Veneered Particle Boards -Specification

IS 3097: Scope Summary

• Scope: IS 3097 governs the specifications, testing, and quality requirements for precast concrete pipes.
• Reference Standards: Definitions and terms align with IS 707 (Precast Concrete Pipes) and IS 3087 (Concrete Pipes and Manholes).
• Rounding Off: Final test or analysis results must be rounded per IS 2:1960 rules, retaining significant figures equal to the specified value.
• Test Specimen: Clause 9.1 details specimen preparation for testing (e.g., dimensions, curing).
• Cross-References: Annex A lists related standards; users should apply the latest editions for compliance.

Key Points for Scope

This scope ensures uniformity in testing and quality of precast concrete pipes under IS 3097.

IS 3097 References: Key Points & Specifications

• Referenced Standards: IS 3097 incorporates provisions from various Indian Standards listed in Annex A, which are integral to compliance:

  IS No.	Title
  IS 303:1989	Specification for plywood for general purposes
  IS 707:1976	Glossary of terms applicable to timber technology
  IS 1328:1996	Veneered decorative plywood - Specification
  IS 1659:2004	Block boards - Specification
  IS 2380 (Parts 1,4,13,16,17):1977	Methods of test for wood particle boards and other lignocellulosic materials
  IS 3087:2005	Particle boards - Specification
  IS 4905:1968	Methods for random sampling

• Rounding Off: Follow IS 2:1960 for rounding test or calculation results, retaining significant figures as per the specified value.

• Definitions: Use definitions from IS 707 and IS 3087.

• Certification Marking: Governed by BIS Act 1986; licensing details available from BIS.

Important Notes:

• Always verify the latest editions of referenced standards.
• The standards cover plywood, block boards, particle boards, and testing methods.

Example: Rounding off rule (IS 2:1960)

flowchart TD
    A[IS 3097 Standard] --> B[Annex A: Referenced IS Codes]
    B --> C[IS 303: Plywood]
    B --> D[IS 707: Timber Glossary]
    B --> E[IS 1328: Decorative Plywood]
    B --> F[IS 2380: Test Methods]
    B --> G[IS 3087: Particle Boards]
    B --> H[IS 4905: Sampling]

For detailed test methods, properties, and specifications, consult the individual IS codes listed.

IS 3097: Definitions & Designations Summary

• Definitions: IS 3097 refers to IS 707 and IS 3087 for all definitions related to veneered particle boards.

• Designation of Veneered Particle Boards (Clause 4.2, Table 1):

• Rounding Off (IS 2:1960): Final test or analysis values must be rounded off following IS 2:1960 rules, retaining significant figures consistent with the specified value.

Key Notes:

• Grades I and II indicate quality levels.
• Solid core vs. Tubular core refers to internal board structure.
• General purpose vs. Decorative indicates surface finish and intended use.

flowchart LR
    A[IS 3097 Definitions] --> B[IS 707 & IS 3087]
    C[Designation] --> D[Grade I or II]
    D --> E[Solid Core or Tubular Core]
    E --> F[General Purpose or Decorative]
    F --> G[Final Designation Code]

This structure helps classify veneered particle boards clearly per IS 3097.

IS 3097: Grades and Types of Veneered Particle Boards

1. Grades

• Grade I: Higher quality veneer and core.
• Grade II: Standard quality veneer and core.

2. Types (Clause 4.1.1)

3. Designation (Table 4.2)

Summary:

• Grades: I & II (quality levels)
• Types: 4 types based on core and veneer (solid/tubular & general/decorative)
• Designation: Combines grade, core type, and veneer purpose (e.g., SO GP-I)

This classification helps specify the particle board for intended structural or decorative applications.

IS 3097: Materials - Key Specifications & References

Materials covered: Mainly plywood, block boards, particle boards, and veneered decorative plywood.

Key Points from IS 3097:

• Test Specimens (Clause 9.1): Specimens must comply with preparation and conditioning as per IS 2380 (Part 1): 1977.

• Material Definitions: Refer IS 707: 1976 for timber and wood product terminology.

• Dimensional Accuracy: IS 303 (Part 2): 1977 specifies accuracy of board dimensions.

• Mechanical Properties: Static bending strength and long-term loading tests per IS 303 (Part 4 & 13): 1977.

• Water Absorption & Swelling: Determined as per IS 303 (Part 16 & 17): 1977 and IS 3087: 2005.

• Particle Boards: Specification and testing methods per IS 1659: 2004 and IS 2380 series.

Important Rounding Rule

• Final test values must be rounded as per IS 2:1960 maintaining the same significant digits as specified.

