Requirements
Requirements for the round log to be delivered
The legality and origin of the round log must be documented for at least 48 hours.
Round logs must not come from primeval forests or high conservation value forests, unless it is certified to the FSC FM standard.
Not cut from areas of social conflict.
Not felled from tropical or subtropical regions in a way where the felling area is replaced by plantation or other non-forestry uses.
Does not come from genetically modified forest plantations.
Quality requirements
Paged Eesti OÜ Quality Requirement
You can read more about the requirements here:
Quality requirements for birch veneer logs BC quality
| Veneer Log Requirements | |
|---|---|
| Quality Grade | ABC |
| Min Diameter Without Bark (cm) | 25 |
| Max Diameter at Stump End (cm) | 55 |
| Length (m) | 2.7; 3.0; 3.2; 3.3 + tolerance of 6cm |
| Branches | |
| Sound, dry, rotten, and fire branches | Not allowed |
| Dead Branches (Chinese mustache) | 120 degrees minimum, 3 per log |
| Curvature | |
| Simple Curvature | 1 cm per meter |
| Compound Curvature | Not allowed |
| Other Defects | |
| Eccentricity | 1/10 of the diameter |
| Red Heartwood | 1/3 of the diameter, max 12 cm |
| Juniper Beard (hair) and radial shakes | Not allowed |
| Medullary Splits | Allowed only if caused by drying on end surfaces (not extending to bark) |
| Side Splits, Ring Splits | Not allowed |
| Burl | Must be cut flush with the trunk; rot from burl must not extend into trunk wood |
| Spiral Growth | Max 0.4 turns per 3.5 meters |
| Foreign Objects, Storage Rot, Frost Crack, Discoloration, and Double Pith | Not allowed |
| Mechanical Damage | Must be outside the processing cylinder |
Quality requirements birch veneer logs A quality
| Quality Grade | Veneer Log | |
|---|---|---|
| Top End Diameter Without Bark (cm) | 16-21 | 22+ |
| Max Stump End Diameter (cm) | 55 | |
| Length (m) | 2.7; 3.0; 3.2; 3.3; 4.8 + minimum tolerance of 6 cm | |
| Branches (mm) | ||
| Sound Branch | 50 | 80 |
| Dry Branch | 40 | 40 |
| Rotten Branch | 40 | 40 |
| Fire Branch | Not allowed | Max 50 mm, 1 per log |
| Branch Stub Height | Up to 50 mm | |
| Branch Group | Allowed | |
| Branch diameter is measured on the log surface perpendicular to the log’s longitudinal axis. Branches under 10 mm are not considered defects. | ||
| Curvatures | ||
| Simple Curvature | 2.5 cm per meter | 3.5 cm per meter |
| Compound Curvature | Must not extend into the processing cylinder | |
| Other Defects | ||
| Red Heartwood | No restrictions | |
| End Surface Cracks (Medullary Split, Drying Crack) | Allowed if not extending to bark | |
| Side Crack | Not allowed in processing cylinder | |
| Ring Crack | Allowed up to 180° | |
| Sound Frost Crack (without rot) | Allowed on one side of the log. Length up to 6 cm, depth up to 1/10 of top diameter | |
| Burl | Must be cut flush with the trunk; burl-induced rot must not extend into trunk wood | |
| Foreign Objects, Storage Rot, Frost Crack, Discoloration, and Double Pith | Not allowed | |
| Mechanical Damage | Must remain outside the processing cylinder | |
