IS 10521 : 1983collapsible gates

Q: What are the specified materials for a collapsible gate?

Mild steel conforming to IS 226 or IS 2062 for channels/pickets, and cast iron for bottom rollers (Clause 3).

Q: What is the maximum allowed gap between the vertical pickets?

The centre-to-centre spacing of pickets shall not exceed 120 mm when the gate is fully drawn (Clause 4.1).

Q: What kind of surface finish is required?

The standard specifies one coat of red oxide zinc chromate primer (IS 2074) followed by two coats of synthetic enamel paint (IS 2932), or hot-dip galvanizing as options (Clause 6).

Q: What are the key constructional components?

Key components are vertical picket channels, top and bottom guide rails, cast iron or ball-bearing bottom rollers, top guide rollers, and a locking mechanism (Clause 4).

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BS EN 1627 · AS 5039 · SANS 1022

CurrentSpecializedSpecificationBIMArchitectural · Doors, Windows and Shutter

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IS 10521:1983 is the Indian Standard (BIS) for collapsible gates. This standard specifies the requirements for materials, dimensions, fabrication, finish, and installation of steel collapsible gates. It aims to ensure structural integrity, smooth operation, and adequate security for use in buildings and other premises.

collapsible gates

Overview

Status: Current
Usage level: Specialized
Domain: Architectural — Doors, Windows and Shutter
Type: Specification

International equivalents

BS EN 1627:2021 · BSI (British Standards Institution), UK / CEN (European Committee for Standardization), Europe AS 5039-2008 · Standards Australia, Australia SANS 1022:2007 · SABS (South African Bureau of Standards), South Africa LPS 1175 Issue 8 · LPCB (Loss Prevention Certification Board), UK

Typically used with

IS 226 IS 2062 IS 2074 IS 2932 IS 1363

Also on InfraLens for IS 10521

6Key values 2Tables 4FAQs

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

Practical Notes

! Verify gate operates smoothly without jamming; check that all rollers are in contact with the guide rails and rotate freely.

! Inspect the paint or galvanized finish for uniform coverage, paying close attention to welds and joints to prevent premature rusting.

! Ensure the locking arrangement is robust, aligns correctly, and the gate can be secured firmly.

Frequently referenced clauses

Cl. 3Materials Cl. 4Construction Cl. 5Dimensions and Tolerances Cl. 6Finish Cl. 8Marking

steelmild steelcast iron

International Equivalents

Similar International Standards

BS EN 1627:2021BSI (British Standards Institution), UK / CEN (European Committee for Standardization), Europe

MediumCurrent

Pedestrian doorsets, windows, curtain walling, grilles and shutters - Burglar resistance - Requirements and classification

Covers security grilles but is performance-based (testing resistance) rather than prescriptive (specifying dimensions).

AS 5039-2008Standards Australia, Australia

MediumCurrent

Security screen doors and security window grilles

Specifies performance requirements for security grilles, overlapping in application but not in the specific collapsible design.

SANS 1022:2007SABS (South African Bureau of Standards), South Africa

HighCurrent

Standard specification for expanding security gates for domestic premises

Directly addresses expanding/collapsible security gates, although it is more performance-oriented than the IS code.

LPS 1175 Issue 8LPCB (Loss Prevention Certification Board), UK

LowCurrent

Requirements and testing procedures for the LPCB approval and listing of intruder resistant building components

A pure security testing standard, not a manufacturing code, but used to certify the performance of such gates in the UK.

Key Differences

≠IS 10521 is a prescriptive standard, defining exact minimum dimensions for components (e.g., picket size 20x5 mm). Most international equivalents like EN 1627 are performance-based, specifying the level of attack the gate must withstand rather than how it is constructed.

≠International standards like BS EN 1627 and LPS 1175 provide graded security classifications (e.g., RC1 to RC6), allowing for different levels of security. IS 10521 specifies a single, uniform design without security tiers.

≠IS 10521 specifies Indian domestic material grades (e.g., mild steel to IS 2062). International standards reference their respective regional material specifications (e.g., EN, ASTM) and often allow a wider range of materials like aluminum, provided performance tests are passed.

≠Locking system requirements in IS 10521 are basic (e.g., hasp and staple for a padlock), whereas standards like EN 1627 include detailed requirements for lock cylinders and hardware as an integral part of the security rating.

Key Similarities

≈The fundamental purpose of both the Indian and international standards is to specify requirements for a physical security barrier to prevent unauthorized access through building openings.

≈The basic design principle of a collapsible trellis or lattice gate, running on top and/or bottom tracks, is common to both the IS code and products designed to meet international standards.

