TS 3277

TS 3277 is a terminology standard prepared to name the visible defects of coniferous sawlogs and to provide common definitions for those defects. In log grading, sorting, and commercial assessment, consistent wording matters: the same defect should be understood in the same way by all parties. The standard focuses on terminology and definitions rather than prescribing a test method or acceptance limit.

Technical scope and context

The subject is the externally visible defects found in sawlogs from coniferous species. In general wood-technology practice, such defects may include knots, curvature, cracks, wounds, decay-related features, insect damage, or similar observable conditions. Terminology standards clarify how these features are described; they do not, by themselves, decide when a defect becomes acceptable or unacceptable. This gives producers, buyers, inspectors, and graders a shared vocabulary for discussing log quality.

Why this kind of standard matters

• Creates a common technical language for coniferous sawlog defects.
• Reduces ambiguity in grading and commercial communication.
• Organises terms used in wood technology and log terminology.
• As a terminology document, it is centred on concepts and definitions, not on numerical limits or test procedures.

TS 3277 is an equivalent document based on ISO 4474:1989. Its main value lies in standardising the names and meanings of defect-related terms; in practice, it is used alongside grading rules, quality specifications, and other technical documents relevant to wood and sawlogs.