Summary Table of Referenced Standards

Typical Formula: Bending Strength (Modulus of Rupture)

[ \sigma = \frac{3PL}{2bd^2} ]

• (P) = Load at failure (N)
• (L) = Span length (mm)
• (b) = Width of specimen (mm)
• (d) = Thickness of specimen (mm)

This concise framework ensures materials tested and certified under IS 3097 meet quality and performance standards.

IS 3097: Manufacture - Key Specifications & Test Methods

1. Test Specimen (Clause 9.1)

• Test results shall be rounded per IS 2:1960 rules, retaining significant figures equal to the specified value.

2. Edge Straightness & Squareness (Annex C, Clauses 7.4 & 9.1)

• Edge Straightness:
  • Use a straight edge equal to board length.
  • Measure maximum gap (nearest mm) between board edge and straight edge.
• Squareness:
  • Use a 1200 mm × 1200 mm square.
  • Measure max gap between board edge and square arm.

3. BIS Certification Marking (Clause 11.2.1)

• Use of Standard Mark governed by BIS Act, 1986.
• Licensing details available from BIS.

4. Referenced IS Standards for Manufacture & Testing:

Summary Table: Edge Straightness & Squareness Test

For precise manufacture compliance, follow referenced IS methods for conditioning, sampling, and testing.
For licensing and marking, consult BIS directly.

flowchart TD
    A[Manufacture Process] --> B[Test Specimen Preparation]
    B --> C[Edge Straightness Test]
    B --> D[Squareness Test]
    C --> E{Measure Max Gap}
    D --> E
    E --> F[Compare with Tolerance]
    F --> G{Pass/Fail}

Note: For detailed test procedures and dimensional tolerances, refer to the respective IS standards listed above.

IS 3097: Dimensions and Tolerances for Veneered Particle Boards

Key Tolerances (Clause 7.4)

• Edge straightness and squareness are tested as per Annex C.
• Thickness uniformity must comply within ±5% tolerance (Clause 6.3.2).
• All measurements should be rounded off according to IS 2:1960 rules.

Notes:

• The tolerances ensure dimensional accuracy for finished boards.
• Squareness tolerance means the deviation from 90° angle should not exceed 2 mm per 1 m length.

flowchart LR
    A[Finished Board] --> B{Check Dimensions}
    B -->|Length| C[+6/-0 mm]
    B -->|Width| D[+3/-0 mm]
    B -->|Thickness| E[±5%]
    B -->|Edge Straightness| F[2 mm / 1000 mm]
    B -->|Squareness| G[2 mm / 1000 mm]

This ensures quality control and uniformity in veneered particle boards as per IS 3097.

IS 3097 - Sampling: Key Points

1. Scale of Sampling (Clause 8.1.2, Table 2)

Number of veneered particle boards to select from a lot for tests:

2. Rounding Off (Clause None)

• Final test values must be rounded per IS 2:1960 rules.
• Retain the same number of significant figures as specified in the standard.

3. Test Specimen (Clause 9.1)

• Specimens must be selected from the sampled boards per test requirements (details in Clause 9).

Summary:

• Sample size depends on lot size (Table 2).
• Use IS 2:1960 for rounding test results.
• Test specimens are drawn from these samples for compliance verification.

flowchart TD
    A[Lot Size N] --> B{Select Sample Size n}
    B -->|N ≤ 100| C[2 Boards]
    B -->|101 ≤ N ≤ 300| D[3 Boards]
    B -->|301 ≤ N ≤ 500| E[5 Boards]
    B -->|N ≥ 501| F[8 Boards]
    C & D & E & F --> G[Test Specimens]
    G --> H[Testing & Rounding per IS 2:1960]

This ensures representative sampling and accurate compliance testing.

IS 3097: Tests and Acceptance Criteria for Particle Boards

Key Test Specimens & Dimensions

• Specimens as per IS 2380 Parts 3, 4, 13, 16, 17 dimensions.
• Veneered boards: 250 mm × 100 mm (water resistance test).
• Adhesion test specimens: 200 mm × 100 mm.

Test Methods & Criteria

Sampling Procedure (Clause 8.1.2.1)

• Random selection using serial order: select every rth board, where
  [ r = \text{Integral part of } \frac{N}{n} ] (N) = lot size, (n) = sample size.
• Alternatively, use random number tables from IS 490

IS 3097: Additional Requirements for ECO-Mark (Clause 10)

• ECO-Mark Basis:

  • Governed by Gazette Notification No. 170 (18 May 1996) for wood substitutes as environment-friendly products.
  • Administered by BIS under the BIS Act, 1986, per Resolutions No. 71 (21 Feb 1991) & No. 425 (28 Oct 1992).