≈Mild steel is the primary material specified in IS 10521 and remains a common and accepted material for gates manufactured under international standards, especially for higher security ratings.

≈All relevant standards, implicitly or explicitly, emphasize the critical importance of securely anchoring the gate's frame and tracks to the surrounding building structure (wall, floor, lintel).

Parameter Comparison

Parameter	IS Value	International	Source
Evaluation Method	Prescriptive: Conformance to specified dimensions and materials.	Performance: Physical attack testing with defined toolsets and time limits to achieve a resistance class.	BS EN 1627:2021
Vertical Picket Spacing (Extended)	Max. 120 mm between any two pickets.	Typically <120 mm to prevent head entry, but defined by performance testing rather than a fixed rule.	SANS 1022:2007
Picket Material & Size	Mild Steel, min. 20 mm x 5 mm flats or 10 mm dia. bars.	Not specified; manufacturer's choice of material and size to meet a target security rating (RC class).	BS EN 1627:2021
Primary Material	Mild steel conforming to IS 226 / IS 2062.	Steel, aluminum, or their alloys. Material must meet performance requirements.	BS EN 1627:2021
Corrosion Protection	One coat of specified primer (e.g., red oxide zinc chromate).	Performance-based, e.g., must pass a neutral salt spray test (per ISO 9227) for a specified number of hours.	General practice for CE/UKCA marking
Rollers	Min. 25 mm dia. cast iron or mild steel.	Material not specified (often steel bearings or engineering plastics); must ensure smooth operation and durability.	General Manufacturing Practice
Security Levels	One single standard specification.	Multiple classes (e.g., RC1, RC2, RC3) based on resistance to different attack tools and durations.	BS EN 1627:2021

⚠ Verify details from original standards before use

Key Values6

Quick Reference Values

Minimum thickness of mild steel sheet for pickets1.25 mm

Nominal thickness of vertical channel section for gate frame2.0 mm

Maximum centre-to-centre spacing of pickets (fully extended)120 mm

Minimum diameter of cast iron bottom rollers40 mm

Minimum width of top and bottom channel sections40 mm

Minimum overlap of leaves in closed position for double leaf gates40 mm

Tables & Referenced Sections

Key Tables

Table 1 - Dimensions of Channels and Pickets for Collapsible Gates

Table 2 - Dimensions for Rollers and Guides

Key Clauses

Clause 3 - Materials

Clause 4 - Construction

Clause 5 - Dimensions and Tolerances

Clause 6 - Finish

Clause 8 - Marking

Frequently Asked Questions4

What are the specified materials for a collapsible gate?+

Mild steel conforming to IS 226 or IS 2062 for channels/pickets, and cast iron for bottom rollers (Clause 3).

What is the maximum allowed gap between the vertical pickets?+

The centre-to-centre spacing of pickets shall not exceed 120 mm when the gate is fully drawn (Clause 4.1).

What kind of surface finish is required?+

The standard specifies one coat of red oxide zinc chromate primer (IS 2074) followed by two coats of synthetic enamel paint (IS 2932), or hot-dip galvanizing as options (Clause 6).

What are the key constructional components?+

Key components are vertical picket channels, top and bottom guide rails, cast iron or ball-bearing bottom rollers, top guide rollers, and a locking mechanism (Clause 4).

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 10521 : 1983collapsible gates

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

BS EN 1627 · AS 5039 · SANS 1022

CurrentSpecializedSpecificationBIMArchitectural · Doors, Windows and Shutter

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

collapsible gates

Overview

Status: Current
Usage level: Specialized
Domain: Architectural — Doors, Windows and Shutter
Type: Specification

International equivalents

Typically used with

IS 226 IS 2062 IS 2074 IS 2932 IS 1363

Also on InfraLens for IS 10521

6Key values 2Tables 4FAQs

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

Practical Notes

! Verify gate operates smoothly without jamming; check that all rollers are in contact with the guide rails and rotate freely.

! Inspect the paint or galvanized finish for uniform coverage, paying close attention to welds and joints to prevent premature rusting.

! Ensure the locking arrangement is robust, aligns correctly, and the gate can be secured firmly.

Frequently referenced clauses

Cl. 3Materials Cl. 4Construction Cl. 5Dimensions and Tolerances Cl. 6Finish Cl. 8Marking

steelmild steelcast iron

International Equivalents

Similar International Standards

BS EN 1627:2021BSI (British Standards Institution), UK / CEN (European Committee for Standardization), Europe

MediumCurrent

Pedestrian doorsets, windows, curtain walling, grilles and shutters - Burglar resistance - Requirements and classification

Covers security grilles but is performance-based (testing resistance) rather than prescriptive (specifying dimensions).

