Steel wardrobes (adjustable type)-Specification

IS 3497: Scope Summary

• Scope: Specifies requirements for steel wardrobes (adjustable type) including materials, sizes, construction, and finish.
• Applies to wardrobes with or without lockers.
• Covers sheet steel components (Clause 8.1).
• Aluminium tubes used must conform to IS 1285:1975 (Clause 3.1).
• Technical information must be provided by purchaser when ordering (Clause 9.1).
• Rounding off test results follows IS 2:1960 rules.

Key Points:

Reference:

• Annex A lists related Indian Standards necessary for compliance.
• Paint tests removed; now covered under separate paint standards.

This scope ensures uniformity in design and quality of steel wardrobes under IS 3497.

IS 3497: References Summary & Key Specifications

Purpose:
IS 3497 specifies materials, sizes, construction, and finishes for adjustable steel wardrobes.

Key Reference Standards (Annex A)

Important Notes:

• Rounding off: Follow IS 2:1960 rules for rounding test results.
• Marking: Steel wardrobes may carry the BIS Standard Mark under Clause 11.1.1.
• Quality Assurance: BIS supervises inspection, testing, and quality control.
• Revision History: First published 1966, revised 1978 (dimensions & tolerances updated, paint tests removed).

Quick Reference Table: Welding & Paint Standards

IS 3497 - Materials Specifications Summary

1. Sheet Steel Components (Clause 8.1)

• Steel sheets must conform to IS 513:1986 or IS 1079:1988 for mild steel.
• Typical thicknesses and mechanical properties are specified in these referenced standards.
• Surface finish and corrosion resistance as per purchaser’s requirements.

2. Aluminium Tubes (Clause 3.1)

• Aluminium tubes must conform to IS Designations 62400, 63400, or 65032 of IS 1285:1975.
• These standards specify chemical composition, mechanical properties, and dimensional tolerances.

3. Mild Steel Sheets (Clause 3.3)

• Must comply with IS 1079:1988 or IS 513:1986.
• Typical properties include:
  • Yield strength: ~250 MPa
  • Tensile strength: ~410-550 MPa
  • Thickness range: 0.5 mm to 3 mm (typical)

4. Rounding Off (Clause 9.1)

• Follow IS 2:1960 for rounding numerical values.
• Retain significant figures equal to those in the specified values.

Quick Reference Table: Material Standards

flowchart LR
    A[Order Placement] --> B[Purchaser supplies technical info (Clause 9.1)]
    B --> C[Material Selection]
    C --> D[Aluminium Tubes (IS 1285)]
    C --> E[Mild Steel Sheets (IS 513/1079)]
    D & E --> F[Manufacturing per IS 3497]

Note: For detailed mechanical properties and dimensional tolerances, refer to the respective IS standards cited above.

IS 3497: Dimensions and Tolerances for Steel Wardrobes

Key Dimensions (Clause 4.1)

Minimum Clearances for Installation

Notes:

• Screws must conform to IS 1365:1978.
• Dimensions must not deviate beyond ±5 mm.
• Width is customizable per purchaser-manufacturer agreement.
• Clearances ensure ease of fitting wardrobes into recesses.

Summary

• Height: 1980 ±5 mm
• Depth: 480 or 610 ±5 mm
• Width: As agreed ±5 mm
• Installation clearances: Top 20 mm, Sides 10 mm, Depth 5 mm

This ensures uniformity and ease of installation in typical residential or commercial settings.

IS 3497: Construction and Components – Key Points

1. Sheet Steel Components (Clause 8.1)

• Steel sheets used must conform to relevant IS standards for thickness, strength, and finish.
• Typical thickness: 0.8 mm to 1.2 mm for wardrobe panels.
• Components include doors, shelves, and locker parts, requiring corrosion-resistant finishes (e.g., powder coating).

2. Aluminium Tubes (Clause 3.1)

• Tubes must comply with IS 1285:1975, specifically:
  • IS Designations 62400, 63400, or 65032.
• Commonly used for wardrobe frames or support rods.
• Aluminium tubes must have adequate strength and corrosion resistance.

