Recommendations for co-ordination of dimensions in buildings-Arrangements of building components and assemblies, Part 4: Functional group 4 services and drainage

IS 7564 Part 4 - Scope & Key Specifications

• Scope:
  Defines co-ordinating dimensions for building components and assemblies specifically for Functional Group 4 - Services and Drainage. It emphasizes establishing dimensional correlation among products to ensure functional integration.

• Key Definitions:

  • Basic Size (Clause 2.9): Reference size fixing the limits of size.
  • Co-ordination of Dimensions (Clause 3.1): Correlation of two or more products placed together to perform a function.

• Grading of Components:
  Components are graded (A, B, C) based on importance and dimensional control.

• Table 1 Highlights (Clause 4.1):
  Provides recommended co-ordinating dimensions (Length, Width, Height, Depth, Thickness) for various assemblies like boilers, pumps, valves, pipework, heaters, tanks, etc.
  Dimensions marked as:

  • Selected (✓): Dimension to be controlled/coordinated.
  • C/S: Related to cross-section dimension.
  • Unselected (✗): Dimension not critical for coordination.

Example Extract from Table 1 (Heating - Boilers)

Important Notes:

• Co-ordination is essential at the planning stage for functional integration.
• The standard aligns with international practices (BSPD 6432 Parts 1 & 2).
• Applicable to building services such as heating, water supply, drainage, and air conditioning.

flowchart TD
    A[Building Components] --> B[Functional Group 4: Services & Drainage]
    B --> C[Boilers, Pumps, Valves, Pipework, Heaters]
    C --> D[

IS 7564 Part 4 - Key Definitions & Specifications

• Clause 2.0: Defines terms used in the standard for clarity.

• Clause 2.9 - Basic Size:
  Basic Size is the reference size from which permissible size limits are determined.

• Clause 4.1 - Coordinating Dimensions:
  Table 1 provides recommended coordinating dimensions (Length, Width, Height, Depth, Thickness) for building components in Functional Group 4 (Services and Drainage).
  These dimensions ensure compatibility and proper integration of assemblies like boilers, pumps, valves, pipework, heaters, and tanks.

• Grading of Components (Column 4 in Table 1):
  Components are graded A, B, or C based on functional importance and precision required.

Sample Extract from Table 1 (Coordinating Dimensions)

Note:

• "Selected" means dimension is critical for coordination.
• "Unselected" means dimension is not critical.
• C/S = Cross Section reference.

Summary

• Use basic size as a reference for limits.
• Follow grading (A, B, C) to prioritize dimensional control.
• Refer to Table 1 for dimensional coordination to ensure functional compatibility of services and drainage components during planning.

flowchart LR
    A[Basic Size] --> B[Limits of Size]
    C[Component Grading] --> D[Dimensional Control]
    E[Table 1] --> F[Coordination Dimensions]
    B --> F
    D --> F

This ensures smooth integration of building services per IS 7564 Part 4.

IS 7564 Part 4 — Grading of Components and Assemblies

1. Grading of Components (Clause 3.1)

• Grade A: Dimensional coordination is essential.
• Grade B: Dimensional coordination needed in some situations.
• Grade C: No dimensional coordination required.

2. Basic Size (Clause 2.9)

• Reference size fixing limits of size for components.

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

4. Key Notes from Table 1 (Examples)

• C/S: Coordination related to cross-section.
• Selected (✓): Dimension must be coordinated.
• Unselected: Dimension not critical for coordination.

Summary:

• Assign grading based on importance of dimensional coordination.
• Use Table 1 to identify which dimensions (length, width, height

IS 7564 Part 4: Co-ordinating Dimensions of Building Components and Assemblies

Key Points:

• Grading of Components/Assemblies (Clause 3.1):

  • Grade A: Dimensional coordination is essential.
  • Grade B: Coordination needed in some situations.
  • Grade C: No dimensional coordination required.

• Concept:

  • "Co-ordination of dimensions" means establishing correlation between two or more products placed together to perform a function.
  • If no functional relation exists, coordination is unnecessary.

• Dimensions to Coordinate:

  • Length
  • Width
  • Height/Thickness

Coordination Approach:

• Examine the building as a system of components.
• Decide dimensional coordination based on functional necessity and grading.
• Follow international standards (e.g., BSPD 6432 Parts 1 & 2) for functional groups.

