wooden beds, Part 1: For use with mattresses

IS 7259 Part 1 — Scope Summary

• Scope: Covers specifications for block boards and plywood for general purposes.
• Key References:
  • Definitions per IS 4415-1967.
  • Tolerances on overall dimensions: ±10 mm (Clause 5.2).
  • Paints, enamels, polish, varnish must comply with relevant IS standards (Clause 4.9).
• Related Standards:
  • Specifications for block boards, plywood, commercial timbers, moisture content limits.
  • Preservation of timber and adhesives like cold setting casein glue.
  • Wood screws specifications.

Important Tolerance Table (Clause 5.2)

Paint & Finish Requirements (Clause 4.9)

• Must conform to relevant IS codes for:
  • Air-drying finishes.
  • Stoving finishes.

Diagram: Scope Overview

graph TD
A[IS 7259 Part 1: Scope] --> B[Block Boards & Plywood Specs]
A --> C[Dimension Tolerances ±10 mm]
A --> D[Paint & Finish Standards]
A --> E[Referenced IS Codes]
E --> F[IS 4415 Definitions]
E --> G[Timber & Glue Specs]

This ensures quality, dimensional accuracy, and durability of block boards and plywood under the standard.

IS 7259 Part 1 - Definitions & Key Specifications

• Definitions (Clause 2.1):
  Refer to IS 4415-1967 for all timber-related definitions used in IS 7259.

• Paints and Finishes (Clause 4.9):
  Must comply with relevant IS standards for air-drying and stoving finishes (e.g., IS 2932 for wood finishes).

• Dimensional Tolerances (Clause 5.2):
  Overall dimensions tolerance: ±10 mm.

• Related Standards for Timber & Plywood:

  • IS 1659: Specification for block boards
  • IS 303: Specification for plywood (general purpose)
  • IS 399: Classification of commercial timbers
  • IS 2380: Maximum permissible moisture content
  • IS 1734: Specification for out size timbers
  • IS 401: Code of practice for timber preservation
  • IS 848: Specification for cold setting casein glue
  • IS 1367: Specification for wood screws

Summary Table: Dimensional Tolerance

flowchart TD
    A[IS 7259 Part 1] --> B[Definitions]
    B --> C[IS 4415-1967]
    A --> D[Paints & Finishes]
    D --> E[Relevant IS Standards]
    A --> F[Dimensional Tolerances]
    F --> G[±10 mm]
    A --> H[Related Standards]
    H --> I[Block Boards (IS 1659)]
    H --> J[Plywood (IS 303)]
    H --> K[Timber Classification (IS 399)]
    H --> L[Moisture Content (IS 2380)]
    H --> M[Timber Preservation (IS 401)]
    H --> N[Glue (IS 848)]
    H --> O[Wood Screws (IS 1367)]

For detailed design or material specs, always cross-check with the referenced IS codes.

IS 7259 Part 1: Key Materials Specifications and References

1. Paints, Enamels, Polish, and Varnish (Clause 4.9):

• Must conform to relevant Indian Standards for air-drying and stoving finishes.
• Ensure compatibility with timber and environment.

2. Plywood (Clause 4.4):

• Plywood shall conform to IS 303:1989 (Specification for plywood for general purposes, 3rd revision).

3. Tolerances (Clause 5.2):

• Overall dimension tolerance: ±10 mm.

4. Resistance to Marking by Liquids (Clause 9.5):

• Test as per IS 5807 (Part 4)-1975.
• Minimum qualifying average rating as per clause 8 of IS 5807 (Part 4)-1975.

Related Indian Standards for Timber Materials:

Summary Table of Material Requirements

This ensures timber materials and finishes used in construction meet quality, durability, and dimensional accuracy as per IS 7259 Part 1.

IS 7259 Part 1: Components - Key Specifications & Formulas

1. General Requirements (Clause 10.1)

• Components must comply with dimensional tolerances and material specifications.
• Ensure compatibility with screws and adhesives as per referenced IS codes.

2. Dimensional Tolerances (Clause 5.2)

• Overall dimensions tolerance: ±10 mm.
• Critical for fitting and assembly accuracy.

3. Screws (Clause 1.6)

• Use slotted countersunk and raised countersunk head screws.
• Diameter range: 1.6 mm to 20 mm.
• Follow IS specifications for mechanical properties and dimensions.

4. Paint & Finishes (Clause 4.9)

• Paints, enamels, polish, and varnish must conform to relevant IS standards.
• Suitable for air-drying and stoving finishes.

Additional References for Components:

Summary Table: Dimensional Tolerances

flowchart TD
    A[Components] --> B[Dimensions]
    A --> C[Screws]
    A --> D[Paint & Finishes]
    B --> E[Tolerance ±10 mm]
    C --> F[Slotted Countersunk Screws (1.6-20 mm)]
    D --> G[Conform to IS Paint Standards]

For detailed design, always refer to the exact IS clauses and cross-reference related IS codes for screws, adhesives, and finishing materials.

