IS 1805:1973 is the Indian Standard (BIS) for glossary of terms relating to stones, quarrying and dressing. This standard provides a comprehensive glossary of terms relating to building stones, covering their geological classification, quarrying techniques, and dressing processes. It ensures uniform terminology is used by civil engineers, architects, and geologists when specifying stone materials and finishes.
Glossary of terms relating to stones, quarrying and dressing
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Commercial definition of 'Granite' | Not explicitly defined; uses a strict geological definition of a crystalline igneous rock. | A commercial term for igneous rocks and some metamorphic rocks (e.g., gneiss) that have similar hardness, texture, and are polishable. | ASTM C119-21 |
| Commercial definition of 'Marble' | Not explicitly defined; uses a strict geological definition of a metamorphosed carbonate rock. | Metamorphic rock consisting predominantly of calcite and/or dolomite. Note: Commercially, the term includes other rocks that can be polished and are suitable for decoration. | EN 12670:2019 |
| Term for resin treatment | Absent. The standard does not cover modern large-scale resin treatment of slabs. | Defines 'Resin treated slab' as a slab treated with resin to improve its structural integrity or to fill macroscopic voids. | EN 12670:2019 |
| Definition of 'Honed Finish' | A smooth, matt surface obtained by stopping the polishing process at a stage before the final gloss is produced. | A satin-smooth surface finish with little or no gloss, recommended for commercial floors. | ASTM C119-21 |
| Term for natural splitting in slate | Cleavage: The property of a rock by virtue of which it can be split along parallel planes. | Fissility: Property of a rock to be split along planes determined by its fabric. NOTE: Characteristic property of slate. | EN 12670:2019 |
| Classification of Sandstone | Classified as a Sedimentary rock. Sub-types mentioned include Calcareous, Ferruginous, Siliceous. | Defined geologically. ASTM further groups it commercially under 'Quartz-Based Stone' along with quartzite and bluestone. | ASTM C119-21 |