Timber species suitable for wooden packaging -

IS 6662 - Scope & Key Specifications Summary

Scope (Clause 6.1 & Annex B)

• Applies to selection of timber species for packing cases (shooks).
• Selection depends on:
  • Mass & cost of contents
  • Design & size of packing case
  • Nature/type of load
  • Handling & transportation mode
  • Storage duration (with/without contents)

Timber Availability Zones (Clause 5.6.2)

Timber Selection Guide (Table 6.1)

Note: Timber groups I to IV classify species by strength and suitability (I = strongest).

flowchart LR
    A[Mass of Contents] --> B{Load Type}
    B -->|Easy/Average| C[Select Timber Group from Easy Load Column]
    B -->|Difficult| D[Select Timber Group from Difficult Load Column]
    C --> E[Choose Timber Species from Group]
    D --> E

This concise framework ensures optimal timber selection for packing cases per IS 6662.

IS 6662: Definitions and Key Specifications for Wooden Packing Cases

1. Definitions Reference

• Definitions are as per:
  • IS 707 : 1976
  • IS 6703 : 1972
  • Additional definitions in IS 6662 clauses.

2. Comparative Suitability Coefficient for Timber (Clause 5.1.1)

• Timber species categorized by suitability for packing cases based on physical/mechanical properties.
• Groups:

• Note: Coefficients guide timber selection, not design dimensions.

3. Guide for Selection of Timber Species for Shooks (Clause 6.1, Table 1)

Summary:

• Use Group I timber for heavy/difficult loads.
• Use Group IV timber only for light/easy loads.
• Selection depends on load type, mass, transport, and storage.

flowchart TD
    A[Mass of Contents] --> B{Load Type}
    B -->|Easy/Average| C[Select Timber Group]
    B -->|Difficult| D[Select Timber Group]
    C -->|Up to 50 kg| E[Group IV]
    C -->|50-100 kg| F[Group III]
    C -->|100-150 kg| G[Group II]
    C -->|150-250 kg| H[Group I]
    D -->|Up to 50 kg| I[Group III]
    D -->|50-100 kg| J[Group II]
    D -->|100-150 kg| K[Group I]
    D -->|150-

IS 6662: Classification and Availability of Timbers

1. Classification of Timbers (Clause 5.1)

• Timbers in Annex A are classified by:
  • Suitability coefficients for packing, durability, etc.
  • Average density at 12% moisture content (kg/m³) — refer IS 399:1963.
• Durability groups influence preservative treatment (Clause 4.7).

2. Availability of Timbers (Clause 5.6 & 5.6.2)

• Timber availability is zone-wise, indicated in Annex A columns 10-14.
• Zones and their regions:

3. Preservative Treatment (Clause 4.7)

• Non-durable species and sapwood of durable species must be treated.
• Treatment follows IS 401:1982 standards.

Summary Table: Timber Availability Zones

| Zone    | Regions Covered                                   |
|---------|-------------------------------------------------|
| North   | J&K, HP, Punjab, Haryana, Delhi, UP, Rajasthan  |
| East    | NE states, WB, Bihar, Orissa, Andamans, Bhutan  |
| Central | MP, Vidarbha (MH), NE Andhra Pradesh            |
| West    | MH (except Vidarbha), Gujarat, NW Karnataka     |
| South   | TN, Kerala, AP (except Godavari delta), Karnataka (except NW) |

For detailed timber properties and suitability coefficients, refer Annex A of IS 6662 and IS 399:1963 for density values.

IS 6662: Key Details on Species of Timber for Packaging

1. Classification & Properties (Clause 5.1 & Annex A)

• Timbers are classified by Comparative Suitability Coefficients (with teak = 100).
• Average mass at 12% moisture content (kg/m³) is provided.
• Durability, treatability, refractoriness to seasoning, and workability are specified.
• Availability varies by Indian zones (North, East, Central, West, South).

2. Timber Grouping for Load Types (Clause 6.1, Table 1)

3. Preservative Treatment (Clause 4.7)

• Non-durable species and sapwood of durable species require treatment per IS 401:1982.

Example Timber from Annex A

IS 6662: Classification & Comparative Suitability Coefficients for Timber Packing Cases

1. Classification by Comparative Suitability Coefficient (Clause 5.1.1 & Annex A)

Timbers are classified into 4 groups based on suitability coefficient relative to teak (taken as 100):

• Higher coefficient → better physical & mechanical properties for packing cases.
• These coefficients are guidelines only, not design parameters.

2. Key Timber Properties from Annex A

3. Example Timber Suitability (Group I)

IS 6662: Selection of Materials for Wooden Packing Cases

Key Specifications & Tables

1. Comparative Suitability Coefficient (Clause 5.1.1)

• Timber species grouped by suitability (Teak = 100):
  • Group I: ≥ 95
  • Group II: 80 to <95
  • Group III: 70 to <80
  • Group IV: <70
• Higher coefficient = more suitable timber for packing cases (physical & mechanical properties).
• Note: Coefficients guide timber selection only, not design or dimensions.

2. Guide for Selection of Species by Mass & Load Type (Clause 6.1, Table 1)

3. Material Quality (Clause 4.4)

• Components must have:
  • Even thickness
  • Rectangular section
  • Square trimmed ends
  • Reasonably smooth surface

4. Availability Zones (Clause 5.6.2)

• Timber availability varies by zones (North, East, Central, West, South) covering specific Indian states.

