What is the minimum lath thickness for a standard push-pull shutter?

0.90 mm for openings up to 3000 mm wide, or 1.20 mm for openings between 3000 mm and 4500 mm (Table 1).

When is a gear-operated shutter necessary?

It is generally recommended for shutters exceeding 10 m² in area to ensure ease of operation (Clause 1.3).

What steel is specified for the shutter laths?

Cold-rolled low carbon steel sheets or strips conforming to IS 513 or IS 1079 (Clause 3.1).

What is the standard paint finish required?

A coat of red oxide zinc chromate primer followed by two finishing coats of synthetic enamel paint, unless specified otherwise by the purchaser (Clause 13).

IS 7452

: 2009

Steel Rolling Shutters and Rolling Grills

CurrentFrequently UsedSpecificationBIMArchitectural · Doors, Windows and Shutters

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This standard specifies the requirements for materials, fabrication, dimensions, and performance of steel rolling shutters and rolling grills. It covers various types like push-pull and gear-operated, detailing construction aspects from laths and barrels to guides and locking arrangements, primarily for external or internal openings in buildings.

Specifies requirements for materials, fabrication, and installation of steel rolling shutters and grills.

Quick Reference Values

Minimum lath thickness for push-pull shutter up to 3m width0.90 mm

Minimum lath thickness for gear-operated shutter up to 7.5m width1.20 mm

Maximum permissible deflection under wind loadspan / 325

Minimum yield strength for cold rolled steel sheets (laths)240 MPa

Minimum yield strength for structural steel sections (guides)250 MPa

Maximum recommended area for push-pull type shutter10 m²

Practical Notes

Ensure guide channels are installed perfectly plumb and parallel to prevent shutter jamming and premature wear.

Always specify lath thickness based on both the opening width (as per Table 1) and the anticipated wind pressure for the building's location to prevent failure.

Regular lubrication of guides, springs, and gearing mechanisms is crucial for smooth operation and extending the shutter's service life.