Specification for Aluminium Windows for Industrial Buildings

IS 1949: Scope & Key Specifications

• Scope: Covers dimensions, finishes, and glass pane sizes for steel windows.
• Finish (Clause 11.1):
  • Sashes and coupling members: matt, scratch-brush, or polished finish.
  • Optional anodizing with approved light-fast color shades.

Key Table: Glass Pane Sizes (Table I)

• Sizes include clearance as per Clause 10.1.
• Number and arrangement of panes per window type are detailed in Fig. 5 (not provided here).

Summary:

• Use Table I for selecting glass pane sizes.
• Follow finish options per Clause 11.1.
• Refer to Clause 2.0 for definitions related to the standard.

flowchart LR
    A[Window Frame] --> B[Sash]
    B --> C[Glass Pane]
    C --> D[Pane Size as per Table I]
    B --> E[Finish: Matt / Polished / Anodized]

This ensures compliance with IS 1949 for steel window fabrication.

IS 1949: Definitions & Key Specifications for Aluminium Windows

• Clause 2.0: Defines terms used in the standard for aluminium industrial windows.
• Glass Sizes (Clause 10.1 & Table I): Standard glass pane sizes with clearance included:

• Finish (Clause 11.1): Sashes and coupling members can have matt, scratch-brush, or polished finishes. Anodizing is optional; if color anodizing is applied, only approved light-fast shades are allowed.

• General Notes:

  • Aluminium window sizes and details align with IS 1361-1959 for steel windows unless specified otherwise.
  • Metric units are used throughout.
  • Rounding off follows IS 2-1960 rules.

This standard complements IS 1948 (Aluminium Doors, Windows, and Ventilators) and IS 1081 (Fixing & Glazing Code).

flowchart TD
    A[IS 1949 Definitions] --> B[Glass Sizes (Table I)]
    A --> C[Finishes (Matt, Polished, Anodized)]
    B --> D[Standard Pane Sizes]
    C --> E[Approved Light-Fast Anodizing Colors]

IS 1949: Window Designation and Notation

1. Window Notation (Clause 3.1)

• Format:
  IN x Width (modules) x Type x Height (modules)
• IN = Industrial Window
• Width & Height: Number of modules (1 module = 10 cm)
• Type Symbols:
  • F = Fixed sash
  • C = Centre-hung sash
  • B = Bottom-hung sash
  • T = Top-hung sash

Examples:

• IN 10 C 15 = Industrial window, 100 cm wide, 150 cm high, centre-hung
• IN 16 F 10 = Industrial window, 160 cm wide, 100 cm high, fixed sash

2. Composite Windows (Clause 3.2)

• Multiple windows coupled horizontally and/or vertically:
  • IN 10 C 10/IN 10 C 10/IN 10 C 10 = 3 windows side-by-side
  • IN 10 C 10/IN 10 C 10 (stacked) = 4 windows, 2 on top, 2 below

3. Glass Pane Sizes (Clause 10.1)

• Refer to Table I for glass pane sizes including clearance.
• Number & sizes depend on window type (see Fig. 5 in IS 1949).

Summary Table (Window Type Codes):

flowchart LR
    A[Window Designation] --> B[IN]
    B --> C[Width (modules)]
    C --> D[Type (F, C, B, T)]
    D --> E[Height (modules)]
    E --> F[Example: IN 10 C 15]

This notation standardizes industrial window specification for design and ordering.

IS 1949: Sizes and Tolerances for Industrial Windows

Key Specifications (Clause 10.1 & Table I)

• Glass Pane Sizes (including clearance):

• Radii for corners: All radii = 1.6 mm (Clause 1.6 Note 1)

• Weights: Nominal weights per meter length for extruded aluminum sections (Clause 1.6 Note 2)

Additional Notes

• Sizes include clearance for fitting.
• Number and arrangement of panes per window type as per Fig. 5 (not included here).
• Coupling and fixing holes are standardized (Clause 7).
• Finishes for sashes: matt, scratch-brush, polished, and optional anodizing with approved lightfast shades (Clause 11.1).

Summary Diagram: Glass Pane Size Reference

graph TD
  A[Glass Pane] --> B[Width: 265-300 mm]
  A --> C[Height: 420-490 mm]
  A --> D[Corner Radius: 1.6 mm]
  A --> E[Clearance Included]

For detailed sectional weights and hole locations, refer to Clause 7 and Fig. 2 of IS 1949.

IS 1949: Key Specifications for Materials (Aluminium Windows for Industrial Buildings)

1. Aluminium Sections:

• Must conform to:
  • IS : 733-1956 (Wrought Aluminium & Alloys Bars, Rods, Sections) — IS Designation HE9-WP
  • IS : 1285-1958 (Extruded Round Tube & Hollow Sections) — IS Designation HV9-WP
• Sections' form, dimensions, and weights as per Fig. 2 of IS 1949.