3. Technical Information (Clause 9.1)

• Purchaser must provide:
  • Dimensions,
  • Material specifications,
  • Finish requirements,
  • Load or usage conditions.

4. Rounding Off (IS 2:1960)

• Final test or calculation values must be rounded to the same significant figures as specified.

Typical Steel Wardrobe Construction Table (Example)

graph TD
    A[Steel Wardrobe] --> B[Sheet Steel Components]
    A --> C[Aluminium Tubes]
    B --> D[Body Panels]
    B --> E[Doors]
    B --> F[Lockers]
    C --> G[Support Rods]

For detailed design, refer to IS 3497 clauses and IS 1285 for aluminium tubes.

IS 3497 - Assembly Methods for Steel Wardrobes: Key Points

• Clause 6.1: Assembly is done by bolting or welding.
• Clause 8.1: Sheet steel components must be properly joined as per the standard.
• Screws: Must conform to IS 1365:1978 for dimensions and mechanical properties.
• Dimensions & Tolerances: Purchaser must provide technical details (Clause 9.1). Rounding off test results follows IS 2:1960 rules.

Typical Assembly Specifications:

Important Notes:

• Ensure tight fit and alignment of sheet steel components before assembly.
• Use appropriate fasteners (size, grade) as per IS 1365.
• Welding should ensure no distortion and maintain structural integrity.

flowchart LR
    A[Sheet Steel Components] --> B{Assembly Method}
    B --> C[Bolting (IS 1365)]
    B --> D[Welding (IS 816 / IS 9595)]
    C --> E[Screws & bolts per IS 1365]
    D --> F[Welding quality & finish]

For detailed welding procedures and bolt sizes, refer to IS 816 and IS 1365 respectively.

IS 3497: Additional Accessories for Steel Wardrobes

Key Specifications (Clause 7)

• Mirror Frame

  • Material: Metal sheet, min 0.8 mm thick
  • Construction: Bent with a 25 mm border
  • Fixing: Screwed to the left door (outside)

• Mirror

  • Thickness: Not less than 5 mm
  • Size: 1250 mm × 300 mm (as per IS 6184:1971)

Welding Standards for Accessories (Clause 6.2)

• Gas welding: IS 1323:1982
• Arc welding: IS 816:1969
• Spot welding: IS 819:1957

Additional Notes

• Finish of components (Clause 8.2): Colour as agreed between purchaser and manufacturer.
• Purchaser must specify accessories required when ordering (Clause 9): mirror, hanging rod, tie hanger, etc.

Rounding Off (Clause 9.1)

• Follow IS 2:1960 for rounding numerical values to match the significant figures of specified values.

flowchart TD
    A[Order Placement] --> B{Accessories Required?}
    B -->|Yes| C[Specify Mirror, Frame, Shelves, etc.]
    B -->|No| D[Standard Wardrobe]
    C --> E[Manufacture with Specified Accessories]
    D --> E
    E --> F[Packing & Transit]

This ensures correct accessory integration per IS 3497 standards.

IS 3497: Surface Treatment and Finishing for Sheet Steel Components

Key Specifications (Clauses 8.1 to 8.1.2)

• Surface Preparation (8.1.1):

  • Remove all dents, burrs, and sharp edges.
  • Pickle, scrub, and rinse components to eliminate grease, rust, scale, and foreign matter.

• Phosphating Treatment (8.1.2):

  • Immediately after pickling, apply phosphating treatment conforming to Class C of IS 3618:1966.
  • Application process as per IS 6005:1970.
  • Purpose: Enhance paint adhesion and corrosion resistance.

• Filler and Primer:

  • Filler material per IS 110:1983 applied on surfaces needing filling.
  • Aluminium primer conforming to IS 5660:1970 applied after filler.

Summary Table for Surface Treatment

flowchart LR
    A[Steel Component] --> B[Remove dents, burrs, sharp edges]
    B --> C[Pickling, scrubbing, rinsing]
    C --> D[Phosphating treatment (IS 3618 Class C)]
    D --> E[Filler application (IS 110)]
    E --> F[Aluminium primer (IS 5660)]
    F --> G[Ready for painting/finishing]

Note: Follow the sequence strictly for optimal surface durability and paint performance.

