IS 2248:1992 is the Indian Standard (BIS) for glossary of terms relating to clay products for buildings. This standard provides a comprehensive glossary of terms and definitions related to clay products used in building construction, including bricks, roofing tiles, flooring tiles, and hollow clay blocks. It ensures uniform terminology across specifications, contracts, and technical literature in the Indian construction industry.
Glossary of terms relating to clay products for buildings
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Definition of 'Frog' | An indentation or depression on one or more bed faces of a brick, generally to form a key for mortar. | A depression in one or more surfaces of a brick or block. | ASTM C43-21 |
| Term for Traditional Brick | Country Brick/Tile: A product which has not been subjected to a machine process during its manufacture. | No direct equivalent term. 'Common Brick' is used for general purpose brick without special color or texture. | ASTM C43-21 |
| Definition of 'Efflorescence' | A deposit of soluble salts on the surface of a burnt clay product unit. | A deposit of water-soluble salts, usually white, that appear on a surface of masonry or concrete. | ASTM C43-21 |
| Term for a specific Kiln Type | Bull's Trench Kiln: An annular or oval-shaped continuous kiln, commonly used in India. | This term is not defined. Defines 'Tunnel Kiln' and 'Periodic Kiln' as common types. | ASTM C43-21 |
| Definition of 'Perforation' | A small hole or holes passing through or nearly through a brick or a block made during the process of manufacture to reduce its weight. | Holes, passing through or nearly through a masonry unit, for purposes of weight reduction, insulation, or to facilitate handling. | ASTM C43-21 |
| Definition of 'Lamination' | A defect in a burnt clay product manifested by splitting of the unit into thin layers. | A layered separation in a clay product caused by entrapped air during processing. | ASTM C43-21 |
| Grouping of Masonry Units | Not explicitly grouped by performance in the glossary, but by type (e.g., solid, hollow, perforated). | Defines two groups of clay masonry units (Group 1 and Group 2) based on performance characteristics and control levels. | BS EN 771-1:2011+A1:2015 |