Similar International Standards
EN 1316-1:2012+A1:2014CEN (European Committee for Standardization), Europe
HighCurrent
Hardwood round timber — Qualitative classification — Part 1: Oak and Beech
Specifies qualitative grading of Oak and Beech logs for various uses, including veneer production.
JAS 1083MAFF (Ministry of Agriculture, Forestry and Fisheries), Japan
HighCurrent
Japanese Agricultural Standard for Logs
Provides a comprehensive grading system for logs based on species, dimensions, and defects for end uses including veneers.
EN 1316-2:2012CEN (European Committee for Standardization), Europe
MediumCurrent
Hardwood round timber — Qualitative classification — Part 2: Poplar
Similar grading principles as IS 15457 but specific to Poplar logs for veneer and other uses.
Key Differences
≠The IS code provides a single standard for various Indian species (e.g., Teak, Rosewood), whereas the European (EN) standards are published in separate parts for different species or species groups (e.g., EN 1316-1 for Oak/Beech, EN 1316-2 for Poplar).
≠IS 15457 uses a three-tier grading system (Grade I, II, III). In contrast, the EN standards use a four-class system (A, B, C, D) which is more granular and often includes specific sub-classes for veneer quality (e.g., 'Veneer' class).
≠The Indian standard is tailored to defects common in tropical hardwoods (e.g., specific types of borer holes, gum veins), while EN standards focus on defects prevalent in temperate hardwoods (e.g., frost cracks, specific types of rot).
≠Measurement of log size in IS 15457 is based on girth, a common practice in the Indian subcontinent. Most international standards, including the EN series, primarily use diameter for measurement and classification.
Key Similarities
≈All standards share the primary objective of classifying logs based on physical and visual characteristics to determine their value and suitability for slicing into decorative veneers.
≈Grading in both IS 15457 and its international counterparts is fundamentally based on a common set of criteria: log dimensions (length and girth/diameter), form (straightness/sweep), and the presence and severity of defects like knots, splits, decay, and grain deviation.
≈All standards require the physical marking of graded logs to identify their grade, dimensions, and often origin or lot number, ensuring traceability and clear communication in trade.
≈The concept of a 'veneerable portion' or a clear face/section of the log is central to all standards, recognizing that the highest value is derived from defect-free surfaces.