Which timber group is best for high-quality furniture?

Group I is recommended for high-grade furniture due to its superior strength, durability, and dimensional stability (Clause 4.2.1).

What properties are used to classify the timbers in this standard?

Classification is based on strength, hardness, dimensional stability (retention of shape), workability, and finishing characteristics (Clause 4.1).

Is Mango wood suitable for furniture according to this standard?

Yes, Mango (Mangifera indica) is listed as a Group III timber, suitable for more economical classes of furniture and common articles (Annex A).

What is the reference timber used for comparing properties?

Teak (Tectona grandis) is used as the standard for comparison, with its suitability indices for various properties generally set to 100 (Annex B).

IS 13622

: 1993

Indian timbers for furniture and cabinets- Classification

CurrentSpecializedSpecificationBIMMaterials Science · Timber and Timber Stores

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This standard classifies Indian timbers into three groups (I, II, and III) based on their suitability for making furniture and cabinets. The classification considers key properties like strength, hardness, stability, and workability to guide the selection of appropriate wood species for different grades of furniture.

Indian timbers for furniture and cabinets- Classification

Quick Reference Values

Reference Species for Suitability IndexTeak (Tectona grandis) is the reference, with most indices set to 100

Example of Group I TimberTeak (Tectona grandis), Rosewood (Dalbergia latifolia)

Example of Group II TimberWhite Cedar (Dysoxylum malabaricum), Sissoo (Dalbergia sissoo)

Example of Group III TimberMango (Mangifera indica), Kadam (Anthocephalus chinensis)

Practical Notes

Group I timbers (e.g., Teak) are premium choices for high-end, durable furniture, while Group III timbers (e.g., Mango) are economical for general-purpose items.

The 'Suitability Index' in Annex B is a crucial comparative tool, with Teak used as the benchmark (index = 100).

This classification assumes the timber is properly seasoned as per IS 1141; using unseasoned wood will lead to poor performance regardless of its group.