steel sliding shutters (top hung type)

IS 10451 – Scope & Key Specifications for Sliding Shutters

Scope (Clause 2.0 & 6.1)

• Defines components of sliding shutters: top-runner/track, bracket, roller, angle or T stiffener, clocking arrangements (see Fig.1).
• Purchaser must provide detailed info when ordering (Clause 6.1).
• Test results must be rounded per IS 2-1960 rules, matching significant figures of specified values.

Key Fabrication Specs (Clause 5.1)

• Frame Angles:
  • Up to 2m width & 2.5m height: 50 x 50 x 5 mm mild steel angles
  • Larger sizes: 65 x 65 x 6 mm mild steel angles
• Stiffeners required for structural rigidity.
• Shutter leaves can be single or double leaf.

Rounding Off (Clause 0.4)

• Use IS 2-1960 rounding rules for test values.
• Retain significant figures equal to those in the standard.

Summary Table: Frame Angle Sizes

flowchart LR
    A[Purchaser provides order details] --> B[Shutter fabrication]
    B --> C{Shutter Size}
    C -->|≤ 2m x 2.5m| D[Use 50x50x5 mm angles]
    C -->|> 2m or > 2.5m| E[Use 65x65x6 mm angles]
    D & E --> F[Add stiffeners]
    F --> G[Install rollers, brackets, tracks]

For detailed dimensions and component definitions, refer to Figures 1-4 in IS 10451.

IS 10451: Definitions and Components of Sliding Shutters

Key Definitions (Clause 2.0 - 2.4)

• Top-runner or Track: The horizontal guide on which the sliding shutter moves.
• Bracket: Support element fixed to the frame (see Fig. 2).
• Roller: Wheel assembly enabling smooth sliding (see Fig. 4).
• Angle or T Stiffener: Structural reinforcements within the shutter frame.
• Outline of Clear Opening: The unobstructed opening dimension for the shutter.
• Clocking Arrangements: Positioning and alignment setup for shutter operation.

Shutter Frame Specifications (Clause 5.1)

• Angle Frame Sizes:
  • Up to 2 m width & 2.5 m height: 50 x 50 x 5 mm
  • Larger sizes: 65 x 65 x 6 mm
• Material: Mild steel angle frames (ordinary quality steel as per relevant IS standards).

Rounding Off Numerical Values (Clause 6.1)

• Follow IS 2-1960 for rounding off test or calculated values.
• Retain the number of significant digits as per the specified value.

Summary Table: Angle Frame Sizes for Sliding Shutters

flowchart LR
    A[Top-runner / Track] --> B[Roller]
    B --> C[Shutter Leaf Frame]
    C --> D[Angle / T Stiffener]
    C --> E[Bracket]
    C --> F[Clear Opening]

This diagram shows the relationship of components in a sliding shutter assembly as per IS 10451.

IS 10451: Size and Dimensions for Sliding Shutters

• Shutter Size (Clause 3.1):

  • Height ≥ Opening height + 150 mm
  • Width ≥ Opening width + 300 mm
    (For adequate weather protection)

• Frame Angle Sizes (Clause 5.1):

  • For shutters ≤ 2 m width & ≤ 2.5 m height:
    • Mild steel angles 50 x 50 x 5 mm minimum
  • For larger shutters:
    • Mild steel angles 65 x 65 x 6 mm minimum

• Fabrication Notes:

  • Single or double leaf shutters allowed
  • Use stiffeners as required for rigidity

Summary Table for Angle Sizes

Note: Final dimensions must consider IS 2-1960 rounding rules for compliance.

flowchart LR
    OpeningSize -->|Add 150 mm| HeightShutter
    OpeningSize -->|Add 300 mm| WidthShutter
    HeightShutter & WidthShutter --> FrameAngleSelection
    FrameAngleSelection -->|≤ 2m & ≤ 2.5m| Angle50505
    FrameAngleSelection -->|> 2m or > 2.5m| Angle65656

This ensures shutters fit openings with weather protection and structural adequacy per IS 10451.

IS 10451: Key Materials Specifications & Tables

• Steel Sections (Clause 5.1):

  • Mild steel angle frames for sliding shutters:
    • Up to 2 m width & 2.5 m height: 50 x 50 x 5 mm
    • Larger sizes: 65 x 65 x 6 mm
  • Stiffeners: as per design requirements.

• Cover Plates (Clause 4.2):

  • Hot rolled mild steel sheets, minimum thickness 3.15 mm
  • Material grade: Fe 310-O as per IS 1977-1975

• Rolled Sections (Clause 4.1):

  • Angles, tees, flats, channels must conform to IS 1977-1975

• Rounding Off Values (Clause 0.4):

  • Follow IS 2-1960 for rounding test results.
  • Maintain the same number of significant digits as specified values.

Relevant IS Codes for Materials:

Summary Diagram: Material Selection for Sliding Shutters

graph TD
A[Sliding Shutter] --> B[Mild Steel Angle Frame]
B --> C{Size}
C -->|Up to 2m x 2.5m| D[50x50x5 mm angle]
C -->|Larger| E[65x65x6 mm angle]
A --> F[Cover Plate]
F --> G[Hot Rolled Steel Sheet]
G --> H[Min 3.15 mm thick, Fe 310-O]

Use these specifications to ensure compliance with IS 10451 for materials in rolling shutters.

IS 10451: Fabrication and Assembly Key Points

• Frame Angles for Shutters (Clause 5.1):

  • Up to 2 m width & 2.5 m height: use angles 50 x 50 x 5 mm
  • Larger sizes: use angles 65 x 65 x 6 mm

• Stiffeners Spacing (Clause 5.1.2):

  • Vertical stiffening tees/angles: equally spaced to fit sheet width
  • Horizontal stiffeners: spaced based on sheet length

• Material Specs (Clause 4.1):

  • Angles, tees, flats, channels: rolled sections per IS 1977-1975

• Sheet Welding (Clause 5.1.4):

  • Mild steel black sheet tack welded inside frame
  • Weld run: 25 mm, spaced every 200 mm
  • Follow proper welding sequence to avoid distortion

Typical Fabrication Assembly Summary

flowchart LR
    A[Steel Angles] --> B[Frame Fabrication]
    B --> C[Attach Stiffeners]
    C --> D[Weld Black Sheet]
    D --> E[Final Assembly]

This ensures structural integrity, prevents distortion, and meets IS 10451 requirements.

IS 10451 - Information to be Supplied by the Purchaser (Clause 6.1)

When placing orders for steel side sliding shutters, the purchaser must provide the following:

• Size of opening: Width and height of the shutter opening.
• Number and size of leaves: Specify if single or multiple leaves and their dimensions.
• Details of construction around the opening: Wall thickness, frame details, and mounting provisions.
• Type of roller mechanism: Specify roller type (e.g., ball bearing, nylon rollers).
• Type of covering: Material and finish (e.g., steel sheet, galvanized).
• Any other relevant information: Special requirements or accessories.

Additional Specifications from IS 10451

• Bottom rollers: Must slide against sides of the bottom channel, not roll on the bottom guide (Clause 5.5).
• Rounding off test values: Follow IS 2-1960 for rounding decimals to the same significant places as specified.

flowchart TD
    A[Purchaser Places Order] --> B{Provide Information}
    B --> C[Size of Opening]
    B --> D[Number & Size of Leaves]
    B --> E[Construction Details]
    B --> F[Roller Mechanism Type]
    B --> G[Covering Type]
    B --> H[Other Information]
    C & D & E & F & G & H --> I[Manufacturer Fabricates Shutter]

This ensures clarity and compliance with IS 10451 requirements.

IS 10451: Finish and Marking for Steel Side Sliding Shutters

Key Specifications:

• Finish (Clause 7.1):

  • Shutters must be coated with red oxide primer conforming to IS:102-1962 (Ready mixed paint, brushing, red lead, nonsetting, priming).

• Marking (Clause 7.3):

  • Use of the Standard Mark follows the Bureau of Indian Standards Act, 1986.
  • Manufacturers must obtain a license from BIS to use the Standard Mark.
  • For details, contact BIS offices (addresses and phone numbers provided in the standard).

Purchaser's Information (Clause 6.1):

• Size of opening, number and size of leaves
• Construction details around the opening
• Roller mechanism type
• Covering type
• Any additional relevant info

Summary Table for Finish:

Notes:

• Final test values should be rounded as per IS:2-1960.
• For licensing and marking, refer to BIS regional offices listed in the standard.

flowchart TD
    A[Order Placed] --> B[Purchaser Provides Details]
    B --> C[Manufacturer Applies Red Oxide Primer]
    C --> D[Manufacturer Applies Standard Mark (if licensed)]
    D --> E[Delivery of Steel Sliding Shutter]

This ensures compliance with IS 10451 for finish and marking of steel side sliding shutters.