Bamboo mat veneer composite for general purposes -Specification
1999 Edition

Scope and Essential Specifications for Bamboo Mat-Veneer Composites

Scope (Clauses 10.1 & 9.1)

• Establishes general criteria for bamboo mat-veneer composites suitable for varied applications.
• Defines preparation methods for test samples to verify quality and performance.

Dimensions (Clause 6.2)

Standard panel sizes include:

Squareness Verification (Clause 2.1)

• Employ a 1200 mm × 1200 mm square gauge.
• Position one arm over the composite panel and measure the maximum gap to check squareness.

Dimension Summary Table

This standardization promotes uniformity in panel sizes and quality under IS 14588.

Summary of Definitions per IS 14588

• Referenced Standards for Clarification:

  • IS 707: Timber technology glossary
  • IS 6874: Vitrified tiles specification
  • IS 13958: Bamboo mat board specification

• Dimension Flexibility (Clause 6.3 Note):

  • Length, width, and thickness can be tailored through mutual agreement between producer and purchaser.

• Test Specimen Requirements (Clause 9.1):

  • Test specimens must conform to specified or agreed dimensions and general standards.

Key Parameters

This approach allows adaptability while ensuring conformity through referenced Indian Standards.

flowchart LR
    A[IS 14588 Definitions] --> B[IS 707]
    A --> C[IS 6874]
    A --> D[IS 13958]
    A --> E[Custom Dimensions]
    E --> F[Agreed by Manufacturer and Buyer]

Material Specifications for Bamboo Mat-Veneer Composites as per IS 14588

1. Mechanical Properties - MOR and MOE (Clause 9.6)

• Three specimens per batch tested according to IS 1734 (Part 11): 1983.
• Static bending test method applied.

2. Test Specimen Criteria (Clause 9.1)

• Minimum strength criteria:
  • MOR ≥ 1.2 N/mm²
  • MOE ≥ 0.9 N/mm²

3. Reference Test Methodology

• Testing conducted as per IS 1734 (Part 11) static bending strength procedure.

Overview

• Three specimens per sample for evaluation.
• Average MOR must be ≥ 30 N/mm² and MOE ≥ 3000 N/mm².
• Individual test values should not fall below 27 N/mm² (MOR) and 2700 N/mm² (MOE).

flowchart LR
    A[Sample Collection] --> B[Prepare 3 Test Specimens]
    B --> C[Conduct Static Bending Tests (IS 1734 Part 11)]
    C --> D{Evaluate Results}
    D -->|Average| E[MOE ≥ 3000 N/mm²]
    D -->|Average| F[MOR ≥ 30 N/mm²]
    D -->|Minimum Individual| G[MOE ≥ 2700 N/mm²]
    D -->|Minimum Individual| H[MOR ≥ 27 N/mm²]

These criteria ensure that composite panels meet required structural performance.

Manufacturing Standards for Bamboo Mat-Veneer Boards as per IS 14588

Dimensions and Tolerances (Clause 6.3 and related)

• Thickness categories:

  • Less than 6.0 mm
  • 6.0 mm and above

• Thickness tolerance: ±2 mm per 1000 mm length

• Edge straightness tolerance: ±2 mm per 1000 mm length

• Other dimensions (length, width, thickness) can be customized by agreement between producer and customer.

Test Sample Preparation (Clause 9.1)

• Test specimens must conform to prescribed preparation procedures to maintain consistency.

Surface Finish and Workmanship (Clause 7)

• Finished surface should be uniform, smooth, and free from visible defects.

Dimension Tolerance Summary

These controls ensure dimensional precision and quality during production.

Key Requirements for Surface Texture and Workmanship (IS 14588)

1. Surface Quality (Clause 7.2)

• Bamboo mats on composite faces must exhibit smoothness and consistent coloration.
• Sampling and compliance checked against IS 7638 standards (BWR grade plywood as per IS 303).

2. Dimensional Tolerance (Clause 6.4, Table 6.4)

3. Edge and Squareness Specifications

• Maximum allowable deviation is 2 mm per 1000 mm length for both characteristics.

Visual Summary:

flowchart TD
    A[Completed Composite Panel] --> B[Length: +6/-0 mm]
    A --> C[Width: +3/-0 mm]
    A --> D[Thickness Tolerance]
    D --> D1[Below 6.0 mm: ±10%]
    D --> D2[6.0 mm or above: ±5%]
    A --> E[Squareness: 2 mm per 1000 mm]
    A --> F[Edge Straightness: 2 mm per 1000 mm]

Ensuring smooth finishes and adherence to dimensional tolerances guarantees product quality.

Dimensions and Tolerance Specifications for Bamboo Mat-Veneer Composite Boards (IS 14588)

1. Standard Sizes (Clause 6.2)

• Typical panel sizes (in mm):
  • 2440 × 1220
  • 2140 × 1220
  • 1840 × 1220
  • 2140 × 920
  • 1840 × 920

2. Tolerance on Nominal Dimensions (Clause 6.4)

3. Additional Notes (Clause 6.3)

• Other dimensions can be negotiated between manufacturer and purchaser.

Tolerance Formula for Thickness:

[ \text{Tolerance} = \begin{cases} \pm 10% & \text{if thickness} < 6.0\text{ mm} \ \pm 5% & \text{if thickness} \geq 6.0\text{ mm} \end{cases} ]

flowchart TD
    A[Nominal Panel Size] --> B[Length: +6/-0 mm]
    A --> C[Width: +3/-0 mm]
    A --> D[Thickness]
    D --> D1[< 6.0 mm: ±10%]
    D --> D2[≥ 6.0 mm: ±5%]
    A --> E[Squareness: 2 mm/1000 mm]
    A --> F[Edge Straightness: 2 mm/1000 mm]

These standards support consistent manufacturing and installation.

