Recommendations for modular coordination - principles and rules

IS 10600-1983 (ISO 2848-1974) — Scope & Key Specifications

• Basic Module (M):

  • Defined as 1 M = 100 mm (Clause 6.2).
  • Serves as the fundamental unit for dimensional coordination.

• Multimodules:

  • Multiples of the basic module (e.g., 2M = 200 mm, 3M = 300 mm).
  • Used to reduce the number of coordinating sizes for components.
  • Must be selected according to ISO 1006; arbitrary values are not permitted.

• Non-Modular Sizes:

  • Some components (e.g., thicknesses) may not fit modular increments due to functional/economic reasons.
  • Non-modular sizes can be coordinated by simple fractions (submodules) of the basic module but multimodules/planning modules should not be based on submodules.

• Reference System:

  • A framework of points, lines, and planes for locating components.
  • Used in design and site measurement to ensure dimensional coordination.

Summary Table: Basic Module and Multimodules

flowchart LR
    A[Basic Module (M = 100 mm)] --> B[Multimodules (2M, 3M, ...)]
    B --> C[Component Dimensions]
    A --> D[Reference System]
    D --> E[Design & Site Measurements]
    F[Non-Modular Sizes] --> G[Submodules (fractions of M)]
    G -.-> B

This coordination system ensures dimensional uniformity and reduces complexity in building design and construction.

IS 10600 aligns with ISO 2848-1974, focusing on modular coordination in building construction.

Field of Application (Clause 2)

• Applies to modular coordination of building elements.
• Ensures dimensional coordination for easy assembly and interchangeability.
• Used for planning, design, and manufacturing of building components.

Key Specifications:

• Basic module (M): 100 mm (standard unit for dimensions)
• Dimensions of components are multiples of M or M/2.
• Facilitates standardized dimensions to reduce waste and improve compatibility.

Typical Dimensions Table (based on ISO 2848):

Usage:

• Modular grids for floor plans, facades, and structural elements.
• Enables interchangeability and mass production.

graph LR
A[Basic Module M = 100mm] --> B[Half Module = 50mm]
A --> C[Multiples: 200, 300, 400...]
C --> D[Building Elements]

This modular approach simplifies design and manufacturing, ensuring consistency across projects.

IS 10600 refers to Modular Coordination and aligns definitions with ISO 1791 and ISO 2848 standards.

Key Definitions (per ISO 1791 & ISO 2848 referenced in IS 10600):

• Modular Coordination (MC): A system of standardizing dimensions of building components based on a module (M).
• Module (M): Basic unit of measurement, typically 100 mm.
• Basic Module: The fundamental dimension from which all other dimensions are derived.
• Modular Grid: A layout grid based on multiples of the module for planning and manufacturing.

Important Specifications:

• Module (M) = 100 mm
• Dimensions of components are multiples of M (e.g., 1M = 100 mm, 2M = 200 mm, etc.)
• Tolerances and dimensions conform to ISO 2848:1974.

Example Table: Modular Dimensions

flowchart LR
    A[Module (M) = 100 mm] --> B[Component Dimensions]
    B --> C[Multiples of M]
    C --> D[Standardized Building Components]

Summary: IS 10600 uses ISO 1791 definitions; all dimensions are modular multiples of 100 mm for uniformity in design and construction.

Aims of Modular Co-ordination (IS 10600)

Modular co-ordination aims to standardize building dimensions to simplify design, manufacturing, and construction. Key points:

• Basic Module (M):

  • Defined as 1 M = 100 mm (per ISO 2848 / IS 10600).
  • Forms the fundamental unit for dimensional coordination.

• Multimodules:

  • Multiples of the basic module (e.g., 2M, 3M...).
  • Selected to reduce the variety of sizes while maintaining compatibility.
  • Must conform to international standards, avoiding arbitrary values.

• Reduction of Sizes:

  • Using multimodules and general series reduces the number of coordinating sizes, aiding in modular design efficiency.