IS 3497 – Information to be Supplied by the Purchaser (Clause 9)

When placing an order for steel wardrobes (adjustable type), the purchaser must provide:

• Locker requirement: Specify if a locker is needed.
• Number of adjustable shelves: Exact quantity required.
• Colour of finish: Agreed colour for all components (Clause 8.2).
• Accessories: Indicate if mirror, hanging rod, tie hanger, or others are needed.
• Alternative construction/finish methods: Clearly state if different from standard.

Additional Notes:

• Components must be packed to avoid damage during transit.
• Final test/analysis values must be rounded per IS 2:1960 rules.
• Mirrors (if required) should conform to IS 6184:1971:
  • Thickness: ≥ 5 mm
  • Size: 1250 mm × 300 mm
• Mirror frame: Metal sheet ≥ 0.8 mm thick, 25 mm border, fixed on left door.

This ensures clarity and compliance with IS 3497 specifications.

flowchart LR
    A[Purchaser Order] --> B{Information to Supply}
    B --> C[Locker Required?]
    B --> D[Number of Shelves]
    B --> E[Colour of Finish]
    B --> F[Accessories (Mirror, Rod, etc.)]
    B --> G[Alternative Construction/Finish]
    B --> H[Packaging Instructions]

IS 3497: Packaging Specifications Summary

• Clause 8.1 & 3.1:

  • Sheet steel components and aluminium tubes (per IS 1285:1975, Designations 62400, 63400, or 65032) are used.
  • Aluminium tubes must conform to specified IS standards for quality and dimensions.

• Clause 8.2:

  • All other components should have a colour finish agreed upon by purchaser and manufacturer.

• Clause 9 (Information from Purchaser):
  Purchaser must specify:

  • Locker requirement
  • Number of adjustable shelves
  • Colour of finish
  • Accessories (mirror, hanging rod, tie hanger, etc.)
  • Alternative construction/finish methods if any

• Packaging Requirement:

  • All parts must be packed to prevent damage during transit.

Key Packaging Considerations (IS 3497):

flowchart TD
    A[Order Placed] --> B[Purchaser Provides Info]
    B --> C{Components}
    C --> D[Sheet Steel Components]
    C --> E[Aluminium Tubes (IS 1285)]
    C --> F[Other Components]
    D & E & F --> G[Colour Finish as Agreed]
    G --> H[Packaging]
    H --> I[Damage-proof Transit Packing]

Summary: IS 3497 mandates component standards, purchaser specifications, and damage-proof packaging to ensure quality and safety during transit.

IS 3497 - Marking of Steel Wardrobes

Key Specifications (Clause 11.1 & 11.1.1)

• Mandatory Marking: All steel wardrobes must bear a manufacturer's identification mark.
• Standard Mark: Optionally, wardrobes may carry the BIS Standard Mark, indicating compliance with IS 3497 under BIS supervision.
• The Standard Mark assures:
  • Production under strict inspection, testing, and quality control.
  • Continuous conformity checks by BIS.
• Licence for using the Standard Mark is granted by BIS under the BIS Act, 1986.

Marking Details:

• Manufacturer's mark should be clear, durable, and legible.
• Marking may include:
  • Manufacturer's name or logo.
  • IS standard number (IS 3497).
  • Batch or production code (optional).

Reference Table:

Additional Notes:

• Marking ensures traceability and quality assurance.
• Paint and finishing standards referenced in related IS codes (e.g., IS 110, IS 151) govern marking durability.

flowchart TD
    A[Steel Wardrobe] --> B[Mark with Manufacturer ID]
    B --> C{Use BIS Standard Mark?}
    C -->|Yes| D[Apply BIS Mark]
    C -->|No| E[Only Manufacturer Mark]
    D --> F[Assures Quality & Compliance]
    E --> F

Summary: Mark all steel wardrobes with a manufacturer's mark; optionally apply BIS Standard Mark for certified quality assurance.