Gypsum Plaster Boards, Part 1: Plain Gypsum Plaster Boards

IS 2095 Part 1: Scope - Key Dimensions & Specifications

1. Gypsum Wallboards (Table 1, Clause 7.1)

Note: Other dimensions allowed by mutual agreement.

2. Gypsum Baseboards (Table 2, Clause 7.1)

3. Reference

• Definitions per IS 2469 apply.
• Specific requirements in Clause 11.2.

flowchart TD
    A[IS 2095 Part 1 Scope] --> B[Gypsum Wallboards]
    A --> C[Gypsum Baseboards]
    B --> B1[Width: 1800-3600 mm]
    B --> B2[Length: 600, 900, 1200 mm]
    B --> B3[Thickness: 9.5 to 25 mm]
    C --> C1[Width: 400, 900 mm]
    C --> C2[Length: 1200, 1500, 1800 mm]
    C --> C3[Thickness: 9.5, 12.5 mm]

This summary provides the key dimensional specifications and tolerances for

IS 2095 Part 1 - Key Specifications & Tables

1. Dimensions (Clause 7.1)

2. Breaking Load (Transverse Strength) - Table 3 (Clause 7.3)

3. References

• Optional tests: See IS 2542 (Part 2) (Clause 8.3)
• Sampling & conformity criteria: Clause 9
• Specific requirements: Clause 11.2

This concise summary aids in selecting gypsum boards per IS 2095 Part 1 standards for dimensions and strength.

IS 2095 (Part 1) - Definitions & Key Specifications

Definitions

• As per Clause 3.1, all definitions in IS 2469 apply to gypsum plasterboards and baseboards.

Dimensions (Clause 7.1)

Notes

• Other dimensions may be agreed mutually between purchaser and manufacturer.
• Refer IS 2469 for detailed definitions related to gypsum boards.

flowchart LR
    A[IS 2095 Part 1] --> B[Definitions per IS 2469]
    A --> C[Wallboard Dimensions]
    A --> D[Baseboard Dimensions]
    C --> E[Width: 1800-3600 mm]
    C --> F[Length: 600, 900, 1200 mm]
    C --> G[Thickness: 9.5 to 25 mm]
    D --> H[Width: 400, 900 mm]
    D --> I[Length: 1200, 1500, 1800 mm]
    D --> J[Thickness: 9.5, 12.5 mm]

This summary provides the essential dimensional specs and references for gypsum plasterboards per IS 2095 (Part 1

Classification and Types of Gypsum Plaster Boards (IS 2095 Part 1:2011)

• Definition (Clause 6.1): Gypsum plaster boards have a gypsum core (with/without fiber) bonded to paper liners. Edges are paper-covered and profiled for application.

• Classification (Clause 4.1): Boards are classified based on their use—wall lining, ceiling, or baseboards.

Key Dimensions (Clause 7.1)

Notes:

• Boards may have additives for enhanced properties.
• Paper surfaces vary by board type.
• Dimensions can be mutually agreed beyond standard sizes.

Summary Table for Wallboard Dimensions

| Dimension | Value (mm)          | Tolerance (mm)  |
|-----------|---------------------|-----------------|
| Width     | 1800 to 3600 (step 100) | 0 to -6        |
| Length    | 600, 900, 1200      | 0 to -5         |
| Thickness | 9.5 (±0.5), 12.5, 15, 19, 23, 25 (±0.6) | ±0.5 to ±0.6 |

This classification and dimensional specification ensure uniformity and suitability for various building applications per IS 2095 Part 1.

IS 2095 Part 1 - Key Specifications for Materials

1. Dimensions (Clause 7.1)

2. Breaking Load (Transverse Strength) (Clause 7.3)

3. Testing Method

• As per IS 2542 (Part 2/Sec 1 to 8) for dimensions and transverse strength.

This summary aids in selecting gypsum boards by size and strength as per IS 2095 Part 1.

IS 2095 Part 1: Manufacture and Composition Key Points

1. Dimensions (Clause 7.1)

2. Composition & Manufacture Notes

• Mass of plaster per unit area and water absorption limits are mutually agreed between manufacturer and purchaser.
• Testing methods per IS 2542 (Part 2/Sec 1 to 8).

3. Certification & Marking (Clause 12.4.1)

• BIS Standard Mark use governed by BIS Act 1986.
• ECO logo combined with ISI mark for environment-friendly products (optional).

Summary Diagram: Dimension Specification Flow

flowchart TD
    A[Start: Board Type] --> B{Wallboard or Baseboard?}
    B -->|Wallboard| C[Width: 1800-3600 mm]
    B -->|Baseboard| D[Width: 400 or 900 mm]
    C --> E[Length: 600, 900, 1200 mm]
    D --> F[Length: 1200, 1500, 1800 mm]
    E --> G[Thickness: 9.5 to 25 mm]

IS 2095 Part 1: Dimensions and Tolerances for Gypsum Boards

1. Gypsum Wallboards (Table 1, Clause 7.1)

2. Gypsum Baseboards (Table 2, Clause 7.1)

3. Taper Specifications (Clause 1.9)

• Taper Width: 40 to 80 mm
• Taper Depth: 0.6 to 1.9 mm

Notes

• Dimensions may vary by mutual agreement.
• Taper dimensions align with ISO standards.
• Measurement of taper profile detailed in Clause 8.2.

flowchart LR
    A[Gypsum Boards] --> B[Wallboards]
    A --> C[Baseboards]
    B --> D[Width: 1800-3600 mm, Tol: 0/-6 mm]
    B --> E[Length: 600,900,1200 mm, Tol: 0/-5 mm]
    B --> F[Thickness: 9.5-25 mm, Tol: ±0.5 to ±0.6 mm]
    C --> G[Width: 400,900 mm, Tol: 0/-8 mm]
    C --> H[Length: 1200,150

IS 2095 Part 1: Taper Profile Measurement Summary

Key Specifications (Clause 1.9)

• Taper Width: 40 to 80 mm
• Taper Depth: 0.6 to 1.9 mm

Measurement Procedure (Clause 8.2.2)

• Use a micrometer (accuracy ±0.01 mm) mounted on a special device (Fig. 6).
• Place the device on the board face, micrometer positioned 150 mm from the edge.
• Zero the micrometer scale at this position.
• Move the device towards the edge.
• Take the taper depth reading 10 mm from the edge.