• Non-Modular Sizes:

  • Some components may have thicknesses or dimensions based on economic or functional needs, not strictly modular.
  • These can sometimes be coordinated using submodules (fractions of M), but multimodules and planning modules should not be based on submodules.

• Reference System:

  • A system of points, lines, and planes to relate sizes and positions of components.
  • Used in design and site measurement for consistency.

Summary Table

flowchart TD
    A[Basic Module (1 M = 100 mm)] --> B[Multimodules (2M, 3M, ...)]
    B --> C[Reduced number of sizes]
    C --> D[Standardized building components]
    A --> E[Non-Modular Sizes]
    E --> F[Use submodules for coordination]
    D & F --> G[Reference System for layout]

This modular approach ensures dimensional coordination, reduces complexity, and facilitates efficient construction.

IS 10600 - Basis of Modular Co-ordination

Key Concepts:

• Basic Module (M):

  • Defined as 1 M = 100 mm (ISO 1006-1973, ISO 2848-1974)
  • Serves as the fundamental unit for dimensional coordination.

• Multimodules:

  • Multiples of the basic module (e.g., 2M, 3M, 4M, ...)
  • Used to reduce the number of coordinating sizes.
  • Must conform to international standards, not arbitrary.

• Non-Modular Sizes:

  • Some components (e.g., thicknesses) may be non-modular due to functional/economic reasons.
  • Can be coordinated using simple fractions (submodules) of M, but multimodules and planning modules should not be based on submodules.

• Reference System:

  • A system of points, lines, and planes for defining size and position of components.
  • Used during design and site layout.

Summary Table:

Practical Application:

• Use multiples of 100 mm to design modular components.
• Avoid arbitrary sizes; stick to multimodules for coordination.
• Employ reference lines/planes for consistent layout.

flowchart LR
    A[Basic Module (M) = 100 mm] --> B[Multimodules (2M, 3M, 4M...)]
    A --> C[Submodules (e.g., ½ M) for thickness]
    B --> D[Standardized component sizes]
    C --> E[Non-modular components]
    D & E --> F[Reference system for layout]

This ensures dimensional coordination, reduces complexity, and aligns with IS 10600 and ISO standards.

IS 10600: Modules and Multimodules Key Points

• Basic Module (M):

  • Defined as 1 M = 100 mm (per ISO 1006).
  • Serves as the fundamental unit for dimensional coordination.

• Multimodules:

  • Are multiples of the basic module, e.g., 2M = 200 mm, 3M = 300 mm, etc.
  • Must be selected from standardized values, not arbitrarily, to ensure coordination.
  • Used to reduce the number of coordinating sizes in design and construction.

• Use of Multimodular Grids (Clause 8.2.2):

  • Grids spaced by multimodules can differ in each direction (e.g., 2M in X, 3M in Y).
  • Multimodular grids align with basic module lines but can be offset for functional advantages.

• Non-Modular Sizes:

  • Thicknesses or other dimensions may be non-modular due to economic/functional reasons.
  • Submodules (fractions of M) are not used for determining multimodule sizes.

Summary Table: Module and Multimodule Dimensions

graph LR
A[Basic Module (1M = 100mm)] --> B[Multimodule (nM = n × 100mm)]
B --> C[Multimodule Grid X (e.g., 2M)]
B --> D[Multimodule Grid Y (e.g., 3M)]
C & D --> E[Dimensional Coordination in Design]

Use this modular system to achieve efficient, standardized, and coordinated building dimensions.

IS 10600: Coordination of Non-Modular Sizes — Key Points

1. Basic Module (M)

• 1 M = 100 mm (as per ISO 1006 and IS 10600 Clause 6.2)
• Multimodules = integer multiples of M (e.g., 2M = 200 mm, 3M = 300 mm, etc.)

2. Multimodules & Coordination

• Use multimodules to reduce the number of coordinating sizes.
• Sizes should be selected from standard multimodules, not arbitrary.
• Multimodules help coordinate components with at least one dimension matching a functional element.