IS 7259 Part 1 – Dimensions and Tolerances for Wooden Beds

Key Specifications (Clause 5.1)

Tolerances (Clause 5.2 & 5.3)

• Overall dimension tolerance: ±10 mm
• Rectangularity tolerance: ±5 mm between diagonals of the wooden bed (ensures squareness)

Summary Table for Tolerances

Notes:

• Dimensions refer to the external overall size of the bed.
• Rectangularity ensures the bed frame is not skewed, critical for stability.
• Dimensions comply with ergonomic standards for comfort and usability.

graph LR
A[Bed Dimensions] --> B[Height: 450 mm]
A --> C[Length: 1900-2000 mm]
A --> D[Width: Single=910 mm, Double=1525-1830 mm]
E[Tolerances] --> F[Overall: ±10 mm]
E --> G[Rectangularity: ±5 mm diagonal difference]

This concise summary aligns with IS 7259 Part 1 for bed manufacturing and quality control.

IS 7259 Part 1 (1988) - Construction & Assembly Key Points

Assembly (Clause 7.1)

• Components joined using bed fittings, bolts, nuts, or screws.
• Pilot holes must be drilled before driving screws.
• Screws should be dipped in glue for better adhesion.
• Joinery details must conform to IS 3845-1966 (code of practice for joints in wooden furniture).

Finishing (Clause 4.9)

• Paints, enamels, polish, varnish must conform to relevant IS standards for:
  • Air-drying finishes
  • Stoving finishes

Packaging & Knocked Down Supply (Clause 10.2)

• Wooden beds can be supplied in knocked down condition.
• Manufacturer must provide complete assembly instructions and pack components in wooden crates with waterproof wrapping.

Dimensional Tolerances (Clause 5.2)

• Overall dimensions tolerance: ±10 mm

Reference Specifications & Codes

• IS 3845-1966: Joinery details
• IS for block boards, plywood, commercial timbers, moisture content, wood screws, cold setting casein glue
• Codes for finishing and preservation of timber

Summary Table: Assembly Requirements

flowchart TD
    A[Wood Components] --> B[Drill Pilot Holes]
    B --> C[Dip Screws in Glue]
    C --> D[Drive Screws / Fix Bolts & Nuts]
    D --> E[Assembled Bed Frame]
    E --> F[Apply Finishing (Paint/Polish)]
    F --> G[Pack in Waterproof Crates if Knocked Down]

This ensures durable, precise, and quality assembly conforming to IS standards.

IS 7259 Part 1: Joinery and Fastening Key Points

Joinery Methods (Clause 7.1)

• Components assembled using bed fittings, bolts & nuts, screws.
• Pilot holes must be drilled before driving screws.
• Screws should be dipped in glue for better adhesion.
• Joinery details must conform to IS 3845-1966 (Code of practice for joints in wooden furniture).

Adhesives (Clause 4.7)

• Use adhesives conforming to:
  • IS 848-1957 (Casein glue for wood)
  • IS 849-1957

Fastening Specifications

• Screws: Use as per IS 2552 (Wood screws specification).
• Bolts and nuts: Must be securely fixed under pressure.
• Pilot hole diameter typically 70-80% of screw root diameter to avoid splitting.

Assembly for Knocked-Down Furniture (Clause 10.2)

• Components should be pre-prepared for quick joining.
• Supply includes illustrated assembly instructions.
• Pack components in wooden crates with waterproof wrapping.

Typical Pilot Hole Diameter Formula:

[ d_{pilot} = 0.7 \times d_{screw} ]

Summary Table:

flowchart TD
    A[Wood Components] --> B[Drill Pilot Holes]
    B --> C[Apply Glue on Screws]
    C --> D[Drive Screws / Fix Bolts & Nuts]
    D --> E[Assemble Bed Components]
    E --> F[Apply Finishing (Paint/Polish)]

For detailed joint types and dimensions, refer to IS 3845-1966.

IS 7259 Part 1 - Finishing Key Points

Finishing Methods (Clause 8.1)

• Surfaces shall be finished by:
  • Waxing
  • French polishing
  • Varnishing
  • Painting
• Application must conform to:
  • IS 2338 (Part 1 & 2) - 1968
• Clear lacquer, melamine resin-based paint, or polyurethane paint must follow manufacturer’s instructions.

