Recommendations for co-ordination of dimensions in buildings-Arrangements of building components and assemblies, Part 3: Functional group 3 internal subdivision

IS 7564 Part 3 (1974) — Introduction & Scope Key Points

1. Purpose and Scope

• Focuses on co-ordinating dimensions of building components and assemblies for Functional Group 3: Internal Subdivision.
• Emphasizes correlation of dimensions between products placed together to perform a function (not strictly modular coordination).
• Aligns with international standards (BSPD 6432 Parts 1 & 2, British Standards).

2. Definitions

• Basic Size (Clause 2.9): Reference size fixing the limits of size.
• Grading: Components and assemblies are classified into grades A, B, C based on precision and function.

3. Recommended Co-ordinating Dimensions (Table 1 Summary)

• Grades:
  • A: High precision, critical dimensions.
  • B: Medium precision.
  • C: Low precision or non-critical.

4. Coordination Concept

• Co-ordinating dimensions ensure functional compatibility between adjacent components.
• Not all products require coordination unless performing a joint function.

Visual Summary - Coordination Concept

flowchart LR
    A[Building Components] --> B[Functional Group 3: Internal Subdivision]
    B --> C[Partitions]
    B --> D[Floors]
    B --> E[Ceilings]
    B --> F[Doors & Openings]
    C --> G[Brickwork, Blockwork]
    F --> H[Door leaves, Frames]
    subgraph Dimension Coordination
        G --> I[Length, Height, Thickness]
        H --> J[Width, Height, Thickness]
    end

Use IS 7564 Part 3 Table 1 for exact dimensions and cross-re

IS 7564 Part 3 - Scope & Key Specifications

Scope Summary:

• Covers co-ordinating dimensions of building components and assemblies for Functional Group 3 - Internal Subdivision.
• Focuses on dimensional coordination to ensure functional integration of components (e.g., partitions, floors, ceilings).
• Encourages correlation of product sizes for effective assembly and function.

Key Definitions:

• Basic Size (Clause 2.9): Reference size fixing the limits of size.
• Co-ordination of Dimensions (Clause 3.1): Establishing dimensional correlation between products for joint function.

Important Table Extract (Table 1 Highlights):

(✓ indicates recommended coordinating dimension)

Notes:

• Dimensions marked Length, Width, Height, Depth, Thickness vary by component.
• Grading A, B, C reflects suitability and precision for coordination.
• Cross-references to other functional groups ensure integrated design.

Conceptual Diagram of Dimensional Coordination:

graph LR
A[Building Components] --> B[Partitions]
A --> C[Floors]
A --> D[Ceilings]
A --> E[Doors]

B --> F{Dimensions}
C --> F
D --> F
E --> F

F --> G[Length]
F --> H[Width]
F --> I[Height]
F --> J[Depth]
F --> K[Thickness]

Summary: IS 7564 Part 3 standardizes dimensional coordination for internal subdivision elements to ensure compatibility and functional assembly in

IS 7564 Part 3 - Key Definitions & Specifications

1. Definitions (Clause 2.0 & 2.9)

• Basic Size (2.9): The reference size from which size limits are fixed.
• Grading of Components (3.1):
  • Grade A: Essential dimensional coordination.
  • Grade B: Dimensional coordination needed in some cases.
  • Grade C: No dimensional coordination required.

2. Co-ordinating Dimensions (Clause 4.1, Table 1)

• Applies to Functional Group 3 - Internal Subdivision.
• Dimensions specified include Length, Width, Height, Depth, Thickness.
• Components like partitions, floors, ceilings are graded (A, B, C) based on coordination need.

Sample Extract from Table 1:

Usage Notes:

• Grade A components require strict dimensional coordination.
• Grade B components require coordination depending on the situation.
• Grade C components are flexible in dimensions.

flowchart TD
    A[Basic Size] --> B[Limits of Size]
    C[Components] -->|Grade A| D[Essential Coordination]
    C -->|Grade B| E[Conditional Coordination]
    C -->|Grade C| F[No Coordination]
    G[Table 1] --> C

This ensures dimensional harmony in building internal subdivisions as per IS 7564 Part 3.

Grading of Components and Assemblies (IS 7564 Part 3)

Clause 3.1: Grading Categories

• Grade A: Essential dimensional coordination (critical components/assemblies).
• Grade B: Dimensional coordination needed in some situations.
• Grade C: No dimensional coordination required.

Key Specifications from Table 1 (Functional Group 3: Internal Subdivision)

Notes:

• Basic Size (Clause 2.9): Reference size fixing dimensional limits.
• Coordination ensures interchangeability and functional fit.
• Cross-reference to other functional groups (e.g., 1, 2, 4, 5) indicates related standards.

Summary Diagram: Grading & Coordination Importance

graph LR
  A[Grade A] -->|Essential| Coord[Dimensional Coordination]
  B[Grade B] -->|Conditional| Coord
  C[Grade C] -->|Not Required| NoCoord[No Dimensional Coordination]
``

IS 7564 Part 3 (1974) — Co-ordinating Dimensions of Building Components and Assemblies

This part provides recommended co-ordinating dimensions for building components in Functional Group 3 - Internal Subdivision.

Key Highlights from Table 1 (Clause 4.1):

Notes:

• Grading A, B, C indicates priority or precision level for coordination.
• Dimensions marked Selected are critical for coordination.
• Cross-references to other functional groups help integrate with other building systems.