Sampling and Test Piece Preparation Guidelines (IS 14588)

1. Preparation of Test Specimens (Clause 9.1)

• Specimen sizing:

  • For bamboo mat-faced panels: according to IS 1734 (Part 4).
  • For other panels: 50 mm × 50 mm with full thickness.

• Specimens must be taken from multiple locations on the board (Clause 9.1.1).

2. Mechanical Testing - MOR and MOE (Clause 9.6)

• Three specimens per sample are drawn as per IS 1734 (Part 11).
• Tests follow static bending procedures.
• Acceptance criteria:

3. Surface Quality and Sampling (Clause 7.2)

• Bamboo mat faces must be smooth and color consistent.
• Sampling complies with IS 7638 (BWR grade plywood standards).

Testing Flowchart

flowchart TD
    A[Select Sample Board] --> B[Cut Specimens (50x50 mm or IS 1734 Spec)]
    B --> C[Prepare 3 Specimens per Sample]
    C --> D[Conduct MOR & MOE Tests (IS 1734 Part 11)]
    D --> E[Compare Results to Criteria]
    E --> F{Meets Requirements?}
    F -- Yes --> G[Accept Sample]
    F -- No --> H[Reject Sample]

For full testing details, consult IS 1734 (Parts 4 & 11) and IS 7638.

Test Methods for Bamboo Mat-Veneer Composites (IS 14588)

1. Specimen Preparation (Clause 9.1)

• Test samples prepared following IS 1734 (Part 11): 1983.
• Three specimens per sample are required for MOR and MOE testing.

2. Mechanical Property Testing (Clause 9.6)

• Tests are performed according to IS 1734 (Part 11).
• Both average and minimum values must satisfy specified limits.

3. Surface Strength Evaluation (Clause 9.5)

• Includes wet state testing to assess durability under moisture exposure.

4. Edge and Squareness Assessment (Annex C)

• Procedures to measure edge straightness and panel squareness are defined.

MOR and MOE Calculation Formulas (from IS 1734 Part 11):

• ( MOR = \frac{3PL}{2bd^2} )
• ( MOE = \frac{PL^3}{4bd^3y} ) Where:
• ( P ) = Load at failure (N)
• ( L ) = Span length (mm)
• ( b ) = Specimen width (mm)
• ( d ) = Specimen thickness (mm)
• ( y ) = Deflection at load P (mm)

flowchart TD
    A[Prepare Test Specimens] --> B[3 Specimens per Sample]
    B --> C[Conduct MOR & MOE Testing]
    C --> D{Evaluate Test Results}
    D -->|Average & Minimum Values Meet Criteria| E[Pass]
    D -->|Fail| F[Reject Batch]

References: IS 14588 Clause 9 and IS 1734 (Part 11): 1983.

Mechanical Property Requirements as per IS 14588 (Clause 9.6)

Modulus of Rupture (MOR) and Modulus of Elasticity (MOE)

• Testing follows IS 1734 (Part 11): 1983 standards.
• Three specimens per sample are tested for bending strength.

Required Values (Table 1)

Additional Notes

• Only failure loads due to material breakage are considered for averaging.
• Internal bond strength (dry state) must be:
  • Average ≥ 9.0 N/mm²
  • Minimum individual ≥ 7.0 N/mm² (tested per IS 2380 Part 22)

Summary

• Ensure minimum individual MOE ≥ 2700 N/mm² and MOR ≥ 27 N/mm².
• Testing according to IS 1734 (Part 11) ensures compliance with structural performance criteria.

flowchart TD
    A[Sample Preparation] --> B[Test 3 Specimens for MOR & MOE]
    B --> C[Calculate Values per IS 1734 (Part 11)]
    C --> D{Values Within Limits?}
    D -- Yes --> E[Material Accepted]
    D -- No --> F[Material Rejected]

This confirms the material meets the strength and stiffness requirements.

Marking and Certification Requirements for Bamboo Mat-Veneer Composites (IS 14588)

Mandatory Marking (Clauses 10.1 & 10.2)

• Each composite panel must be clearly and permanently marked with:

  • Manufacturer’s name or trademark
  • Year of manufacture
  • Batch or lot number

• The use of the BIS Standard Mark is permitted subject to licensing under the BIS Act, 1986.

Certification Procedures (Clause 10.2.1)

• Manufacturers must secure a license from BIS to apply the Standard Mark.
• Compliance with Eco-Mark criteria is required, with documentary proof submitted to BIS.

Referenced Standards (Annex A)

Veneer Timber Species (Annex B)

• Includes species such as Artocarpus hirsutus (AIN), Terminalia arjuna (ARJ), Diospyros spp. (EBO), Dalbergia latifolia (ROS), Tectona grandis (TEA), etc.
• Species marked with † require preservative treatment.

flowchart TD
    A[Manufacture Composite] --> B[Mark with Manufacturer, Year, Batch]
    B --> C{Apply for BIS License?}
    C -->|Yes| D[Use BIS Standard Mark]
    C -->|No| E[No BIS Mark]
    D --> F[Submit Eco-Mark Documentation]
    F --> G[BIS Certification Granted]

Summary: Proper marking of panels and compliance with BIS licensing ensures quality and traceability.