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IS 6248 : 1979Metal Rolling Shutters and Rolling Grills

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EN 13241 · DASMA 209 · AS/NZS 4505
CurrentFrequently UsedSpecificationBIMArchitectural · Doors, Windows and Shutter
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Link points to Internet Archive / others. Not hosted by InfraLens. Details
OverviewValues6InternationalTablesFAQ4Related

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

Overview

Status
Current
Usage level
Frequently Used
Domain
Architectural — Doors, Windows and Shutter
Type
Specification
Amendments
Amendment No. 1 (August 1988); Amendment No. 2 (June 1993)
International equivalents
EN 13241:2003+A2:2016 · CEN (European Committee for Standardization), EuropeDASMA 209-2022 · Door & Access Systems Manufacturers Association (DASMA), USAAS/NZS 4505:2012 · Standards Australia / Standards New Zealand, Australia/New Zealand
Typically used with
IS 226IS 513IS 1079IS 1977IS 2062IS 4454
Also on InfraLens for IS 6248
6Key values3Tables4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes
! Ensure guide channels are adequately embedded in the masonry or concrete structure (typically min. 75mm) for security and stability.
! For exterior shutters, specifying weather strips at the top, bottom, and guides significantly improves protection against rain and dust.
! Regular maintenance, especially lubrication of the springs and guide rails, is critical for smooth operation and preventing jamming or failure.
Frequently referenced clauses
Cl. 3MaterialsCl. 5ConstructionCl. 6Dimensions and TolerancesCl. 8Workmanship and Finish
Pulled from IS 6248:1979. Browse the full clause & table index below in Tables & Referenced Sections.
Updates & Amendments2 amendments
Amendment No. 1 (August 1988)
Amendment No. 2 (June 1993)
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
steelaluminumrolling shuttersrolling grills

International Equivalents

Similar International Standards
EN 13241:2003+A2:2016CEN (European Committee for Standardization), Europe
MediumCurrent
Industrial, commercial, garage doors and gates - Product standard, performance characteristics
Covers rolling shutters but is a modern, performance-based standard focusing on safety and characteristics rather than prescriptive dimensions.
DASMA 209-2022Door & Access Systems Manufacturers Association (DASMA), USA
HighCurrent
Standard for Rolling Doors
Directly addresses the design, material, and construction of commercial and industrial rolling steel doors, similar to the IS code's intent.
BS 7384:1990British Standards Institution (BSI), UK
HighWithdrawn
Specification for metal rolling shutters and grilles
A prescriptive standard from a similar era that specified materials and construction for rolling shutters, closely mirroring the IS code's approach.
AS/NZS 4505:2012Standards Australia / Standards New Zealand, Australia/New Zealand
MediumCurrent
Garage doors and other large access doors
Includes rolling shutters within a broader category, with a strong emphasis on performance requirements like wind loading and operational safety.
Key Differences
≠IS 6248 is a prescriptive standard, dictating specific material thicknesses and component dimensions based on shutter size. Modern standards like EN 13241 are performance-based, requiring the final product to meet specific performance classes (e.g., wind load, durability, safety) regardless of construction method.
≠Modern international standards (e.g., EN 13241, AS/NZS 4505) mandate comprehensive safety features for power-operated doors, such as safety edges, photocells, and anti-drop devices. IS 6248 only provides a 'desirable' recommendation for a safety device on geared shutters.
≠Standards like EN 13241 require CE marking and a Declaration of Performance for market access in the EU, which involves rigorous third-party testing and factory production control. Compliance with IS 6248 is typically for local tenders or contractual requirements without a similar mandatory certification scheme.
≠International standards have detailed and classified wind load performance requirements (e.g., Classes 1-5 in EN 13241). IS 6248 provides a basic formula for wind pressure calculation but lacks a formal classification system for the finished shutter's resistance.
Key Similarities
≈All standards cover the same fundamental components of a rolling shutter: curtain slats, guide channels, barrel assembly, and bottom rail, recognizing their essential roles in the shutter's function.
≈Both IS 6248 and its international counterparts specify requirements for corrosion protection of steel components, typically through galvanizing or painting, to ensure long-term durability.
≈The primary materials of construction are consistent across the standards, with a focus on mild steel, galvanized steel, and to a lesser extent, aluminum for the shutter curtain and key components.
≈All standards acknowledge and provide provisions for different methods of operation, including manual (push-pull, hand chain, crank) and power-operated (motorized) systems.
Parameter Comparison
ParameterIS ValueInternationalSource
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 SpecificationCalculated 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 DepthPrescribed 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 DeviceRecommended ('desirable') for geared shutters.Mandatory for power-operated doors where a risk of uncontrolled drop exists.EN 13241:2003+A2:2016
Galvanizing Zinc CoatingMinimum 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 DeflectionMaximum 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
⚠ Verify details from original standards before use

Key Values6

Quick Reference Values
Minimum thickness of MS slats (up to 3.5m width)0.90 mm
Minimum thickness of MS slats (over 3.5m to 7.5m width)1.25 mm
Minimum thickness of MS guide channels3.15 mm
Minimum thickness of hood cover (up to 3.5m width)0.80 mm
Minimum depth of guide channel engagement for slats40 mm
Minimum weight of MS helical springs8 kg/m

Tables & Referenced Sections

Key Tables
Table 1 - Dimensions for Interlocked Slats (Laths), Guide Channels and Bottom Bar for Rolling Shutters
Table 2 - Recommended Dimensions for Winding Shafts for Rolling Shutters
Table 3 - Minimum Thickness of Hood Covers for Rolling Shutters
Key Clauses
Clause 3 - Materials
Clause 5 - Construction
Clause 6 - Dimensions and Tolerances
Clause 8 - Workmanship and Finish

Related Resources on InfraLens

Cross-Referenced Codes
IS 226:1975Structural Steel (Standard Quality)
→
IS 513:2018Cold Rolled Low Carbon Steel Sheets and Strip...
→
IS 1079:2017Hot Rolled Carbon Steel Sheets and Strips
→
IS 1977:2018Structural Steel (Ordinary Quality)
→
IS 2062:2011Hot Rolled Medium and High Tensile Structural...
→
IS 4454:2018Stainless Steel Wire for Springs
→

Frequently Asked Questions4

What is the standard thickness for a mild steel rolling shutter slat (lath)?+
For shutters up to 3.5m wide, the minimum thickness is 0.90 mm (20 SWG). For widths between 3.5m and 7.5m, it is 1.25 mm (18 SWG) as per Table 1.
What is the minimum thickness for the guide channels?+
The guide channels for mild steel shutters must have a minimum thickness of 3.15 mm as per Clause 5.4.1 and Table 1.
What are the painting requirements for mild steel shutters?+
All mild steel parts, unless galvanized, must be cleaned and applied with at least one coat of red oxide zinc chromate primer conforming to IS 2074 (Clause 8.1).
Does this standard cover gear-operated shutters?+
Yes, it covers both manually operated (push-pull and mechanical winding handle) and gear-operated shutters (Clause 5.7).

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