2. Finishes (Clause 11.1):

• Sashes and coupling members can be:
  • Matt
  • Scratch-brush
  • Polished
• Optional anodizing (colour anodizing only with approved light-fast shades).

3. Glass Sizes (Table I):

Summary Diagram of Material Specifications:

graph TD
  A[Materials for Aluminium Windows] --> B[Aluminium Sections]
  B --> B1[IS 733-1956 HE9-WP]
  B --> B2[IS 1285-1958 HV9-WP]
  A --> C[Finishes]
  C --> C1[Matt / Scratch-brush / Polished]
  C --> C2[Optional Anodizing]
  A --> D[Glass Sizes]
  D --> D1[Various Widths & Heights as per Table I]

Note: Use the latest versions of referenced IS codes for compliance.

IS 1949: Key Construction Specifications for Aluminium Industrial Windows

1. Glass Sizes (Clause 10.1, Table I)

• Sizes include clearance.
• Number and sizes per window type as per Fig. 5 (not provided here).

2. Finish (Clause 11.1)

• Sashes and coupling members: matt, scratch-brush, or polished.
• Optional anodizing; if color anodizing, use only approved light-fast shades.

3. General Construction Notes

• Aluminium windows follow steel window sizes and details per IS 1361-1959 unless specified.
• Metric units used throughout.
• Final test values rounded per IS 2-1960.

Additional Notes:

• Refer IS 1081-1960 for fixing and glazing practices.
• Aluminium window construction aligns with industrial standards for durability and interchangeability with steel windows.

flowchart LR
    A[Window Frame] --> B[Sash]
    B --> C[Glass Pane (Sizes per Table I)]
    B --> D[Coupling Members]
    A --> E[Finish: Matt/Scratch/Polished/Anodized]

For detailed structural design, consider load factors, wind pressure, and thermal expansion as per relevant IS codes.

IS 1949: Holes for Fixing, Coupling, and Glazing – Key Points

1. Holes for Fixing and Coupling (Clause 7.1)

• Diameter: 8 mm
• Type: Countersunk holes
• Location: In the web of outside frame sections and outer ventilator frame sections at sash perimeter
• Distance from outside face: 14 mm (1.4 cm)
• Reference: Fig. 5 (P8) shows exact positions

2. Holes for Glazing Clips (Clause 7.2)

• One hole in the web or tee on each side of each pane
• Used to fix glazing clips securely

3. Coupling Members (Clause 9.1)

• Composite windows dispatched unassembled with coupling components
• Each coupling member adds 25 mm to overall height or width

4. Radii & Dimensions (Clause 1.6)

• All radii = 1.6 mm
• Weights per meter are nominal
• Dimensions in millimeters

Summary Table

flowchart LR
    A[Frame Section Web] --> B[Fixing Holes (8mm, countersunk, 14mm from face)]
    A --> C[Glazing Clip Holes (one each side of pane)]
    D[Composite Window] --> E[Coupling Member (+25mm size)]

This ensures proper fixing, coupling, and glazing per IS 1949 standards.

IS 1949: Key Points on Fittings and Fixing Materials

1. Fittings & Fixing Materials (Clause 8)

• Use cadmium-plated or galvanized steel bolts and cone-nuts for corrosion resistance.
• Coupling screws for composite windows are countersunk, except for ventilators where round head screws may be used.
• All bolts, nuts, screws, washers, and mild steel fittings must be corrosion treated (Clause 5.5).
• Wood screws must conform to IS 451:1961.

2. Holes for Fixing & Glazing (Clause 7.2 & 7)

• Provide holes for glazing clips in the web of sections or tees, one hole on each side of each pane.
• Holes for fixing and coupling must be accurately placed for proper assembly.

3. Typical Dimensions & Radii

• All radii = 1.6 mm (Clause 1.6).
• Weights and dimensions are nominal, in millimeters.

Summary Table: Fixing Material Specifications

flowchart LR
    A[Fittings & Fixing Materials] --> B[Bolts, Nuts, Screws]
    B --> C{Corrosion Treatment?}
    C -->|Yes| D[Cadmium-plated / Galvanized]
    C -->|No| E[Not Allowed]
    A --> F[Wood Screws]
    F --> G[IS 451:1961]
    A --> H[Holes for Glazing Clips]
    H --> I[One hole in web on each side]

Use corrosion-resistant fittings and provide proper holes for glazing clips as per IS 1949 for durable, safe window assemblies.

IS 1949 – Composite Windows: Key Points

1. Notation for Composite Windows (Clause 3.2)

• Format:
  IN 10 C 10/IN 10 C 10/IN 10 C 10
  Means 3 industrial windows of type IN 10 C 10 coupled side-by-side.
• Vertical & Horizontal Coupling:
  Example:
  IN 10 C 10/IN 10 C 10 (top) over IN 10 C 15/IN 10 C 15 (bottom) indicates 4 windows coupled both ways.

2. Coupling Dimensions (Clause 9.1)

• Composite windows are shipped unassembled with coupling parts.
• Each coupling member adds 25 mm to overall height or width.

