What is a bullnose brick as per this standard?

A brick with one or more rounded corners. A single bullnose (Type A) has a standard radius of 40 mm (Clause 4.1, Fig. 1).

What is the angle for a standard squint quoin brick?

The standard angle for a squint quoin is 45 degrees, used for making internal or external corners other than 90 degrees (Clause 4.3.2, Fig. 4).

Does this standard specify the strength of these special bricks?

No, this standard only covers dimensions and shapes. For material properties like compressive strength and water absorption, refer to IS 1077.

What are the basic dimensions of a plinth stretcher brick?

It is a brick with a chamfer on one face, having base dimensions of 190x90x90 mm. The splay detail is specified in Fig. 5 (Clause 4.4.2).

IS 6165

: 1992

Dimensions for unique shapes of clay bricks

CurrentSpecializedSpecificationBIMMaterials Science · Clay and Stabilized Soil Products

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This standard specifies the dimensions, shapes, and tolerances for special types of burnt clay bricks used in construction. It covers shapes such as bullnose, cant, plinth, and squint bricks, providing standardized geometry for architectural and structural detailing based on the modular brick size.

Dimensions for unique shapes of clay bricks

Quick Reference Values

Base modular brick length190 mm

Base modular brick width90 mm

Base modular brick height90 mm or 40 mm

Radius of Single Bullnose Brick (Type A)40 mm

Length of splay on a Cant Brick65 mm

Angle of internal/external Squint Quoin Brick45°

Dimensional tolerance for length± 6 mm

Dimensional tolerance for width/height± 3 mm

Practical Notes

These special shapes are dimensionally based on the standard modular brick size (190x90x90 mm) from IS 1077; ensure coordination with the base bricks being used on site.

The availability of these special shapes can be limited and may require custom orders. Plan procurement well in advance with brick manufacturers.

Achieving a clean aesthetic in exposed brickwork heavily depends on adhering to the dimensional tolerances specified in this standard. It is advisable to check batches upon delivery.