What is the value of the basic module 'M' in Indian standards?

The basic module 'M' is defined as 100 mm (Clause 3.1).

What are the preferred multimodules for horizontal dimensions?

The preferred horizontal multimodules are 3M (300mm), 6M (600mm), 12M (1200mm), 15M (1500mm), 30M (3000mm), and 60M (6000mm) (Table 1).

What are submodular increments used for?

Submodular increments, like M/2 (50 mm) and M/4 (25 mm), are used for sizing smaller components or when finer dimensional adjustments are necessary within the modular framework (Clause 5).

Is this standard mandatory for all buildings?

No, it provides 'Recommendations' and serves as a guideline. It becomes mandatory only when explicitly specified in project requirements or contracts.

IS 10316

: 1986

Recommendations for modular co-ordination: basic module and submodular increments (Equivalent to ISO 1006 and ISO 651: 1982)

CurrentSpecializedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

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This standard provides recommendations for modular coordination in building, establishing the fundamental principles for dimensional standardization. It defines the basic module (M) as 100 mm and specifies preferred multimodules (multiples of M) and submodular increments (fractions of M) to coordinate the dimensions of building components and spaces, facilitating prefabrication and design efficiency.

Recommendations for modular co-ordination: basic module and submodular increments (Equivalent to ISO 1006 and ISO 651: 1982)

Quick Reference Values

Basic Module (M)100 mm

Preferred Horizontal Multimodules3M, 6M, 12M, 15M, 30M, 60M

Preferred Vertical Multimodules3M, 6M, 12M

First preference submodular incrementM/2 (50 mm)

Second preference submodular incrementM/4 (25 mm)

Practical Notes

The basic module 'M' (100 mm) is the fundamental unit for planning grids, not a tolerance. Component work sizes must account for joints and tolerances within these grid lines.

This standard is critical for designers of prefabricated or system buildings to ensure interoperability between components from different sources.

Adherence to these modular principles is a foundational step for effective BIM implementation, as it standardizes component libraries and simplifies model coordination.