IS 13612 (Part 1) : 2000Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

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BS EN 771-1 · ISO 1006 · ASTM C216

CurrentFrequently UsedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

Link points to Internet Archive / others. Not hosted by InfraLens. Details

IS 13612:2000 (Part 1) is the Indian Standard (BIS) for modular co-ordination for normal brickwork - recommendations, part 1: burnt clay bricks. This standard provides recommendations for the dimensional coordination of brickwork using burnt clay bricks. It establishes a basic module of 100 mm and defines standard modular and manufacturing sizes for bricks to promote design flexibility, simplify construction, and reduce material waste on site.

Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

Overview

Status: Current
Usage level: Frequently Used
Domain: Architectural — Planning, Housing and Pre-fabricated Construction
Type: Guidelines

International equivalents

BS EN 771-1:2011+A1:2015 · BSI (British Standards Institution), UK / CEN (European Committee for Standardization)ISO 1006:1983 · ISO (International Organization for Standardization)ASTM C216-21 · ASTM International, USA

Typically used with

IS 1077 IS 2212 IS 1905 IS 2691

Also on InfraLens for IS 13612

4Key values 1Tables 4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

! The core principle is that the manufacturing size (e.g., 190x90x90 mm) plus the nominal 10 mm mortar joint equals the modular size (200x100x100 mm).

! Using modular bricks greatly simplifies setting out and reduces the need for cutting bricks, leading to faster and cleaner work.

! Architects and designers should use modular dimensions (multiples of 100 mm) for openings and wall lengths to fully leverage the benefits of this system.

Frequently referenced clauses

Cl. 3Terminology (Basic module, Modular size, Work size)Cl. 4Basic Module Cl. 5Modular Size of Brick Cl. 6Relationship between Manufacturing Size and Modular Size

burnt clay bricksmasonrymortar

International Equivalents

Similar International Standards

BS EN 771-1:2011+A1:2015BSI (British Standards Institution), UK / CEN (European Committee for Standardization)

MediumCurrent

Specification for masonry units - Part 1: Clay masonry units

Specifies clay brick characteristics, including dimensions, which align with modular principles but doesn't focus on the system itself.

ISO 1006:1983ISO (International Organization for Standardization)

HighCurrent

Building construction — Modular coordination — Basic module

Defines the fundamental principle of the 100 mm basic module (M), which is the foundation of IS 13612.

ASTM C216-21ASTM International, USA

LowCurrent

Standard Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale)

Specifies clay brick properties and dimensions, but is based on imperial units and a different modular concept.

BS 6750:1986BSI (British Standards Institution), UK

HighWithdrawn

Specification for modular co-ordination in building

Provided the UK's framework for modular co-ordination principles, making its purpose highly analogous to IS 13612.

Key Differences

≠IS 13612 recommends a specific standard modular brick size (190x90x90 mm), whereas EN 771-1 accommodates a wide variety of national standard sizes used across Europe (e.g., UK: 215x102.5x65 mm, Germany: 240x115x71 mm).

≠The primary focus of IS 13612 is establishing the *system* of modular co-ordination, while standards like EN 771-1 focus on specifying the *product* (the brick) and its performance characteristics, with dimensions being one aspect.

≠IS 13612 (by reference to IS 1077) specifies dimensional tolerances based on brick class as a percentage deviation. EN 771-1 provides more sophisticated categories (e.g., T1, T2, Tm) allowing manufacturers to declare tolerance levels for different applications.

≠The Indian standard is based on a pure 100 mm module (1M), resulting in coordinating dimensions of 200x100x100 mm. Many European systems, while modular, result in coordinating dimensions like 225x112.5x75 mm, which are multiples of sub-modules (e.g., 25 mm or 12.5 mm).

Key Similarities

≈The fundamental concept of using a basic module (M) of 100 mm is identical to the international standard ISO 1006, which forms the basis for most modern modular systems.

≈All related standards, including IS 13612 and EN 771-1, utilize the core principle of a 'work size' (actual brick dimension) and a 'coordinating size' (brick + mortar joint) to achieve modularity.

≈The primary objective of IS 13612, which is the dimensional rationalization of building components to improve efficiency, is the same underlying goal for all international modular coordination standards.

≈The common assumption of a 10 mm mortar joint to bridge the gap between the work size and the coordinating size is a widely shared practice in both the Indian and many international (especially European) systems.

Parameter Comparison

Parameter	IS Value	International	Source
Basic Module (M)	100 mm	100 mm	ISO 1006:1983
Recommended Modular Brick (Work Size)	190 x 90 x 90 mm	215 x 102.5 x 65 mm (Common UK size)	BS EN 771-1:2011+A1:2015
Recommended Modular Brick (Coordinating Size)	200 x 100 x 100 mm	225 x 112.5 x 75 mm (Common UK size)	BS EN 771-1:2011+A1:2015
Assumed Mortar Joint Thickness	10 mm	10 mm (common design practice)	BS EN 1996-1-1 (Eurocode 6)
Dimensional Tolerance System	Specified as % deviation for different brick classes (as per IS 1077).	Categories based on tolerance range (e.g., T1, T2) or mean deviation (Tm).	EN 771-1:2011+A1:2015
Primary Module Multiple	2M x 1M x 1M (for a 200x100x100mm brick unit)	Not strictly based on 100mm multiples (e.g., 2.25M x 1.125M x 0.75M)	Derived from BS EN 771-1 dimensions

⚠ Verify details from original standards before use

Key Values4

Quick Reference Values

Basic Module (M)100 mm

Standard Modular Brick Size (including mortar joints)200 mm x 100 mm x 100 mm

Standard Manufacturing Brick Size (work size)190 mm x 90 mm x 90 mm

Nominal Mortar Joint Thickness10 mm

Tables & Referenced Sections

Key Tables

Table 1 - Preferred Modular Sizes for Burnt Clay Bricks

Key Clauses

Clause 3 - Terminology (Basic module, Modular size, Work size)

Clause 4 - Basic Module

Clause 5 - Modular Size of Brick

Clause 6 - Relationship between Manufacturing Size and Modular Size

Frequently Asked Questions4

What is the basic module (M) for modular coordination in brickwork?+

The basic module is 100 mm (Clause 4).