Typical Coordination Formula (Conceptual):

For components A and B to fit together:

[ L_A + \Delta = L_B ]

Where:

• (L_A), (L_B) = lengths of components A and B
• (\Delta) = tolerance or gap for assembly/fit

Summary Table: Grading and Coordination Need

flowchart LR
    A[Building Components] --> B{Grade}
    B -->|A| C[Essential Coordination]
    B -->|B| D[Conditional Coordination]
    B -->|C| E[No Coordination Needed]
    C --> F[Coordinate Length, Width, Height]
    D --> F
    E --> G[Independent Dimensions]

Reference: IS 7564 Part 4 emphasizes functional necessity and grading for dimension coordination, aligning with international modular coordination standards.

IS 7564 Part 4 (1975) — Recommended Dimensions for Heating Systems

Key Points from Clause 4.1 & Table 1:

• The standard provides co-ordinating dimensions (Length, Width, Height, Depth, Thickness) for building components related to Heating Systems under Functional Group 4.
• Dimensions are graded (A, B, C) indicating priority or type of coordination.
• Dimensions marked "selected" are recommended for coordination; "C/S" indicates relation to cross-section.

Important Components & Dimensions:

Detailed content not available.

IS 7564 (Part 4) - 1975: Recommended Dimensions for Drainage Systems

This part of IS 7564 provides coordinating dimensions for building components related to services and drainage, ensuring modular coordination (10 cm module).

Key Points for Drainage Systems:

• Functional Group 4 covers drainage and related services.
• Table 1 in Clause 4.1 lists recommended coordinating dimensions (Length, Width, Height, Depth, Thickness) for various components.
• Dimensions are graded (A, B, C) indicating priority and modular coordination level.
• Dimensions marked C/S relate to cross-section coordination.
• Coordination is essential at the planning stage to ensure compatibility and space efficiency.

Typical Drainage Components & Dimensions (Extract):

• Selected means dimension must be coordinated.
• Unselected means dimension is not critical for coordination.

Modular Coordination:

• Use multiples of 10 cm modules for dimensions.
• Ensure drainage pipes and fittings fit within coordinated spaces avoiding clashes.

Summary:

• Refer Table 1, Clause 4.1 for exact dimensions per component.
• Design drainage systems with modular coordination for efficient space use.
• Prioritize components with grading A and B for strict dimension control.

flowchart TD
    A[Planning Stage] --> B[Select Drainage Components]
    B --> C[Refer IS 7564 Table 1]
    C --> D[Apply Modular Dimensions (10 cm)]
    D --> E[Coordinate Length, Width, Height

IS 7564 Part 4 (1975) - Recommended Dimensions for Ventilation and Air Distribution

This part of IS 7564 provides recommended coordinating dimensions for building components related to services and drainage, including ventilation and air distribution systems.

Key Points from Table 1 (Clause 4.1):

• Dimensions are coordinated by Length, Width, Height, Depth, and Thickness.
• For ventilation & air distribution components (like ducts, diffusers, fans), dimensions are modular and coordinated with other building services.
• Dimensions are graded (A, B, C) indicating priority or typical size ranges.
• Coordination with other functional groups (e.g., heating, water supply) is essential.
• Dimensions often relate to cross-section (C/S) for ducts and pipes.

Typical Dimension Coordination for Ventilation Components:

Additional Notes:

• The 10 cm module is the base unit for coordination.
• Coordination ensures space efficiency and ease of installation.
• Dimensions marked selected imply recommended standard sizes.
• Cross-reference with other services (heating, water) for integrated design.

Summary Diagram of Coordination Concept:

graph LR
A[Building Components] --> B[Ventilation Ducts]
A --> C[Heating Systems]
A --> D[Water Supply Pipes]
B --> E[Standardized Dimensions]
C --> E
D --> E
E --> F[Modular Coordination (10 cm module)]

This modular coordination facilitates integrated planning and clash-free installation of ventilation and air distribution systems in buildings.

IS 7564 (Part IV) - 1975: Recommended Dimensions for Electrical Services

This part of IS 7564 provides co-ordinating dimensions for building components related to Functional Group 4 - Services and Drainage, including electrical services.

Key Points from Table 1 (Clause 4.1):

• Electrical Services include components like conduits (withdrawable), room heaters (electric), and related assemblies.
• Dimensions are graded (A, B, C) indicating priority or type.
• Co-ordinating dimensions are given in terms of Length, Width, Height, Depth, Thickness.
• For Electric under-floor conduit (withdrawable):
  • Grading: B
  • Length: Selected
  • Thickness: Selected
  • Width, Height, Depth: Not selected
• For Room heaters (solid fuel, gas, electric, oil):
  • Grading: C
  • Width and Height: Selected
  • Length and Depth: Not selected

General Recommendations:

• Co-ordination of dimensions must be done at the planning stage.
• Dimensions relate to modular coordination based on a 10 cm module.
• Cross-section (C/S) references indicate dimensions related to sectional views.