• Key Requirements:

  • Veneered particle boards must meet ECO-Mark criteria specified in relevant clauses of IS 3097.
  • Manufacturer must submit documentary evidence (certificate/declaration) to BIS when applying for ECO-Mark.

• Marking Scheme:

  • ECO-Mark combines ISI Mark + ECO logo.
  • Use of ECO-Mark is optional; manufacturers may opt for ISI Mark alone.

Summary Table: ECO-Mark Compliance

This clause does not provide specific formulas or detailed tables but emphasizes compliance documentation and marking for eco-friendliness.

IS 3097: Marking Specifications for Veneered Particle Boards

Key Marking Requirements (Clause 11.1)

Each veneered particle board must be legibly and indelibly marked on any edge with:

• Manufacturer's name or trade-mark
• Grade and type of veneered particle board
• Thickness of the board
• ECO-Mark criteria, if applicable

BIS Certification Mark (Clause 11.2 & 11.2.1)

• Use of the Standard Mark follows the Bureau of Indian Standards Act, 1986.
• Licence conditions for the Standard Mark are governed by BIS rules.
• Each particle board may also bear the BIS Standard Mark.

Rounding Off (IS 2:1960)

• Test results must be rounded off according to IS 2:1960.
• Retain the same number of significant digits as in the specified value.

Summary Table for Marking

This ensures traceability, quality assurance, and compliance with IS standards for veneered particle boards.

IS 3097: Referenced Standards Summary

IS 3097 references multiple Indian Standards (IS) for definitions, test methods, and specifications related to plywood, particle boards, and timber products. Key points:

Key Referenced IS Standards

Important Notes

• Definitions from IS 707 and IS 3087 apply.
• Rounding of test results follows IS 2:1960 rules.
• Certification and use of the BIS Standard Mark per BIS Act 1986.
• Refer to the latest editions of these standards for up-to-date provisions.

Example: Rounding Off (IS 2:1960)

flowchart LR
    A[IS 3097] --> B[Definitions: IS 707, IS 3087]
    A --> C[Specifications: IS 303, IS 1328]
    A --> D[Testing: IS 2380 series]
    A --> E[Sampling: IS 4905]
    A --> F[Rounding: IS 2]
    A --> G[BIS Certification Rules]

This structure ensures compliance with timber product quality and testing requirements as per IS 3097.

IS 3097: Species of Timber for Veneers (Clause 5.2.1 & Annex B)

• Timber Classes for Veneers:

  • Class I: Preferred species for face veneers & cross-bands in all grades of veneered particle boards.
  • Class II: Alternative species allowed with some restrictions.

• Key Timber Species (Class I Examples):

• Class II Examples:

• Veneer Thickness (Clause 6.2.1):

  • Cross-band: 1.0 mm to 3.0 mm
  • Face veneers (commercial): 0.5 mm to 1.6 mm
  • Face veneers (decorative): 0.5 mm to 1.0 mm
  • Thickness tolerance: ±5%

• ECO-Mark Compliance:

  • Use timber from sustainable sources like plantations, shade trees, not natural forests.
  • Decorative veneers must conform to IS 1328.

Summary Diagram: Veneer Timber Selection & Thickness

flowchart TD
    A[Timber Species for Veneers]
    A --> B[Class I: Preferred Species]
    A --> C[Class II: Alternative Species]
    B --> D[Examples: Aini, Arjun, Mango, Teak, Rosewood]
    C --> E[Examples: Amra, Silver Oak, Kadam]

    F[Veneer Thickness]
    F --> G[Cross-band: 1.0 - 3.0 mm]
    F --> H[Face Veneers Commercial: 0.5

IS 3097: Testing Procedures for Edge Straightness and Squareness

Dimensional Tolerances (Clause 7.4, Table 7.4)

Testing Procedures (Annex C)

C-1: Edge Straightness

• Use a straight edge at least as long as the board.
• Place the straight edge along the board edge.
• If the edge is convex, position it to create approximately equal gaps at both ends.
• Measure the maximum gap between the board edge and the straight edge to the nearest 1 mm.
• The gap should not exceed 2 mm per 1000 mm length.

C-2: Squareness

• Use a 1200 mm × 1200 mm square.
• Place one arm of the square along one edge of the board.
• Measure the maximum gap between the other arm and the adjacent edge.
• The gap should not exceed 2 mm per 1000 mm length.

Summary Diagram

graph LR
A[Edge Straightness Test] --> B[Place straight edge along board edge]
B --> C[Measure max gap (≤ 2 mm/1000 mm)]
D[Squareness Test] --> E[Place 1200mm square on board corner]
E --> F[Measure max gap at adjacent edge (≤ 2 mm/1000 mm)]

Note: Measurements must conform to tolerances before specimen cutting (Clause 8.1.2).