3. Non-Modular Sizes (Clause 7)

• Some thicknesses and components can't be modular due to economic/functional reasons.
• Non-modular sizes may be coordinated using simple fractional submodules of M, e.g., ½ M = 50 mm, ¼ M = 25 mm.
• However, multimodules and planning modules must NOT be based on submodules.

4. Reference System (Clause 8)

• Use a system of points, lines, and planes as a reference for positioning and sizing.
• This system aids design and site measurement.

Summary Table: Modular Coordination

flowchart LR
    A[Basic Module (1 M = 100 mm)] --> B[Multimodules (2M, 3M, 4M ...)]
    A --> C[Submodules (1/2 M, 1/4 M)]
    B --> D[Component Dimensions]
    C --> E[Non-modular Thickness Coordination]
    F[Reference System] --> D
    F

IS 10600 - Reference System (Clause 8.3) Summary

The Reference System in modular space grids is based on:

• Controlling Planes: Fundamental planes forming the reference for construction elements.
• Controlling Zones: Spaces between controlling planes occupied by building components (floors, walls).
• Controlling Lines: Indicated on drawings (plans, sections, elevations) representing controlling planes.
• Controlling Dimensions: Distances between controlling planes.

Key Points:

• Controlling planes divide the building volume into controlling zones and usable spaces.
• Usable spaces are bounded by floor/ceiling planes horizontally and load-bearing walls/columns vertically.
• The system ensures modular coordination and uniformity in building design.
• Reference to ISO 1040 and ISO 1790-1970 for detailed modular coordination and reference lines.

Typical Application:

Visual Concept (Mermaid Diagram):

graph TD
  A[Controlling Plane 1] -->|Controlling Dimension| B[Controlling Plane 2]
  B -->|Controlling Dimension| C[Controlling Plane 3]
  subgraph Controlling Zones
    D[Zone 1: Floor/Wall Components]
    E[Zone 2: Floor/Wall Components]
  end
  A --> D
  B --> D
  B --> E
  C --> E

This modular reference system ensures systematic placement and coordination of building elements per IS 10600.

IS 10600: Modular Space-Grid Key Points

1. Modular Space-Grid (Clause 8.1)

• A 3D system of planes defining building component locations.
• Distance between planes = basic module or a multimodule.
• Multimodule can differ in X, Y, Z directions.
• Provides a spatial reference framework.

2. Modular Grids (Clause 8.2)

• 2D projections (horizontal/vertical) of the 3D space-grid.
• Multiple modular grids can overlay for various design aspects.
• Ensures continuous referencing for design and construction.

3. Basic Module Grid (Clause 8.2.1)

• Grid lines spaced at the basic module length.
• Reference: ISO 1006 for module definition.

4. Multimodular Grids (Clause 8.2.2)

• Grid lines spaced at multiples of the basic module.
• Multimodule spacing may differ in each grid direction.
• Lines coincide with basic module grid lines but can be offset for design flexibility.

Typical Application Formula:

• Grid spacing = n × basic module (where n = 1, 2, 3, ...)

Visualization:

graph TD
    A[3D Modular Space-Grid] --> B[Planes spaced by basic module or multimodule]
    B --> C[Horizontal Projection: Modular Grid]
    B --> D[Vertical Projection: Modular Grid]
    C --> E[Basic Module Grid (spacing = basic module)]
    C --> F[Multimodular Grid (spacing = n × basic module)]
    D --> E
    D --> F

Summary:
Use basic modules for standard grid spacing; apply multimodules for larger or composite spacing. Modular grids provide clarity and coordination in design drawings and construction.

IS 10600 - Modular Grids Summary

Key Concepts:

• Modular Space-Grid (Clause 8.1):
  A 3D system of planes spaced by a basic module (M) or its multiples (multimodules) in X, Y, Z directions.
• Basic Module Grid (Clause 8.2.1):
  A 2D grid with lines spaced at the basic module M.
• Multimodular Grid (Clause 8.2.2):
  Grid lines spaced at multiples of M (e.g., 2M, 3M), possibly different in X and Y directions, often coinciding with the basic grid lines.

