Gypsum Plaster Boards, Part 2: Coated/Laminated Gypsum Plaster Boards

IS 2095 Part 2: Scope & Key Specifications

Scope

• Defines dimensions, properties, and testing of cement-bonded particle boards.
• Applies to boards used in construction and interior applications.

Key Specifications from Clause 6.2 & Table 1

Rounding Off (IS 2:1960)

• Final test or calculated values must be rounded to the same significant figures as specified.
• Ensures consistency in compliance evaluation.

Summary

• Boards must conform to dimensional tolerances in Table 1.
• Testing results must follow IS 2 rounding rules.
• Scope covers definitions, dimensions, and quality requirements.

flowchart TD
    A[Start: Cement Bonded Particle Boards] --> B[Dimensions as per Table 1]
    B --> C[Length, Width, Thickness Specified]
    C --> D[Testing & Analysis]
    D --> E[Rounding off values per IS 2:1960]
    E --> F[Compliance Check]

For detailed dimensions, refer to Table 1 of IS 2095 Part 2.

IS 2095 (Part 2): 2001 – Key References and Specifications

1. Referenced Standards

• This standard incorporates provisions from other Indian Standards current at publication.
• Users should check for the latest editions of referenced standards for compliance.

2. Rounding Off Rules (IS 2:1960)

• Final test or calculation values must be rounded per IS 2:1960.
• Retain the same number of significant digits as the specified value.

3. Board Dimensions & Mass (Clause 6.2 & 6.3)

(Exact values of Table 1 are not provided in the context; refer to IS 2095 Part 2, Table 1 for details.)

Summary Diagram

flowchart TD
    A[IS 2095 Part 2: 2001] --> B[References to other IS codes]
    A --> C[Rounding off per IS 2:1960]
    A --> D[Board Dimensions & Mass]
    D --> E[Length, Width, Thickness (Table 1)]
    D --> F[Minimum Mass per m² (Table 1)]

Note: Always verify the latest editions of referenced IS codes for up-to-date compliance.

IS 2095 (Part 2): 2001 — Key Definitions & Specifications

1. Definitions (Clause 3.0)

• Defines terms related to cement-bonded particle boards to ensure uniform understanding.
• Examples include length, width, thickness, and mass per unit area of boards.

2. Dimensions & Mass (Clause 6.2 & 6.3)

Exact values must be referred from Table 1 of IS 2095 (Part 2).

3. Rounding Off (Clause None)

• Final test/analysis results must be rounded per IS 2:1960.
• Retain the same number of significant digits as the specified value.

Summary:

• Use Table 1 for board dimensions and mass.
• Follow IS 2:1960 for rounding numerical results.
• Definitions ensure clarity in specifying and testing cement-bonded particle boards.

flowchart TD
    A[Definitions (Clause 3.0)] --> B[Dimensions (Clause 6.2)]
    B --> C[Length, Width, Thickness (Table 1)]
    B --> D[Minimum Mass per m² (Table 1)]
    A --> E[Rounding Off (IS 2:1960)]
    E --> F[Maintain significant digits]

For detailed values, always consult the official IS 2095 (Part 2): 2001 Table 1.

IS 2095 (Part 2): 2001 - Materials Key Specifications

1. Board Dimensions & Mass (Clause 6.2 & 6.3)

• Length, Width, Thickness: As per Table 1 (typical ranges given in IS 2095 Part 2)
• Minimum Mass per m²: Specified in Table 1 to ensure adequate density and strength.

2. Quality Control & Sampling (Clause 9.3.1 & 9.4)

• Visual Inspection & Defect Limits: Number of defective boards allowed per lot is given in Table 2 (Column 3).
• Sampling for Testing: Number of boards to be tested for bending strength and thermal conductivity is per Table 2 (Column 4).

3. Testing Standards

• Transverse Bending Strength: Tested as per IS 2542 (Part 2/Sec 1 to 8)
• Thermal Conductivity: Tested as per IS 9489

Example Table Extract (Hypothetical)

Summary Flowchart of Quality Control Process

flowchart TD
    A[Start: Board Production] --> B[Visual Inspection]
    B -->|Defectives ≤ Permissible| C[Check Dimensions & Mass]
    C -->|Conforming| D[Select Samples for Testing]
    D --> E[Test Bending Strength (IS 2542)]
    D --> F[Test Thermal Conductivity (IS 9489)]
    E & F --> G[Accept or Reject Lot]

Note: Refer to IS 2095 Part 2 Tables 1 & 2 for exact values and permissible defectives.

IS 2095 Part 2: Method of Manufacture for Gypsum Fibre Boards

Key Steps (Clause 5)

• Cellulosic fibres from waste paper are prepared in fibre mills.
• Fibres are blended uniformly with gypsum plaster in a mixer.
• The mix is spread evenly on a perforated belt or moulds and humidified.
• Pressing is done using a continuous or hand press to form boards.
• After setting, boards are demoulded and dried.
• Boards are moistened with a bonding agent for surface treatment to reduce water absorption and dust.
• Finished boards are packed in stacks.

Important Specifications (Clause 6.3 & Table 6.4)

• Other dimensions possible by agreement.

Notes:

• Use oil/grease that leaves plaster surface clean (Clause 4.4).
• Final test values should be rounded as per IS 2:1960.
• Visual inspection and tolerances per Table 2 and Clause 9.3.1.

flowchart LR
    A[Waste Paper] --> B[Fibre Mill]
    B --> C[Cellulosic Fibres]
    C --> D[Mixer]
    E[Gypsum Plaster] --> D
    D --> F[Spreading Unit]
    F --> G[Pressing (Continuous/Hand)]
    G --> H[Setting & Demoulding]
    H --> I[Drying]
    I --> J[Surface Treatment (Bonding Agent)]
    J --> K[Finished Boards]
    K --> L[Packing & Stacking]

This summarizes the manufacturing process and key specs per IS 2095 Part 2.

IS 2095 Part 2: Dimensions and Tolerances Summary

1. Dimensions (Clause 6.2 & Table 1)

Note: Other dimensions possible by mutual agreement.

2. Tolerances (Clause 6.5)

• Length: +0 / -6 mm
• Width: +0 / -5 mm
• Thickness: +0 / -6 mm

3. Surface & Edge Quality

• Surface must be true and free from imperfections.
• Edges must be straight.
• Corners must be square.

4. Rounding Off (Clause None)

• Follow IS 2:1960 for rounding test results.
• Retain the same number of significant digits as specified.

Summary Diagram

flowchart TD
    A[Nominal Dimensions] --> B[Length: 1500 mm]
    A --> C[Width: 1000 mm]
    A --> D[Thickness: 10 mm]
    E[Tolerances] --> F[Length: +0 / -6 mm]
    E --> G[Width: +0 / -5 mm]
    E --> H[Thickness: +0 / -6 mm]
    I[Quality] --> J[Surface: True, no defects]
    I --> K[Edges: Straight]
    I --> L[Corners: Square]

This concise summary ensures compliance with IS 2095 Part 2 for gypsum plaster boards.

IS 2095 (Part 2) - Key Physical & Mechanical Requirements

1. Dimensions & Mass (Clause 6.2 & 6.3, Table 1)

Note: Table 1 defines standard board sizes and corresponding minimum mass per square meter ensuring adequate density.

2. Quality Control & Testing (Clause 9.3, 9.4)

• Visual Inspection: Shape, dimensions, mass, and fibre content inspected.
• Permissible Defectives: Maximum allowed defective boards per lot given in Table 2, col 3.
• Mechanical Tests:
  • Transverse Bending Strength per IS 2542 (Part 2/Sec 1-8)
  • Thermal Conductivity per IS 9489
• Sample Size: Number of boards tested per lot as per Table 2, col 4.

Summary Table: Inspection & Testing

Conceptual Flow of Quality Control

flowchart LR
    A[Lot Received] --> B[Visual Inspection]
    B -->|Defectives ≤ Permissible| C[Select Samples]
    C --> D[Mechanical Testing]
    C --> E[Thermal Conductivity Testing]
    D & E --> F[Lot Conformance Decision]

Use these tables and clauses to ensure compliance with IS 2095 (Part 2) for plasterboards.

IS 2095 Part 2: Visual Inspection Key Points

• Clause 8.1: Boards must be sound, free from cracks, broken edges, and other imperfections making them unfit for use.

• Clause 9.3: Boards selected are inspected for:

  • Visual defects
  • Shape and dimensions
  • Mass of boards
  • Fibre ratio
    Any board failing any criterion is defective.

• Clause 9.3.1:
  A lot is accepted if the number of defectives ≤ permissible defectives in Table 2, Column 3.

• Clause 9.4:
  Boards passing visual inspection are then tested for:

  • Transverse bending strength (per IS 2542 Part 2)
  • Thermal conductivity (per IS 9489)
    Number of samples for testing is from Table 2, Column 4.

Table 2 (Extract)

(Note: Refer to IS 2095 Part 2 for exact values and lot size ranges.)

Summary Flow Diagram

flowchart TD
    A[Select Boards] --> B[Visual Inspection]
    B -->|Defectives ≤ Permissible| C[Lot Accepted for Further Testing]
    B -->|Defectives > Permissible| D[Lot Rejected]
    C --> E[Transverse Bending & Thermal Tests]

Use this process and Table 2 limits to ensure compliance with IS 2095 Part 2 visual inspection requirements.

IS 2095 Part 2: Sampling and Testing Key Points

Sampling Procedure (Clause 9.2.1)

• Boards are selected randomly from the lot.
• Follow IS 4905 for randomness in selection.

Sampling Scale & Permissible Defectives (Table 2)

Compliance Criteria (Clause 9.3.1)

• A lot conforms if defectives ≤ permissible number in Table 2.
• Applies for visual inspection, shape, dimensions, plaster mass, and fiber ratio.

Rounding Off (IS 2:1960)

• Final test values rounded off as per IS 2 rules.
• Retain significant figures equal to those in specified values.

flowchart TD
    A[Start: Lot of Boards] --> B{Select Sample Size}
    B -->|Refer Table 2| C[Random Sampling per IS 4905]
    C --> D[Inspect Sample Boards]
    D --> E{Count Defectives}
    E -->|Defectives ≤ Permissible| F[Lot Conforms]
    E -->|Defectives > Permissible| G[Lot Rejected]

This ensures quality control with statistical confidence per IS 2095 Part 2.

IS 2095 Part 2: Specific Requirements for ECO Mark

Key Specifications for ECO Mark (Clauses 10.1.2 & 10.2)

• Environmental Clearance: Manufacturer must obtain environmental consent from the State Pollution Control Board under:

  • Water (Prevention and Control of Pollution) Act, 1974
  • Air (Prevention and Control of Pollution) Act, 1981
  • Authorization under Environment (Protection) Act, 1986 (if applicable)

• Material Requirement:

  • Gypsum plaster boards must be manufactured using phospho-gypsum (Clause 10.2).
  • Documentary evidence (certificate/declaration) confirming phospho-gypsum use must be submitted to BIS with the ECO Mark application.

Packing and Marking Requirements (Clause 11.2)

Each board shall be permanently marked with:

• Manufacturer's name and trademark
• Size of the board (e.g., 1200 mm x 2400 mm)
• Batch number
• ECO Mark criteria and list of critical ingredients by descending % mass

Summary Table for ECO Mark Compliance

flowchart LR
    A[Manufacturer] --> B[Obtain Environmental Clearance]
    B --> C[Use Phospho-Gypsum in Boards]
    C --> D[Produce Boards & Mark as per Clause 11.2]
    D --> E[Apply for ECO Mark with BIS]
    E --> F{BIS Approval}
    F -->|Approved| G[Eco Mark Certified Product]
    F -->|Rejected| H[Revise & Resubmit]

This ensures environmental compliance and promotes sustainable gypsum board production under IS 2095 (Part 2).

IS 2095 (Part 2) - Packing and Marking Key Points

1. Packing Requirements (Clause 6.3 & Table 1)

• Minimum mass per square metre of gypsum plaster boards is specified to ensure quality and consistency.

(Exact values should be checked from the actual Table 1 in the standard.)

2. Marking Requirements (Clause 11.2)

Each board must be clearly and permanently marked with:

• Manufacturer's name and trade-mark
• Size of the board (e.g., length x width x thickness)
• Batch number for traceability
• ECO Mark criteria (if applicable), including:
  • Declaration of ECO Mark certification
  • List of identified critical ingredients in descending order by mass percentage

3. ECO Mark Specific (Clause 10.2)

• Boards labeled as ECO Mark must be manufactured using phospho-gypsum.
• Manufacturer to provide documentary evidence (certificate/declaration) to BIS.

Summary Diagram of Marking:

graph TD
A[Gypsum Board] --> B[Manufacturer's Name & Trade-mark]
A --> C[Board Size]
A --> D[Batch Number]
A --> E{ECO Mark?}
E -->|Yes| F[Criteria & Critical Ingredients List]
E -->|No| G[No ECO Mark Info]

Note: Always refer to the latest IS 2095 Part 2 document for exact mass values and detailed packing instructions.

IS 2095 Part 2 does not explicitly detail Committee Composition within its main clauses; it refers to Annex A for this information.

Key Points from the Code:

• Committee Composition:

  • Specified in Annex A (not in the main clauses).
  • Typically includes experts from industry, academia, government bodies, and user representatives.

• Relevant Clauses:

  • Clause 6.1: Boards shall be rectangular or square.
  • Clause 6.2: Board dimensions per Table 1.
  • Clause 9.2: Sampling size per Table 2.

Example Table Format (for Board Dimensions from Table 1):

Sampling Table Example (Table 2):

For exact committee member composition, refer to Annex A of IS 2095 Part 2.