What is the basic module 'M' in modular coordination?

The basic module 'M' is the fundamental unit of size, defined as 100 mm. All building dimensions should ideally be a multiple of this module. (Clause 4.1)

What are some preferred horizontal dimensions for column spacing or room sizes?

Preferred horizontal multimodules include 300 mm (3M), 600 mm (6M), 1200 mm (12M), 3000 mm (30M), and 6000 mm (60M). (Table 1)

What is a modular grid?

It is a grid where the distance between consecutive lines is the basic module (100 mm) or a multimodule. It is used to coordinate the position and size of building components. (Clause 6.2)

What are the recommended floor-to-floor heights?

Preferred vertical dimensions for floor-to-floor heights are multiples of 3M (300 mm), with a strong preference for 30M (3000 mm). (Clause 7.2.2)

IS 10600

: 1983

Recommendations for modular coordination - principles and rules

CurrentFrequently UsedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

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This standard lays down the fundamental principles and rules for modular coordination in building design and construction. It establishes the basic module 'M' as 100 mm, defines preferred sizes (multimodules) for dimensions, and outlines the use of grids for positioning components to promote standardization, interoperability, and efficiency, particularly in prefabricated construction.

Recommendations for modular coordination - principles and rules

Quick Reference Values

Basic Module (M)100 mm

Preferred Horizontal Multimodule (large spans)60M (6000 mm)

Preferred Horizontal Multimodule (column spacing)30M (3000 mm)

Preferred Horizontal Multimodule (components)12M (1200 mm), 6M (600 mm), 3M (300 mm)

Preferred Vertical Multimodule (floor height)3M (300 mm), 6M (600 mm)

Standard preferred floor-to-floor height30M (3000 mm)

Smallest preferred sub-module (vertical)M/5 (20 mm)

Practical Notes

The principles of this code are the foundation for modern Building Information Modeling (BIM) object libraries and grid systems, ensuring components can be coordinated digitally.

Applying modular coordination early in the design stage is crucial for maximizing benefits like reduced waste, faster construction, and cost savings, especially in projects with repetitive elements.

This code is not just for prefabrication; it also rationalizes traditional construction by standardizing dimensions for items like masonry blocks, doors, and windows, minimizing on-site cutting.