Summary Diagram: Timber Selection Process

flowchart TD
    A[Determine Mass of Contents] --> B{Type of Load?}
    B -->|Easy/Average| C[Select Timber Group from Easy Load Column]
    B -->|Difficult| D[Select Timber Group from Difficult Load Column]
    C --> E[Choose Timber Species with Suitability Coefficient in Group]
    D --> E
    E --> F[Check Timber Availability by Zone]
    F --> G[Ensure Material Quality per Clause 4.4]

This concise framework ensures optimal timber selection balancing mechanical suitability, load type, content mass, and regional availability per IS 6662.

IS 6662: Delivery - Key Formulas, Tables & Specifications

1. Load Classification (Annex B)

• Easy Load (B-2.1): Low/moderate density, fully filling case, strong contents (e.g., boxed tools).
• Average Load (B-3.1): Moderately dense items needing moderate protection (e.g., metal cans, bottles cushioned).
• Difficult Load (B-4): Heavier or fragile requiring special care.

2. Timber Species Selection (Clause 6.1, Table 1)

• Timber Group I = Highest strength/durability.
• Selection depends on content mass & load type.

3. Packaging Notes

• Average load items can be packed directly or with intermediate packaging.
• Packaging must support all faces of the outer container moderately.

flowchart LR
    A[Content Mass] --> B{Load Type}
    B -->|Easy/Average| C[Select Timber Group from Table 1]
    B -->|Difficult| D[Select Higher Timber Group]
    C --> E[Use appropriate timber species]
    D --> E

Summary: Use Table 1 to select timber species based on content weight and load type for durable, safe delivery packing.

IS 6662: Timber Species Suitable for Wooden Packaging - Key Points

1. Selection Criteria (Clause 6.1 & Table 1)

• Selection depends on:
  • Mass of contents
  • Type of load (Easy/Average or Difficult)
  • Design, handling, transport, storage duration

2. Timber Grouping

• Group I: Highest strength and durability species
• Group IV: Lower strength species suitable for light loads

3. Additional Notes

• Use uniform species for the entire packing case.
• Refer to Annex A for detailed species list by group.
• Consider IS 401 (Preservation), IS 1141 (Seasoning), and IS 6703 (Packaging terms) for treatment and handling.

Summary Diagram of Selection Process

flowchart TD
    A[Determine Mass of Contents] --> B{Mass Range}
    B -->|Up to 50 kg| C[Group IV (Easy Load) / Group III (Difficult Load)]
    B -->|50-100 kg| D[Group III (Easy Load) / Group II (Difficult Load)]
    B -->|100-150 kg| E[Group II (Easy Load) / Group I (Difficult Load)]
    B -->|150-250 kg| F[Group I (Easy & Difficult Load)]
    C --> G[Select Timber Species from Group]
    D --> G
    E --> G
    F --> G

For detailed species list and treatment methods, consult Annex A and IS 401 & IS 1141.

IS 6662: Load Classification & Selection Guide for Wooden Packing Cases

Load Categories (Clause 1.1, 2.1, 3.1)

• Easy Load: Low/moderate density, fills case fully, strong shape (e.g., boxed articles, toolkits).
• Average Load: Moderately dense, needs moderate protection, may require intermediate packaging (e.g., metal cans, cushioned bottles).
• Difficult Load: Fragile, irregular shape, requires high protection (see Annex B for details).

Timber Group Selection (Clause 6.1, Table 1)

Notes:

• Group I = strongest timber species, suitable for heavy/difficult loads.
• Selection depends on mass, load type, case design, handling, transport, storage duration.

Summary Diagram

flowchart TD
    A[Load Type] -->|Easy| B[Select Timber Group (IV to I) by Mass]
    A -->|Average| B
    A -->|Difficult| C[Select Higher Timber Group (III to I)]
    B --> D[Mass ≤ 50: IV or III]
    B --> E[Mass 50-100: III or II]
    B --> F[Mass 100-150: II or I]
    B --> G[Mass 150-250: I]
    C --> F
    C --> G

This guide ensures proper timber species selection based on load characteristics and mass for safe, economical packing case design.

Committee Composition (IS 6662 - Annex C)

The Timber Stores Sectional Committee, CED 33 and the Wooden Containers Subcommittee, CED 33:2 are responsible for the standard’s formulation and revision. Key points:

• Chairman: Dr. A. N. Nayer
• Members: Experts from timber industries, research institutes (FRI, IIT), packaging, defense (DGQA, DRDO), and government bodies.
• Secretary: Shri R. S. Juneja, Deputy Director (Civil Engg), BIS

This multi-disciplinary committee ensures comprehensive coverage of timber packaging needs, quality control, and testing standards.

Key Specifications on Committee Composition

• Includes representatives from:
  • Timber industries & research
  • Packaging and shipping sectors
  • Government & defense organizations
  • Forest Research Institute (FRI) branches (Wood Preservation, Seasoning, Timber Mechanics)
• Ensures standards reflect practical, mechanical, and preservation aspects.

Additional Notes

• The committee composition is crucial for maintaining the Standard Mark under BIS rules.
• Continuous inspection/testing by BIS ensures compliance.

If you want details on comparative suitability coefficients or timber availability tables, please specify!