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

The basic module 'M' is the fundamental unit of size, defined as 100 mm (Clause 3.1).

How can a structural wall be positioned relative to a grid line?

A structural wall can be positioned either with its centreline coinciding with a grid line, or with one of its faces on a grid line (Clause 6.1).

What is the purpose of this standard?

To establish a rationalized basis for positioning structural elements in a building, thereby facilitating dimensional coordination and the use of standardized components.

What is the recommended multi-module for horizontal planning grids?

The preferred horizontal multi-module is 3M, which is equal to 300 mm (Clause 4.2.1).

IS 13613

: 1992

Recommendations for modular coordination in the building industry: Location of structural walls and floor slabs

CurrentSpecializedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

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This standard provides recommendations for the dimensional positioning of structural walls and floor slabs within a modular coordination framework. It establishes principles for aligning these key structural elements with planning and structural grids to promote standardization, industrialization, and the efficient use of prefabricated components in the building industry.

Recommendations for modular coordination in the building industry: Location of structural walls and floor slabs

Quick Reference Values

Basic Module (M)100 mm

Horizontal Controlling Multi-module3M (300 mm)

Vertical Controlling Multi-module1M (100 mm)

Typical planning grid sizemultiples of 3M (300 mm)

Typical storey height referencemultiples of 1M (100 mm)

Practical Notes

This code is essential for architects and engineers working on projects involving precast concrete or other prefabricated systems.

It establishes the critical difference between the planning grid (defining spaces) and the structural grid (defining load-bearing element locations), which must be coordinated.

The entire system is based on the fundamental 100mm 'M' module, which simplifies design, manufacturing, and on-site assembly.