3. Glazing Clips (Clause 8.9)

• Two spring glazing clips per pane made of spring steel.
• Design as per Fig. 12 (spring clips secure glass panes firmly).

Summary Table: Coupling Dimension Increase

Diagram: Composite Window Coupling Concept

graph TB
    A[Window IN 10 C 10] --- B[Coupling Member (+25mm)]
    B --- C[Window IN 10 C 10]
    C --- D[Coupling Member (+25mm)]
    D --- E[Window IN 10 C 10]

Note: Refer to IS 1949 Fig. 10, 11, and 12 for fixing lug, fixing clip, and glazing clip designs respectively.

IS 1949: Key Specifications for Glass Panes

1. Glass Pane Sizes (Clause 10.1 & Table I)

• Sizes include clearance.
• Number and arrangement per window type as per Fig. 5 (not shown here).

2. Quality & Weight (Clause 5.4)

• Glass must be free from flaws, specks, bubbles.
• Corners squared; edges straight.
• Density: 7.5 kg/m³ (likely a typo; glass density is around 2500 kg/m³, confirm from code).

3. Glazing Clips (Clause 8.9)

• Two spring steel glazing clips per pane.
• Design per Fig. 12 (spring clips ensure secure fixing).

4. Finish of Sashes (Clause 11.1)

• Matt, scratch-brush, or polished.
• Optional anodizing with approved light-fast colors.

Additional Notes:

• Weight of glass pane (approximate):

[ \text{Weight} = \text{Area (m}^2) \times \text{Thickness (m)} \times \rho ]

where (\rho \approx 2500 , \text{kg/m}^3) (glass density).

flowchart LR
    A[Window Frame] --> B[Glass Pane (Table I Sizes)]
    B --> C[Spring Glazing Clips (2 per pane)]
    A --> D[Sash Finish Options]
    D --> E[Matt / Scratch-brush / Polished]
    D --> F[Optional Anodizing]

This summarizes key glass pane specs per IS 1949. For detailed figures (e.g., Fig. 5, Fig. 12), refer to the full code.

IS 1949: Finishes for Aluminium Windows

Key Specifications (Clause 11):

• Finishes Allowed (11.1):

  • Matt
  • Scratch-brush
  • Polished
  • Optional anodizing (only approved light-fast shades for color anodizing)

• Protective Coating (11.2):

  • A thick clear transparent lacquer (methacrylates or cellulose butyrate based) shall be applied on sashes and coupling members.
  • Purpose: Protect surface from wet cement during installation.
  • Lacquer must be removed after installation.

Additional Notes:

• Radii on sections = 1.6 mm (Clause 1.6)
• Section weights given are nominal (per meter length).
• Dimensions are in millimeters.

Summary Table for Finishes:

Protection Process Flow:

flowchart LR
    A[Aluminium Sash/Coupling Member] --> B[Apply Clear Transparent Lacquer]
    B --> C[Installation Process]
    C --> D[Remove Lacquer After Installation]

This ensures durability and surface protection during construction.

IS 1949: Dispatch and Packaging - Key Points

• Clause 12.1: Industrial windows must be dispatched with opening parts secured to maintain alignment during fixing and glazing.
• Clause 12.2: Fixing lugs, coupling fittings, and all hardware are to be dispatched separately to avoid damage.
• Clause 12.3: Composite windows should be dispatched uncoupled for ease of handling and installation.

Important Weights of Aluminum Sections (Clause 197.5 - Fig. 1)

Summary Diagram of Dispatch Packaging Flow

flowchart TD
    A[Window Fabrication] --> B[Secure opening parts]
    B --> C{Composite Window?}
    C -- Yes --> D[Dispatch uncoupled]
    C -- No --> E[Dispatch assembled]
    E --> F[Hardware & fittings dispatched separately]
    D --> F

Ensure packaging protects alignment and prevents damage during transport.

IS 1949 - Marking Specifications Summary

Clause 13.1 & 13.1.1: Marking Requirements

• Industrial window frames must be marked with:
  • Manufacturer's identification
  • Window type designation
• Windows may also bear the ISI Certification Mark, indicating compliance with Indian Standards under ISI's inspection and quality control system.

Key Points on ISI Marking:

• Governed by the Indian Standards Institution (Certification Marks) Act.
• ISI Mark assures:
  • Product conformity to IS 1949.
  • Continuous quality checks by ISI.
• Licensing for ISI Mark use is regulated by BIS.

Additional Notes:

• For finish and appearance, refer Clause 11.1 (Matt, scratch-brush, polished, anodized finishes).
• Glass sizes per Table I (Clause 10.1) define standard pane dimensions.

Marking Summary Table

flowchart LR
    A[Window Frame] --> B{Marking}
    B --> C[Manufacturer ID]
    B --> D[Window Type]
    B --> E[ISI Certification Mark (Optional)]

For detailed licensing and ISI mark use, contact BIS regional offices listed in the standard.