Advantages:

• Provides a continuous reference system for design and coordination.
• Facilitates clear communication between designers and builders.

Typical Usage:

• Superimpose multiple modular grids for different design aspects.
• Displacement of grids may be used for clarity or functional reasons.

Basic Module Grid Spacing:

where n, m = integers (multimodules)

Example:

If M = 1.2 m, then:

• Basic grid lines at 0, 1.2, 2.4, 3.6 m, ...
• Multimodule grid lines at 0, 2.4, 3.6, 4.8 m (2M, 3M, 4M, ...)

graph TD
  A[3D Modular Space Grid] --> B[Horizontal Projection: Modular Grid X]
  A --> C[Vertical Projection: Modular Grid Y]
  B --> D[Basic Module Lines spaced at M]
  B --> E[Multimodule Lines spaced at n×M]
  C --> F[Basic Module Lines spaced at M]
  C --> G[Multimodule Lines spaced at m×M]

Note: Refer to ISO 1006 for detailed basic module definitions.

IS 10600: Basic Module Grid - Key Points

Definitions:

• Basic Module (Clause 6.1):
  The fundamental unit of size in modular coordination. All building components and structures are multiples of this module.

• Basic Module Grid (Clause 8.2.1):
  A grid formed by parallel lines spaced at the basic module distance.

• Modular Space-Grid (Clause 8.1):
  A 3D system of planes spaced at the basic module or multimodule, defining building layout in three directions.

• Multimodular Grid (Clause 8.2.2):
  Grid lines spaced at multiples of the basic module (multimodules), which may vary in different directions.

Key Specifications:

Practical Notes:

• Multimodule spacing can differ by direction.
• Modular grids can be displaced relative to each other for design flexibility.
• Components and building parts must align with these modular lines for coordination.

Visualization:

graph TD
  A[Basic Module Grid] -->|Spacing = M| B[Parallel Lines]
  B --> C[Form 2D Grid]
  C --> D[3D Modular Space Grid]
  D -->|Spacing = M or nM| E[Planes in X, Y, Z directions]
  E --> F[Building Components aligned to grid]

Use this modular system to ensure dimensional coordination, ease of construction, and component interchangeability.

IS 10600 - Multimodular Grids (Clauses 8.1, 8.2, 8.2.1, 8.2.2)

Key Concepts:

• Basic Module Grid: Lines spaced at a uniform basic module distance (Clause 8.2.1).
• Multimodular Grid: Grid lines spaced at multiples of the basic module (multimodules), possibly different in each direction (Clause 8.2.2).
• Modular Space-Grid: 3D system of planes spaced by basic or multimodule distances in X, Y, Z directions (Clause 8.1).

Specifications:

• Multimodule spacing:
  [ d_x = n_x \times m, \quad d_y = n_y \times m ] where:

  • (m) = basic module length
  • (n_x, n_y) = integer multimodule factors for X and Y directions

• Grid lines in multimodular grids typically coincide with basic module grid lines but can be displaced for practical reasons.

Advantages:

• Continuous reference system for coordination.
• Facilitates modular design and dimensioning.
• Allows superimposition of grids for different purposes.

Example Table: Multimodule Spacing

graph TD
  A[Basic Module Grid] --> B[Multimodular Grid]
  B --> C{Spacing}
  C --> D[dx = nx × m]
  C --> E[dy = ny × m]
  B --> F[Displacement of grids for coordination]

Summary: Use multimodular grids by multiplying the basic module by integer factors in each direction, maintaining alignment with the basic grid lines unless displaced for design coordination.

IS 10600 - Interruptions and Displacements of Modular Grids (Clause 8.2.3)

Key Points:

• Interruptions:

  • Modular grids can be interrupted to accommodate dividing elements (walls, shafts).
  • The interruption zone width may be modular (aligned with grid modules) or non-modular (neutral zone).
  • This allows flexibility without losing modular coordination.

• Displacements:

  • When multiple modular grids coexist, they can be displaced relative to each other in one or both directions.
  • Displacement should be chosen to optimize the overall project layout.
  • Example: Offsetting grid lines to align with structural or architectural elements (see Figure 2 in IS 10600).

Related Specifications:

• Basic Module Grid (8.2.1): Grid lines spaced at the basic module dimension (ISO 1006).
• Multimodular Grids (8.2.2): Grids with spacing as multiples of the basic module, possibly different in each direction.

Practical Guidelines:

Visual Concept (Mermaid.js):

graph TD
  A[Basic Module Grid] --> B[Multimodular Grid]
  B --> C[Grid Displacement]
  B --> D[Grid Interruption]
  C --> E[Offset grids in X/Y]
  D --> F[Modular or Neutral Zone]

Summary:
Use modular or neutral zones to interrupt grids and offset grids strategically to improve design coordination. Multimodular grids and displacements enhance flexibility while maintaining modular integrity.

IS 10600 - Controlling Reference System (Clause 8.3 & related)

The controlling reference system in modular coordination is based on:

• Controlling planes: Fundamental reference planes in the modular space grid defining construction elements.
• Controlling zones: Spaces between controlling planes occupied by components (floors, walls, columns).
• Controlling lines: Indicate controlling planes on drawings.
• Controlling dimensions: Distances between controlling planes; key for element sizing and joint locations.

Key points:

• Building volume is divided into controlling zones (occupied by components) and usable spaces (bounded by floors, ceilings, walls).
• Components are located in co-ordinating spaces defined by these planes, including allowances for joints and tolerances.
• Components may be positioned boundary-wise (aligned with controlling planes) or axially (centered between planes).
• Work-sizes of components are derived from co-ordinating sizes, considering manufacturing and erection deviations.
• Preferred multimodular sizes reduce size variation (to be specified in future standards).

Summary Table (Conceptual):

Diagram: Modular Grid & Controlling Planes

graph TD
  A[Controlling Plane 1] --- B[Controlling Zone 1] --- C[Controlling Plane 2] --- D[Controlling Zone 2] --- E[Controlling Plane 3]
  B -->|Occupied by| F[Component 1]
  D -->|Occupied by| G[Component 2]

References:

• ISO 2848-1974 (modular coordination)
• ISO 1790 (modular co-ordination - reference lines)
• ISO 1803 (tolerances vocabulary)

This system ensures standardization, modularity, and ease of construction through controlled dimensions and reference planes.

IS 10600 - Key Points on Preferred Sizes & Controlling Dimensions

1. Controlling Dimensions & Planes

• Building components are located within a "co-ordinating space" defined by reference planes/lines.
• These spaces include allowances for joints and tolerances.
• Controlling planes mark where joints between elements typically occur.
• Components can be located boundary-wise or axially relative to modular lines (see Figures 3 & 4 in IS 10600).

2. Preferred Sizes

• Preferred sizes reduce size variations from modular coordination.
• Use general series of preferred multimodular sizes to simplify design and construction.
• These sizes are derived from modular sizes and include allowances for manufacturing and erection deviations.
• Future standards will specify preferred sizes for various components.

3. References & Related Standards

• Modular coordination principles align with ISO 2848-1974 and IS 7921-1975.
• Tolerances and vocabulary per ISO 1803.
• Modular size systems often use multiples of a base module (e.g., 100 mm).

Typical Modular Coordination Formula:

[ \text{Preferred Size} = n \times M ]

• n = integer multiplier
• M = base module size (e.g., 100 mm)

Summary Table: Modular Location Types

flowchart LR
    A[Reference Planes/Lines] --> B[Co-ordinating Space]
    B --> C[Component Location]
    C --> D[Boundary Plane]
    C --> E[Axial Plane]
    B --> F[Joints & Tolerances]
    C --> G[Preferred Sizes = n × M]

In brief: IS 10600 emphasizes modular coordination using controlling planes and preferred multimodular sizes to streamline building dimensions, reduce variability, and facilitate construction.