Important Notes

• All dimensions are in millimeters.
• The taper profile ensures proper bonding and mechanical interlock in plywood manufacturing.

flowchart LR
    A[Start Measurement] --> B[Place device on board face]
    B --> C[Position micrometer 150 mm from edge]
    C --> D[Zero micrometer scale]
    D --> E[Move device towards edge]
    E --> F[Take reading 10 mm from edge]
    F --> G[Record taper depth]

This method ensures consistent taper depth within specified limits for quality control.

IS 2095 Part 1: Sampling and Criteria for Conformity

Key Points from Clause 9 (Sampling and Conformity)

• Sampling Method: Boards are selected randomly from the lot, following procedures in IS 4905 to ensure randomness.
• Lot Conformity: A lot conforms if it meets criteria in Clauses 9.2.1 and 9.2.2 (usually dimensional and strength requirements).

Table 4: Sample Size & Acceptance Criteria

Interpretation:

• Acceptance Number: Maximum allowable defective samples for lot acceptance.
• For dimensional tests, zero or one defective sample is allowed depending on lot size.
• For transverse strength, fewer samples are tested but with similar acceptance criteria.

Summary:

• Use random sampling per IS 4905.
• Sample size depends on lot size (see Table 4).
• Lot acceptance is based on zero or one defective sample in dimensional and strength tests.
• Refer to IS 2542 (Part 2) for additional optional tests.

flowchart TD
    A[Start: Lot of Boards] --> B[Random Sampling per IS 4905]
    B --> C{Lot Size?}
    C -->|Up to 500| D[Sample 5 (Dim), 2 (Strength), Accept 0 defects]
    C -->|501-1000| E[Sample 8 (Dim), 3 (Strength), Accept 0 defects]
    C -->|1001-3000| F[Sample 13 (Dim), 5 (Strength), Accept 1 defect]
    C -->|3001+| G[Sample 20 (Dim), 8 (Strength), Accept 1 defect]
    D --> H[Evaluate Samples]
   

IS 2095 Part 1: Surface Quality Key Points

• Surface Quality Requirement (Clause 10.1):
  Surfaces must be true, smooth, and free from imperfections (cracks, blisters, unevenness) that affect usability or decoration.

• Taper Profile Measurement (Clause 8.2):
  Measurement of taper profile ensures uniform edge tapering for proper jointing.

• Taper Dimensions (Clause 1.9):

  • Taper Width: 40 to 80 mm
  • Taper Depth: 0.6 to 1.9 mm
  • These dimensions align with ISO standards for consistency.

Summary Table: Taper Dimensions

Notes:

• Surface quality directly impacts board performance and finish.
• Taper dimensions control board fit and joint tightness.

flowchart LR
    A[Board Surface] --> B{Surface Quality}
    B --> |True & Smooth| C[Fit for Use]
    B --> |Imperfections| D[Reject or Rework]
    A --> E[Taper Profile]
    E --> F[Taper Width: 40-80 mm]
    E --> G[Taper Depth: 0.6-1.9 mm]

IS 2095 Part 1: Additional Requirements for ECO Mark (Clause 11 & 12.4.1)

• ECO Mark Eligibility:

  • Product must carry the ISI Mark along with the ECO logo.
  • ECO Mark is optional; manufacturers can opt for ISI Mark alone.
  • ECO Mark indicates environment-friendly compliance.

• Manufacturer Obligations (Clause 11.1.2):

  • Must provide consent/clearance from State Pollution Control Board under:
    • Water (Prevention and Control of Pollution) Act, 1974
    • Air (Prevention and Control of Pollution) Act, 1981
    • Water Cess Act, 1977
    • Environment (Protection) Act, 1986
  • Must comply with Forest Department rules if applicable.

• Standard Mark Usage (Clause 12.4.1):

  • Governed by Bureau of Indian Standards Act, 1986.
  • Licence conditions available from BIS.

Summary Table: ECO Mark Requirements

This ensures products are both quality-certified and environmentally compliant under BIS ECO Mark scheme.

IS 2095 Part 1: Packing and Marking Key Points

• Packing Material:

  • Must be recyclable, reusable, or biodegradable (Clause 11.1.4 & 12.2).
  • Manufacturer must declare the nature of packing materials used.

• Packing Requirements:

  • Packages should protect the product during transportation and storage.
  • Should allow for easy handling and stacking without damage.

• Marking:

  • Each package must have clear marking including:
    • Product name and grade
    • Manufacturer’s name and address
    • Batch or lot number
    • Date of manufacture
    • Handling/storage instructions (if any)

• Documentation:

  • Manufacturer must provide certificates or declarations confirming compliance with eco-friendly packing and product standards (Clause 11.2.1).

Summary Table

This ensures environmental sustainability and traceability in gypsum board products.

flowchart TD
    A[Gypsum Boards] --> B[Packing]
    B --> C{Material}
    C -->|Recyclable| D[Eco-friendly]
    C -->|Reusable| D
    C -->|Biodegradable| D
    B --> E[Marking]
    E --> F[Product Info]
    E --> G[Manufacturer Info]
    E --> H[Batch & Date]
    E --> I[Handling Instructions]