What is the standard manufacturing size of a modular brick?+

190 mm x 90 mm x 90 mm (Table 1).

What is the standard modular size of a brick, including mortar joints?+

200 mm x 100 mm x 100 mm (Table 1).

What is the recommended thickness for mortar joints in modular brickwork?+

The nominal thickness is 10 mm (Clause 6.1).

QA/QC Inspection Templates

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QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 13612 (Part 1) : 2000Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

BS EN 771-1 · ISO 1006 · ASTM C216

CurrentFrequently UsedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

Overview

Status: Current
Usage level: Frequently Used
Domain: Architectural — Planning, Housing and Pre-fabricated Construction
Type: Guidelines

International equivalents

Typically used with

IS 1077 IS 2212 IS 1905 IS 2691

Also on InfraLens for IS 13612

4Key values 1Tables 4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

! The core principle is that the manufacturing size (e.g., 190x90x90 mm) plus the nominal 10 mm mortar joint equals the modular size (200x100x100 mm).

! Using modular bricks greatly simplifies setting out and reduces the need for cutting bricks, leading to faster and cleaner work.

! Architects and designers should use modular dimensions (multiples of 100 mm) for openings and wall lengths to fully leverage the benefits of this system.

Frequently referenced clauses

Cl. 3Terminology (Basic module, Modular size, Work size)Cl. 4Basic Module Cl. 5Modular Size of Brick Cl. 6Relationship between Manufacturing Size and Modular Size

burnt clay bricksmasonrymortar

International Equivalents

Similar International Standards

BS EN 771-1:2011+A1:2015BSI (British Standards Institution), UK / CEN (European Committee for Standardization)

MediumCurrent

Specification for masonry units - Part 1: Clay masonry units

Specifies clay brick characteristics, including dimensions, which align with modular principles but doesn't focus on the system itself.

ISO 1006:1983ISO (International Organization for Standardization)

HighCurrent

Building construction — Modular coordination — Basic module

Defines the fundamental principle of the 100 mm basic module (M), which is the foundation of IS 13612.

ASTM C216-21ASTM International, USA

LowCurrent

Standard Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale)

Specifies clay brick properties and dimensions, but is based on imperial units and a different modular concept.

BS 6750:1986BSI (British Standards Institution), UK

HighWithdrawn

Specification for modular co-ordination in building

Provided the UK's framework for modular co-ordination principles, making its purpose highly analogous to IS 13612.

Key Differences

Key Similarities

≈The fundamental concept of using a basic module (M) of 100 mm is identical to the international standard ISO 1006, which forms the basis for most modern modular systems.

≈All related standards, including IS 13612 and EN 771-1, utilize the core principle of a 'work size' (actual brick dimension) and a 'coordinating size' (brick + mortar joint) to achieve modularity.

Parameter Comparison

Parameter	IS Value	International	Source
Basic Module (M)	100 mm	100 mm	ISO 1006:1983
Recommended Modular Brick (Work Size)	190 x 90 x 90 mm	215 x 102.5 x 65 mm (Common UK size)	BS EN 771-1:2011+A1:2015
Recommended Modular Brick (Coordinating Size)	200 x 100 x 100 mm	225 x 112.5 x 75 mm (Common UK size)	BS EN 771-1:2011+A1:2015
Assumed Mortar Joint Thickness	10 mm	10 mm (common design practice)	BS EN 1996-1-1 (Eurocode 6)
Dimensional Tolerance System	Specified as % deviation for different brick classes (as per IS 1077).	Categories based on tolerance range (e.g., T1, T2) or mean deviation (Tm).	EN 771-1:2011+A1:2015
Primary Module Multiple	2M x 1M x 1M (for a 200x100x100mm brick unit)	Not strictly based on 100mm multiples (e.g., 2.25M x 1.125M x 0.75M)	Derived from BS EN 771-1 dimensions

⚠ Verify details from original standards before use

Key Values4

Quick Reference Values

Basic Module (M)100 mm

Standard Modular Brick Size (including mortar joints)200 mm x 100 mm x 100 mm

Standard Manufacturing Brick Size (work size)190 mm x 90 mm x 90 mm

Nominal Mortar Joint Thickness10 mm

Tables & Referenced Sections

Key Tables

Table 1 - Preferred Modular Sizes for Burnt Clay Bricks

Key Clauses

Clause 3 - Terminology (Basic module, Modular size, Work size)

Clause 4 - Basic Module

Clause 5 - Modular Size of Brick

Clause 6 - Relationship between Manufacturing Size and Modular Size

Frequently Asked Questions4

What is the basic module (M) for modular coordination in brickwork?+

The basic module is 100 mm (Clause 4).

What is the standard manufacturing size of a modular brick?+

190 mm x 90 mm x 90 mm (Table 1).

What is the standard modular size of a brick, including mortar joints?+

200 mm x 100 mm x 100 mm (Table 1).

What is the recommended thickness for mortar joints in modular brickwork?+

The nominal thickness is 10 mm (Clause 6.1).

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 13612 (Part 1) : 2000Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

Overview

International Equivalents

Key Values4

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates

IS 13612 (Part 1) : 2000Modular co-ordination for normal brickwork - Recommendations, Part 1: Burnt clay bricks

Overview

International Equivalents

Key Values4

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates