IS 4834:1990 is the Indian Standard (BIS) for steel windows and ventilators. This standard lays down the specific requirements for materials, fabrication, dimensions, hardware, and finishes for steel windows and ventilators used in building construction.
Specifies requirements for materials, dimensions, and fabrication of steel windows and ventilators.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Overall Dimensional Tolerance | ± 1.5 mm for height and width | ± 1.5 mm for height and width | BS 6510:1984 |
| Corner Construction | Mitred and flash-butt or fusion welded, finished flush. | Corners of the frame and casements shall be welded. | BS 6510:1984 |
| Steel Material Specification | Hot-rolled steel sections conforming to IS 1038. | Not specified; performance must be met regardless of material. Steel must conform to a relevant standard like EN 10346 (for coating). | BS EN 14351-1:2006+A2:2016 |
| Corrosion Protection (Shop Primer) | One coat of red oxide zinc chromate primer conforming to IS 2074. | One coat of either metallic lead or zinc chromate priming paint. | BS 6510:1984 |
| Air Permeability Test | Optional test as per IS 1081; no classification or limits defined. | Mandatory testing to EN 1026 for classification (Class 0 to 4). | BS EN 14351-1:2006+A2:2016 |
| Watertightness Test | Not specified or required. | Mandatory testing to EN 1027 for classification (e.g., Class 1A up to 9A). | BS EN 14351-1:2006+A2:2016 |
| Thermal Transmittance (U-value) | Not specified or required. | Mandatory declaration, calculated or tested as per EN ISO 10077-1/2. | BS EN 14351-1:2006+A2:2016 |