AS 5039-2008Standards Australia, Australia

MediumCurrent

Security screen doors and security window grilles

Specifies performance requirements for security grilles, overlapping in application but not in the specific collapsible design.

SANS 1022:2007SABS (South African Bureau of Standards), South Africa

HighCurrent

Standard specification for expanding security gates for domestic premises

Directly addresses expanding/collapsible security gates, although it is more performance-oriented than the IS code.

LPS 1175 Issue 8LPCB (Loss Prevention Certification Board), UK

LowCurrent

Requirements and testing procedures for the LPCB approval and listing of intruder resistant building components

A pure security testing standard, not a manufacturing code, but used to certify the performance of such gates in the UK.

Key Differences

Key Similarities

≈The fundamental purpose of both the Indian and international standards is to specify requirements for a physical security barrier to prevent unauthorized access through building openings.

≈The basic design principle of a collapsible trellis or lattice gate, running on top and/or bottom tracks, is common to both the IS code and products designed to meet international standards.

≈Mild steel is the primary material specified in IS 10521 and remains a common and accepted material for gates manufactured under international standards, especially for higher security ratings.

≈All relevant standards, implicitly or explicitly, emphasize the critical importance of securely anchoring the gate's frame and tracks to the surrounding building structure (wall, floor, lintel).

Parameter Comparison

Parameter	IS Value	International	Source
Evaluation Method	Prescriptive: Conformance to specified dimensions and materials.	Performance: Physical attack testing with defined toolsets and time limits to achieve a resistance class.	BS EN 1627:2021
Vertical Picket Spacing (Extended)	Max. 120 mm between any two pickets.	Typically <120 mm to prevent head entry, but defined by performance testing rather than a fixed rule.	SANS 1022:2007
Picket Material & Size	Mild Steel, min. 20 mm x 5 mm flats or 10 mm dia. bars.	Not specified; manufacturer's choice of material and size to meet a target security rating (RC class).	BS EN 1627:2021
Primary Material	Mild steel conforming to IS 226 / IS 2062.	Steel, aluminum, or their alloys. Material must meet performance requirements.	BS EN 1627:2021
Corrosion Protection	One coat of specified primer (e.g., red oxide zinc chromate).	Performance-based, e.g., must pass a neutral salt spray test (per ISO 9227) for a specified number of hours.	General practice for CE/UKCA marking
Rollers	Min. 25 mm dia. cast iron or mild steel.	Material not specified (often steel bearings or engineering plastics); must ensure smooth operation and durability.	General Manufacturing Practice
Security Levels	One single standard specification.	Multiple classes (e.g., RC1, RC2, RC3) based on resistance to different attack tools and durations.	BS EN 1627:2021

⚠ Verify details from original standards before use

Key Values6

Quick Reference Values

Minimum thickness of mild steel sheet for pickets1.25 mm

Nominal thickness of vertical channel section for gate frame2.0 mm

Maximum centre-to-centre spacing of pickets (fully extended)120 mm

Minimum diameter of cast iron bottom rollers40 mm

Minimum width of top and bottom channel sections40 mm

Minimum overlap of leaves in closed position for double leaf gates40 mm

Tables & Referenced Sections

Key Tables

Table 1 - Dimensions of Channels and Pickets for Collapsible Gates

Table 2 - Dimensions for Rollers and Guides

Key Clauses

Clause 3 - Materials

Clause 4 - Construction

Clause 5 - Dimensions and Tolerances

Clause 6 - Finish

Clause 8 - Marking

Frequently Asked Questions4

What are the specified materials for a collapsible gate?+

Mild steel conforming to IS 226 or IS 2062 for channels/pickets, and cast iron for bottom rollers (Clause 3).

What is the maximum allowed gap between the vertical pickets?+

The centre-to-centre spacing of pickets shall not exceed 120 mm when the gate is fully drawn (Clause 4.1).

What kind of surface finish is required?+

The standard specifies one coat of red oxide zinc chromate primer (IS 2074) followed by two coats of synthetic enamel paint (IS 2932), or hot-dip galvanizing as options (Clause 6).

What are the key constructional components?+

Key components are vertical picket channels, top and bottom guide rails, cast iron or ball-bearing bottom rollers, top guide rollers, and a locking mechanism (Clause 4).

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 10521 : 1983collapsible gates

Overview

International Equivalents

Key Values6

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates

IS 10521 : 1983collapsible gates

Overview

International Equivalents

Key Values6

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates