metal shelving racks (adjustable type) - Specification

IS 1883 Scope Summary

• Scope: Covers design and specifications for metal shelving racks of three types:

  • Open type
  • Semi-open type
  • Closed type (Clause 3.1)

• Material Specifications: Uses various IS standards for components:

  • Structural steel (IS 2062)
  • Rolled steel sections (IS 808)
  • Bolts and nuts (IS 1363, IS 1364)
  • Coatings and surface treatments (IS 2633, IS 4736)
  • Wood-based boards (IS 1659, IS 303)

• Rounding Off: Test or calculated values must be rounded as per IS 2-1960 to the same decimal places as specified values (Clause 0.5).

• Purchaser's Role: Must provide technical info when ordering (Clause 0.4).

Key Notes:

• The standard integrates international practices and has evolved through revisions (1961, 1966, 1975).
• It ensures compatibility and quality by referencing related IS codes for materials and fasteners.

Typical Specification Table (Example):

graph TD
A[Metal Shelving Racks] --> B(Open Type)
A --> C(Semi-Open Type)
A --> D(Closed Type)
A --> E(Materials & Fasteners)
E --> F[Structural Steel (IS 2062)]
E --> G[Rolled Sections (IS 808)]
E --> H[Bolts & Nuts (IS 1363, 1364)]
E --> I[Coatings (IS 2633, 4736)]

This provides a concise overview of the scope and references in IS 1883.

IS 1883 - Materials: Key Specifications & References

• Types of Metal Shelving Racks (Clause 3.1):

  • Open type
  • Semi-open type
  • Closed type

• Material Specifications:

  • Structural steel (standard quality): IS 226 (5th revision)
  • Rolled steel beams, channels, angles: IS 808 (1st revision)
  • Cold rolled carbon steel strip: IS 513 (1st revision)
  • Black square bolts & nuts (6-39 mm): IS 1363 (1st revision)
  • Black hexagon bolts & nuts (6-39 mm): IS 1367 (1st revision)
  • Electroplated zinc coatings on iron/steel: IS 2629 (1st revision)
  • Hot-dip galvanized coatings on fasteners: IS 4759
  • Mild steel sheets: IS 1079 or IS 513 (grade 0) (Clause 2.5)

• Rounding Off Values:

  • Use IS 2-1960 for rounding test/analysis results to match significant figures (Clause 0.5)

Summary Table: Common IS Codes for Materials in IS 1883

If you need formulas for strength or design, please specify the component or loading condition.

IS 1883: Shelving Racks Key Specifications

1. Dimensions (Clause 4.1)

• Nominal overall dimensions (height/width): 975 mm to 4875 mm in 300 mm increments
• Shelf depths: 300, 400, 500, 600 mm
• Ground clearance: 45 mm

2. Minimum Clearance for Recessed Racks

3. Metal Shelves (Clause 5.3.1)

• Material: Mild steel sheets, ≥ 1.0 mm thickness
• Shelves must have lipped flanges:
  • Flange width: 30 mm
  • Lip depth: 15 mm
• Shelf size derived from rack dimensions and thickness of angles, gussets, and sheets.

Summary Table: Dimensions and Clearances

flowchart TD
    A[Shelving Rack] --> B{Dimensions}
    B -->|Height/Width| C[975 to 4875 mm]
    B -->|Depth| D[300,400,500,600 mm]
    A --> E[Ground Clearance: 45 mm]
    A --> F[Metal Shelves]
    F --> G[Mild Steel ≥1.0 mm]
    F --> H[Lipped Flanges: 30 mm width, 15 mm depth]
    A --> I[Clearances for Recess]
    I --> J[Top: 20 mm]
    I --> K[Sides: 10 mm]
    I --> L[Depth: 5 mm]

This concise summary covers the key dimensional and material specifications for shelving racks per IS 1883.

IS 1883 — Dimensions and Tolerances for Shelving Racks

1. Nominal Dimensions (Clause 4.1)

• Height: 975 mm to 4875 mm (increments of 300 mm)
• Depth: 300, 400, 500, 600 mm
• Ground clearance: 45 mm

2. Tolerances (Clause 4.2)

• All specified dimensions may vary by ±5 mm.

3. Minimum Clearances for Recessed/Openings (Clause 4.1 Note)

4. Rack Types (Clause 3.1.3)

• Closed Type: Racks fitted with side and back sheets.

Summary Table

flowchart TD
    A[Nominal Dimensions] --> B[Height: 975-4875 mm]
    A --> C[Depth: 300-600 mm]
    A --> D[Ground Clearance: 45 mm]
    E[Tolerances] --> F[±5 mm]
    G[Clearances] --> H[Top: 20 mm]
    G --> I[Side: 10 mm]
    G --> J[Depth: 5 mm]

This ensures dimensional accuracy and fitment for shelving racks per IS 1883.

IS 1883: Components and Assembly Key Points

1. Components (Clause 7.1)

• Angles and Sheet Metal Components must conform to specified material grades (revised in 1975).
• Use standard steel grades for durability and strength.

2. Assembly (Clause 6.1)

• Components are assembled exclusively by bolting.
• Bolts and nuts must meet IS standards for strength and fit.

3. Packing (Clause 12.1)

• All components (angles, shelves, gussets, sides, partitions, backs, bolts, nuts) must be packed securely to avoid damage during transit.

Typical Bolted Assembly Formula:

For bolt strength and design: [ P = A_s \times f_u ] Where:

• (P) = Load on bolt
• (A_s) = Tensile stress area of bolt (mm²)
• (f_u) = Ultimate tensile strength of bolt material (N/mm²)

Summary Table (Example)

flowchart LR
    A[Components] --> B[Angles]
    A --> C[Sheet Metal]
    B & C --> D[Assembly by Bolting]
    D --> E[Secure Packing]

For detailed bolt sizes and tensile areas, refer to IS 1363 and IS 3757.

IS 1883 - Assembly Methods: Key Points

1. Assembly Components (Clause 7.1)

• Angles and sheet metal components are assembled primarily by bolting.

2. Bolting Specifications (Clause 6.1 & 2.2)

• Minimum bolt size: M6.
• Nuts and bolts must conform to:
  • Bolts: IS 2585-1968 (Square bolts)
  • Nuts: IS 1363-1967 (Hexagonal nuts)
• Bolts, screws, and nuts should be zinc plated or galvanized as per:
  • IS 1573-1970 or IS 5358-1969.

3. Packing (Clause 12.1)

• All components (angles, shelves, gussets, bolts, nuts) must be packed securely to avoid damage during transit.

Summary Table: Bolt & Nut Standards

Assembly Flow (Simplified):

flowchart TD
    A[Components Prepared] --> B[Bolting (M6 or above)]
    B --> C[Use IS 2585 & IS 1363 compliant bolts & nuts]
    C --> D[Zinc Plating / Galvanizing]
    D --> E[Secure Packing for Transit]

Note: Ensure all fasteners meet IS standards and are protected against corrosion for durability.

IS 1883: Finishing and Surface Treatment - Key Points

Surface Preparation (Clause 7)

• Pickling: Remove dents, burrs, sharp edges; clean components by pickling, scrubbing, rinsing.
• Phosphating: After pickling, apply phosphate coating as per Class C of IS 3618-1966 and process per IS 6005-1970.
• Putty Application: Use putty conforming to IS 110-1968 for filling surfaces.
• Primer: Aluminium prime per IS 5660-1970.

Paint & Enamel Specifications (Clause 7.3)

• Finish color agreed upon by purchaser and manufacturer.
• Use ready mixed paints, enamels, primers as per relevant IS codes.

Performance Requirements (Clause 8)

• Flexibility and Adhesion Test (8.3):
  • Test sample: Mild steel plate 150 x 50 mm, thickness 0.315 mm.
  • Test per IS 101-1964T (clause 16).
  • No damage, detachment, or cracking under x10 magnification.

Summary Table for Surface Treatment

flowchart TD
    A[Start: Steel Component] --> B[Remove burrs, dents, sharp edges]
    B --> C[Pickling: Clean surface]
    C --> D[Phosphating treatment (IS 3618, IS 6005)]
    D --> E[Apply Putty (IS 110)]
    E --> F[Apply Aluminium Primer (IS

IS 1883 - Testing Requirements Summary

• Clause 8.2: Pressure Test

  • Sample: Mild steel plate, 150 x 50 mm, thickness 0.315 mm.
  • Test as per IS 101:1964, Clause 15.2.
  • Criteria: No visible metal surface after test separation.

• Clause 8.3: Flexibility and Adhesion Test

  • Same sample size and thickness as pressure test.
  • Test as per IS 101:1964, Clause 16.
  • Criteria: Paint film must show no damage, detachment, or cracking under x10 magnification.

• Rounding Off Results (Clause 0.5)

  • Follow IS 2:1960 rounding rules.
  • Retain significant figures equal to the specified value.

Key References for Tests

Note: Samples must be prepared and finished as per Clause 7 of IS 1883 before testing.

flowchart LR
    A[Sample Preparation] --> B[Pressure Test (IS 101:15.2)]
    A --> C[Flexibility & Adhesion Test (IS 101:16)]
    B --> D{No visible metal?}
    C --> E{No paint damage?}
    D -- Yes --> F[Pass]
    D -- No --> G[Fail]
    E -- Yes --> F
    E -- No --> G

This ensures compliance with IS 1883 testing requirements for paint coatings on mild steel plates.

IS 1883: Load Capacity & Related Specifications

1. Load Capacity (Clause 9.1)

• Max static uniform load per shelf: 150 kg
• This is a guideline for ordering shelves; do not exceed this load.

2. Shelf Dimensions (Clause 4.1)

3. Minimum Clearance for Installation (Clause 4.1 Note)

4. Rack Types (Clause 3.1.3)

• Closed Type: Racks with side and back sheets for enclosed storage.

5. Reinforcements (Clause 5.11)

• Use shelf reinforcements and side supports to handle varying load types safely.

Summary Formula for Load Capacity per Shelf:

[ \text{Max Load} = 150 \text{ kg (uniformly distributed)} ]

flowchart LR
    A[Order Shelf] --> B{Select Dimensions}
    B --> C[Length: 975-4875 mm]
    B --> D[Depth: 300-600 mm]
    B --> E[Ground clearance: 45 mm]
    A --> F[Check Load]
    F --> G{Load ≤ 150 kg?}
    G -->|Yes| H[Proceed]
    G -->|No| I[Add Reinforcements]
    I --> H

Use this as a guideline for safe shelf design and ordering per IS 1883.

IS 1883 – Information to be Supplied by the Purchaser (Clause 10.1)

When placing an order for steel shelving racks, the purchaser must provide the following key details:

• Number of racks
• Type of racks: Open, semi-open, or closed
• Size of rack: Refer Clause 4.1 for dimensional specifications
• Number of shelves
• Partitions:
  • Number of compartments vertically
  • Height of each compartment (center to center of shelves)
  • Number and location of partitions within compartments
• Accessories:
  • Requirement of binstrips per compartment
  • Label holders per compartment (specify width)
• Colour specification
• For open racks: Number and location of strips

Load Specification (Clause 9.1):

• Maximum static uniformly distributed load per shelf = 150 kg

Marking (Clause 11.1):

• All racks must be marked with the manufacturer's identification.

Rounding Off Values (Clause 0.5)

• Follow IS 2-1960 for rounding test or analysis results to the same significant figures as specified values.

Summary Table for Purchaser Information

flowchart TD
    A[Purchaser Order] --> B[Provide Number of Racks]
    A --> C[Specify Rack Type]
    A --> D[Specify Rack Size & Shelves]
    A --> E[Partition Details]
    A --> F[Accessories: Binstrips, Labels]
    A --> G[Colour & Open Rack Strips]
    B & C & D & E & F & G --> H[Supplier Manufactures Racks]
    H --> I[Mark Manufacturer ID

IS 1883: Marking and Certification Key Points

• Clause 11.2 (BIS Certification Marking):

  • Products may be marked with the Standard Mark as per BIS Act, 1986.
  • Use of the Standard Mark requires a license from BIS, governed by their rules (Clause 11.2.1).

• Manufacturer Identification (Clause 11.1):

  • All metal shelving racks must carry a manufacturer’s mark for traceability.

• Rounding Off Values (Clause 0.5):

  • Test results must be rounded off according to IS 2-1960 rules, retaining the same significant figures as specified values.

• Order Specification Details (Clause 4.1):
  When placing orders, purchaser must specify:

  • Rack size
  • Number of shelves
  • Number & height of compartments (center-to-center shelf distance)
  • Partitions and their locations
  • Binstrips and label holders (with width)
  • Colour and open rack strip details

Summary Table: Key Marking Requirements

flowchart LR
    A[Order Placed] --> B[Specify Technical Details]
    B --> C{Rack Details}
    C --> |Size, Shelves| D[Manufacturing]
    C --> |Partitions, Compartments| D
    C --> |Binstrips, Label Holders| D
    D --> E[Mark Manufacturer ID]
    E --> F{BIS License?}
    F --> |Yes| G[Apply Standard Mark]
    F --> |No| H[No Standard Mark]

This ensures traceability, compliance, and clarity in product certification and marking per IS 1883.