IS 6248:1979 is the Indian Standard (BIS) for metal rolling shutters and rolling grills. This standard specifies the requirements for materials, dimensions, construction, and finish of metal rolling shutters and rolling grills. It applies to both manually and mechanically operated shutters and grills used for closing external and internal openings in buildings.
Metal Rolling Shutters and Rolling Grills
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Slat Thickness (Typical Steel) | Prescribed as 1.25 mm (18 SWG) for openings up to 5.5 m. | Performance-based; typically 0.6 mm to 1.9 mm (24 to 14 gauge) depending on required wind load and door size. | DASMA 209-2022 |
| Wind Load Specification | Calculated via formula P = 0.0006 V^2, with V from IS 875. | Product is classified into Wind Load Classes (e.g., Class 2 = 300 Pa, Class 3 = 450 Pa) after testing. | EN 13241:2003+A2:2016 |
| Guide Channel Depth | Prescribed as 65 mm deep for openings up to 5.5 m width. | Not prescribed; engineered based on curtain size and wind load, typically ranging from 50 mm to 150 mm. | DASMA 209-2022 |
| Anti-Drop Safety Device | Recommended ('desirable') for geared shutters. | Mandatory for power-operated doors where a risk of uncontrolled drop exists. | EN 13241:2003+A2:2016 |
| Galvanizing Zinc Coating | Minimum 180 g/m² zinc coating, conforming to IS 277. | References ASTM A653; common classes are G60 (~183 g/m²) or G90 (~275 g/m²). | DASMA 209-2022 |
| Barrel Deflection | Maximum deflection should not exceed 1/400 of the span. | A common design limit is L/360 or L/480 of the span, but it's performance-based to ensure operability. | DASMA 209-2022 |