soft rot;
  • cracks;
  • insect damage;
  • staining;
  • dead wood;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

PJ – Sawlogs
Wood species: S (spruce), P (pine)
Diameter: 14-50 cm, maximum diameter – 50 cm overbark.
Curvature: normal curvature ≤4.0 % (4.0 cm/m).
Slope: ≤4 cm/m.
Lengths:
  • 4.8 m with ≥ 10-cm allowance;
  • 4.8 m with <10 cm will be reclassified to the “4.8 m (short)” assortment;
  • 4.8 m with <5 cm will be reclassified to the “Slabwood” assortment.
Measurement: 4.8 m long logs are measured by the group measurement method, using a coefficient of 0.62.
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • soft rot;
  • cracks;
  • insect damage;
  • staining;
  • dead wood;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

PJ – Sawlogs
Wood species: S (spruce), P (pine)
St. – Large, Vd. – Medium, Sm. – Small (Sm. class assortments are not divided into quality classes)
Diameter: 14-50 cm, maximum diameter – 50 cm overbark.
Curvature: normal curvature ≤4.0 % (4.0 cm/m).
Slope: ≤4 cm/m.
Lengths:
  • 4.8 m with ≥ 10-cm allowance;
  • 4.8 m with <10 cm will be reclassified to the “4.8 m (short)” assortment;
  • 4.8 m with <5 cm will be reclassified to the “Slabwood” assortment.
Measurement: 4.8 m long logs are measured by the group measurement method, using a coefficient of 0.62.
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • soft rot;
  • cracks;
  • insect damage;
  • staining;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

PJ – Sawlogs
Wood species: P (pine)
St. – Large, Vd. – Medium, Sm. – Small
(Sm. class assortments are not divided into quality classes)
Str. >50.1 cm – Thick (log assortments in the Sm. size class are not graded by quality)
Diameter:
  • Sm. – 11-17.9 cm;
  • Vd. – 18-39.9 cm;
  • St. – 40-50 cm, maximum diameter – 50 cm overbark;
  • Str. – >50,1 cm.
Curvature: normal curvature ≤2.0% (2.0cm/m).
Slope: ≤2.5 cm/m.
Lengths: 3.0 m with an allowance of at least 7 cm.
Measurement:
  • 3.0 m long logs are measured by the unit measurement method through an automated measuring line.
  • all logs with a top-end diameter greater than 50.1 cm (with bark) are reclassified into the “Thick Sawn Logs” assortment (TR-SP-2.4 Str.); in such cases, the maximum admissible small-end diameter is 45 cm (individual measurement applies).
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • hard or soft rot;
  • cracks;
  • insect damage;
  • staining;
  • dead wood;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

PJ – Sawlogs
Wood species: B (birch), A (aspen), B (black alder), L (linden), P (poplar)
Diameter: 14-50 cm, maximum diameter – 50 cm overbark.
Curvature: normal curvature ≤4.0 % (4.0 cm/m).
Slope: ≤4 cm/m.
Lengths:
  • 4.8 m with ≥ 10-cm allowance;
  • 4.8 m with <10 cm will be reclassified to the “4.8 m (short)” assortment;
  • 4.8 m with <5 cm will be reclassified to the “Slabwood” assortment.
Measurement: 4.8 m long logs are measured by the group measurement method, using a coefficient of 0.62.
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • soft rot;
  • cracks;
  • insect damage;
  • staining;
  • dead wood;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

Wood species: S (spruce), P (pine), B (birch), B (black alder), A (aspen), L (linden), P (poplar), etc.
TR – Pallet logs, SP – Conifer logs, LP – Deciduous logs
Diameter:
  • minimum small-end – 14 cm, maximum butt-end – 50 cm;
  • logs with a top-end diameter greater than 50.1 cm (with bark) are reclassified into the “Thick Sawn Logs” assortment (TR-LP/SP-2.4 Str.). Maximum diameter is not limited.
Curvature: normal curvature permitted up to 5.0% (5.0 cm/m).
Lengths: 2.4 m with an allowance of at least 7 cm.
Measurement:
  • conifer pallet logs: group measurement method, using a coefficient of 0.62;
  • deciduous pallet logs: group measurement method, using a coefficient of 0.58;
  • thick sawn logs (TR-SP/LP-2.4 Str.) with top-end diameter ≥ 50.1 cm (with bark): measured by individual measurement method. The maximum admissible diameter at the small end is 45 cm.
Not allowed*:
  • complex curvature;
  • metal or other foreign bodies;
  • soft rot;
  • cracks;
  • insect damage;
  • staining;
  • rotting branches;
  • poor pruning;
  • logs with former or existing double branching;
  • mechanical damage;
  • old-cut logs with discolouration and/or fungal damage, soot, charring, radioactivity;
  • the wood surface must not be contaminated with rocks or minerals.
*you can find visuals of the defects on www.juodeliaiperka.lt in the “Quality requirements/Wood defects” section.

When wood is purchased with delivery:
  • Individual wood assortments (wood with different pricing) may not be mixed in the same rung;
  • 3.0 m P (pine) logs are only accepted with delivery and full timber lorries, without mixing them with other assortments;
  • 3.0 m P (pine) thick logs (Str. (Thick > 50.1 cm)) must not be mixed and must be supplied in separate bundles (“rungs”).
When wood is purchased at the Forest Warehouse:
  • Individual wood assortments (wood with different pricing) may not be mixed in the same rung;
  • The minimum amount of one sold assortment (wood with different pricing) is 15 m³. The total minimum amount of wood sold is 30 m³.
When non-certified wood is sold:
  • The seller must submit all wood purchase documents, including confirmation of ownership and the logging permit (certified copy), and must specify the contractor and method of logging (manual/mechanical).

When wood is purchased with delivery:
  • Separate wood assortments (wood with different pricing) and thick sawn logs (Str. > 50.1 cm) must not be mixed in the same bundle (“rungs”).
When wood is purchased at the Forest Warehouse:
  • Separate wood assortments (wood with different pricing) and thick sawn logs (Str. > 50.1 cm) must not be mixed in the same bundle (“rungs”);
  • The minimum amount of one sold assortment (wood with different pricing) is 15 m³. The total minimum amount of wood sold is 30 m³.
When non-certified wood is sold:
  • The seller must submit all wood purchase documents, including confirmation of ownership and the logging permit (certified copy), and must specify the contractor and method of logging (manual/mechanical).