Practical Use:

• Use these dimensions for modular coordination to ensure components fit seamlessly.
• Helps in standardizing sizes for cost-effective construction and easier assembly.

Diagram: Coordination Flow

graph TD
  A[Building Components] --> B[Partitions]
  A --> C[Floors]
  A --> D[Ceilings]
  B --> E[Brickwork, Blockwork]
  B --> F[Lintels]
  B --> G[Facing Materials]
  C --> H[Tiles, Access Covers]
  D --> I[False Ceilings]
  D --> J[Lighting Fittings]

Summary: IS 7564 Part 3

IS 7564 Part 3 (1974) - Partitions: Key Specifications

This part deals with co-ordinating dimensions for internal subdivision elements like partitions.

Key Points from Table 1 (Clause 4.1):

• Grading A, B, C indicates priority or importance for coordination.
• Dimensions marked ✓ are recommended for coordination.

Summary:

• Thickness of partitions (brick/block) is critical.
• Height and length are key for brick/block partitions.
• For framed partitions, thickness of framing sections is coordinated.
• Door openings and frames have specific width and height coordination.
• Facing materials and skirting sections have recommended width and height dimensions.

Practical Use:

• Use these coordinating dimensions to ensure modular compatibility between partitions and adjoining components.
• Refer to IS

IS 7564 Part 3 (1974) — Key Specifications for Floors (Functional Group 3 - Internal Subdivision)

Recommended Coordinating Dimensions (from Table 1):

Notes:

• Grading A, B, C indicates priority or importance for dimension coordination.
• Thickness is critical for framing sections.
• Length and width are important for tiles and access covers.
• Height and depth are generally unselected for floors.

Additional Recommendations:

• Use modular coordination to ensure compatibility between floor components and adjoining assemblies.
• For floor tiles, standard sizes (e.g., 300x300 mm, 600x600 mm) are recommended for ease of installation.
• Flooring sections should comply with structural load requirements and material specifications per IS codes relevant to materials used (e.g., IS 456 for concrete floors).

Summary Diagram:

graph TD
    Floors --> Framing_Sections[Sections: Framing (Thickness)]
    Floors --> Boarding_Sections[Sections: Boarding (Width)]
    Floors --> Tiles[Floor Tiles (Length, Width)]
    Floors --> Mosaic[Mosaic (No specific dimensions)]
    Floors --> Access_Covers[Access Covers (Length, Width)]

This coordination ensures functional and dimensional harmony within internal subdivisions as per IS 7564 Part 3.

IS 7564 Part 3 (1974) - Key Specifications for Ceilings

Recommended Co-ordinating Dimensions for False/Suspended Ceilings (Functional Group 3)

Notes:

• Selected means these dimensions are recommended for coordination.
• Height and depth are generally not specified for facing materials and sheets but thickness is important.
• Suspension system depth is critical for installation clearance.
• Lighting and radiant panels need coordination with ceiling framing and thickness.

Practical Tip:

• Use modular coordination based on ceiling tile size (commonly 600x600 mm or 1200x600 mm).
• Suspension grid spacing typically at 600 mm centers.
• Thickness of rigid sheets usually ranges from **6 mm to

Detailed content not available.

IS 7564 Part 3: Application of Modular Coordination - Key Points

1. Concept:

• Modular Coordination means correlating dimensions of two or more building products placed together to perform a function.
• Coordination is needed only when functional integration is necessary.

2. Functional Groups (Clause 2.2):

3. Grading of Components (Clause 3.1):

4. Application:

• Adopt modular coordination only for Grade A and selectively for Grade B components.
• Use coordination to define nominal and working sizes for components.
• Align with international standards (BSPD 6432 Parts 1 & 2) for global compatibility.

Summary Diagram of Coordination Process:

flowchart TD
    A[Identify Functional Group] --> B{Is Coordination Needed?}
    B -- Yes --> C[Assign Grade A or B]
    B -- No --> D[Assign Grade C]
    C --> E[Define Nominal & Working Sizes]
    E --> F[Standardize Components]
    D --> F

This framework ensures efficient dimensioning, interchangeability, and integration of building components.

IS 7564 Part 3 — Cross-References to Other Functional Groups (Functional Group 3: Internal Subdivision)

Key Specifications & Tables:

Table 1 outlines recommended coordinating dimensions for building components and assemblies in internal subdivision, with cross-references to other functional groups.

Notes:

• Grading (A, B, C) indicates quality or type per IS 7564.
• Dimensions marked selected mean they are critical for coordination.
• Cross-references guide integration with other functional groups (e.g., structural, services).

Summary Diagram (Mermaid.js):

graph TD
  A[Internal Subdivision] --> B[Partitions]
  A --> C[Panels]
  A --> D[Door Openings]
  A --> E[Floors]
  A --> F[Ceilings]

  B --> B1[Brickwork]
  B --> B2[Blockwork]
  B --> B3[Lintels]
  B --> B4[Facing Materials]

  D

IS 7564 (Part 3) - Key Recommended Dimensions for Internal Subdivision (Functional Group 3)

The standard provides coordinated dimensions for various building components and assemblies to ensure functional compatibility.

Key Highlights from Table 1 (Clause 4.1):

Notes:

• Grading: A (High coordination), B (Medium), C (Low).
• Dimensions marked "selected" are critical for coordination.
• Cross-reference