What woodworking operations are covered by this standard?

Planing, sanding, shaping, turning, mortising, and boring (Clause 5).

How are the results graded?

Defects are graded on a 5-point scale, from Grade 1 (Excellent/Defect-free) to Grade 5 (Very Poor/Unusable) based on their severity (Clause 7 & Table 1).

What is the standard size of the finished test specimen?

The finished test specimen should be 6.25 x 11.25 x 90 cm (Clause 4.1).

IS 8292

: 1992

Evaluation of working quality of timber under different woodworking operations- Method of test

CurrentSpecializedTesting MethodMaterials Science · Timber and Timber Stores

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This standard specifies the method for evaluating the working quality of timber species under six different woodworking operations like planing, sanding, and boring. It provides a standardized procedure for testing and a five-grade system for classifying defects, enabling comparison of workability between different timbers.

Evaluation of working quality of timber under different woodworking operations- Method of test

Quick Reference Values

Target moisture content for testing12 %

Number of grades for defects5

Rough specimen size7.5 x 12.5 x 100 cm

Finished specimen size6.25 x 11.25 x 90 cm

Number of woodworking operations evaluated6

Practical Notes

The evaluation is primarily visual and qualitative, requiring experienced personnel for consistent grading of defects.

Controlling the moisture content of the timber specimen to the specified 12% is critical for achieving accurate and comparable results.

This test is essential for selecting appropriate timber species for high-finish applications like furniture, cabinetry, and architectural woodwork.