Performance Requirements (Clause 4.9)

• Paints, enamels, polish, and varnish must comply with relevant Indian Standards for:
  • Air-drying finishes
  • Stoving finishes

Related Standards for Finishing

• IS 2046-1969: Decorative plastic laminates
• Code of Practice for Finishing of Wood and Wood-Based Materials:
  • Part 1: Operations and workmanship
  • Part 2: Schedules
• Test Methods for finishes include resistance to:
  • Dry heat
  • Wet heat
  • Oils and fats
  • Liquids
  • Mechanical damage

Summary Table of Finish Types and Standards

flowchart LR
    A[Wood Surface] --> B[Finishing Method]
    B --> C{Type}
    C --> D[Waxing]
    C --> E[French Polishing]
    C --> F[Varnishing]
    C --> G[Painting]
    G --> H[Clear Lacquer / Melamine / PU]
    B --> I[Conform to IS 2338]
    I --> J[Performance Tests]
    J --> K[Dry Heat]
    J --> L[Wet Heat]
    J --> M[Oils & Fats

IS 7259 Part 1 — Performance Requirements Summary

1. General Performance (Clause 10.1 & 10.1.1)

• Products must meet quality and performance criteria as per the standard.
• Compliance is verified through certificates or declarations submitted for ECO Mark certification.

2. Specific Performance Requirements (Clause 10.2)

• Products must satisfy ECO Mark specific clauses.
• Documentary evidence is mandatory for BIS ECO Mark approval.

3. Finishing Performance (Clause 8.1 & 9)

• Surface finishes include:
  • Waxing
  • French polishing
  • Varnishing
  • Painting (clear lacquer, melamine resin-based paint, polyurethane paint)
• Application must follow:
  • IS 2338 (Part 1 & 2) - 1968
  • Manufacturer’s instructions for paint application.

Key Specifications Table (Summary)

Performance Verification Flow

flowchart TD
    A[Manufacture Product] --> B[Apply Finishing as per IS 2338]
    B --> C[Check Quality & Performance per IS 7259]
    C --> D{Conforms to ECO Mark?}
    D -- Yes --> E[Submit Certificate/Declaration to BIS]
    D -- No --> F[Rework Product]

For detailed formulas or test methods, refer to IS 2338 for finishing and IS 7259 for performance tests.

IS 7259 Part 1: Additional Requirements for ECO Mark

Key Specifications for ECO Mark (Clause 10 & related)

• Timber Source (Clause 4.6.1):
  Only timber species per IS 13622:1993 from non-natural forests (industrial/social forestry plantations, shade trees from tea/coffee estates) are permitted.

• Particle Board (Clause 4.1):
  For ECO Mark, particle boards must comply with IS 3087:1985 (Specification for particle boards).

• Medium Density Fibreboard (Clause 4.5):
  Must conform to IS 12406:1988 (Specification for medium density fibreboards for general purposes).

Manufacturer's Responsibility (Clause 10.2)

• Provide documentary evidence (certificate/declaration) confirming conformity to ECO Mark requirements to BIS.

Summary Table

This ensures sustainable sourcing and eco-friendly manufacturing for wooden beds under ECO Mark certification.

Marking Specifications in IS 7259 Part 1

• Resistance to Marking by Liquids (Clause 9.5):
  Tested as per IS 5807 (Part 4)-1975.

  • Minimum qualifying average rating must meet Clause 8 of IS 5807 (Part 4)-1975.

• Resistance to Marking by Oils and Fats (Clause 9.4):
  Tested as per IS 5807 (Part 3)-1971.

  • Test results must comply with Clauses 5 and 6 of IS 5807 (Part 3)-1971.

• Standard Mark (Clause 11.1.1):

  • Beds may carry the BIS Standard Mark, indicating conformity to the standard under BIS supervision.
  • Use of this mark is regulated by the Bureau of Indian Standards Act 1986.

• Additional Note:
  For ECO Mark compliance, blockboards should meet IS 1659:1990 requirements.

Summary Table for Marking Resistance Tests

If you need detailed test procedures or rating scales from IS 5807, please specify.

IS 7259 Part 1 - Information to be Supplied by the Purchaser (Clause 12.1)

When placing an order, the purchaser must provide the following key information to the supplier:

• Species of Timber: Specify the species if the bed is non-teak.
• Type and Size of Bed: Clearly state the bed type (e.g., single, double) and dimensions.
• Finish and Color: Indicate the required finish (varnish, paint, polish) and color.
• Optional Fixtures: Mention any additional fixtures or accessories required.
• Alternative Methods: If alternative construction or finishing methods are acceptable, specify them explicitly.

Additional Notes:

• Beds may bear the Standard Mark as per BIS certification, ensuring compliance with quality and inspection norms.
• Plywood used must conform to IS 303:1989 for general purposes.
• For detailed specifications, consult the BIS regional offices listed in the standard.

flowchart TD
    A[Purchaser] -->|Supply Information| B[Supplier]
    B --> C{Order Details}
    C --> D[Species of Timber]
    C --> E[Type & Size of Bed]
    C --> F[Finish & Color]
    C --> G[Optional Fixtures]
    C --> H[Alternative Methods]

This ensures clarity and conformity in procurement and manufacturing.