Summary Table Extract (Electrical):

✔ = Dimension recommended/selected

• = Dimension not selected

Modular Coordination:

• Dimensions are multiples of 100 mm (10 cm).
• Ensures compatibility with other building components.

graph LR
A[Planning Stage] --> B[Select Service Components]
B --> C[Assign Grading (A, B, C)]
C --> D[Apply Coordinating Dimensions]
D --> E[Use 10 cm Modular Units]
E --> F[Ensure Compatibility with Other Groups]

In brief: Use the grading and selected dimensions from

IS 7564 Part 4 - Key Points on Cross-Referencing to Other Functional Groups

1. Functional Groups Overview (Clause 2.2)

• The building is divided into 5 functional groups:
  • Group 1: Structure
  • Group 2: External Envelope
  • Group 3: Internal Subdivision
  • Group 4: Services and Drainage
  • Group 5: Fixtures, Furniture, Equipment

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

• Table 1 lists recommended coordinating dimensions for components in Functional Group 4 (Services & Drainage).
• Dimensions include Length, Width, Height, Depth, Thickness.
• Components like boilers, pumps, pipework, valves, heaters, and tanks have specified coordinating dimensions.
• Cross-references to other functional groups (e.g., 2,3,5) are given to ensure dimensional compatibility.

3. Cross-Referencing Concept

• Coordination ensures components from different functional groups fit and function together.
• Example: Boiler flue pipes (Group 4) cross-reference with chimney throats (Group 2 & 3).
• Markings in Table 1:
  • Selected: dimension critical for coordination.
  • C/S: relates to cross-section coordination.
  • Cross-reference numbers: indicate related functional groups.

4. Practical Use

• Coordination is essential during planning to avoid clashes.
• Use Table 1 to check dimensions and cross-reference before finalizing component sizes.

Sample Extract from Table 1 (Simplified)

Detailed content not available.

IS 7564 Part 4: Tolerances and Joint Clearances Summary

Key Definitions:

• Co-ordinating Space (Clause 2.7): Space allocated to a component including allowances for tolerances and joint clearances.
• Basic Size (Clause 2.9): Reference size from which limits of size are fixed.

Tolerances & Joint Clearances:

• Tolerances are implicitly included in co-ordinating dimensions.
• Joint clearances ensure proper fit and function without interference.
• Coordination is essential during planning to accommodate manufacturing and installation variations.

Recommended Co-ordinating Dimensions (Clause 4.1, Table 1):

• Dimensions are given for Length, Width, Height, Depth, Thickness for various components like boilers, pumps, valves, pipework, heaters, etc.
• Grading (A, B, C) indicates precision and functional importance.
• "C/S" indicates cross-sectional dimensions.
• ":selected:" means dimension is critical and specified.
• ":unselected:" means dimension is not critical or not specified.

Example Table Extract (Simplified):

Practical Notes:

• Use co-ordinating dimensions to set installation spaces.
• Allow for joint clearances based on component grade and function.
• Refer to IS 7564 Part 4 Table 1 for specific component dimensions and tolerances.

flowchart TD
    A[Component Basic Size] --> B[Add Manufacturing Tolerances]
    B --> C[Add Joint Clearances]
    C --> D[Co-ordinating Space Allocated]
    D --> E[Installation & Assembly]

Summary:
IS 756

Detailed content not available.

IS 7564 Part 4 (1975) - Committee & Adoption Details: Key Points

• Functional Groups of Building Components:

  • Group 1: Structure
  • Group 2: External envelope
  • Group 3: Internal subdivision
  • Group 4: Services and drainage
  • Group 5: Fixtures, furniture, and equipment

• Grading of Components for Dimensional Coordination (Clause 3.1):

  Grade	Description
  A	Essential dimensional coordination required
  B	Coordination needed in some situations
  C	No dimensional coordination needed

• Concept:

  • "Co-ordination of dimensions" emphasizes functional correlation between components, not just modular sizing.
  • Coordination applies only when components functionally interact.

• Standards Referenced:

  • BSPD 6432 Part 1 & 2 (British Standards) for functional group coordination.
  • Indian modular coordination standards series for dimension harmonization.

graph TD
    A[Building Components] --> B[Functional Group 1: Structure]
    A --> C[Functional Group 2: External Envelope]
    A --> D[Functional Group 3: Internal Subdivision]
    A --> E[Functional Group 4: Services & Drainage]
    A --> F[Functional Group 5: Fixtures, Furniture & Equipment]

    B --> G[Grade A, B, C]
    C --> G
    D --> G
    E --> G
    F --> G

This framework guides committees in adopting nominal and work sizes based on functional importance and coordination needs.