ALUMINIUM STRUCTURE – L1 & P1 SPECIFICATION

1. Material

• Aluminium Alloy: 6063-T6 (minimum)

• Standard: ASTM B221 / EN 573 / EN 755

• Minimum Yield Strength: ≥ 215 MPa

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2. Structural Members

L1 – Primary Aluminium Beam

• Section: Rectangular / Box Section (as per approved drawings)

• Typical Size: 100 × 50 × 3 mm (or as specified in drawings)

• Function: Primary horizontal load-carrying member

• Installation: Fixed to P1 using stainless steel bolts or welded connection

• Deflection Limit: L/250 minimum

P1 – Primary Aluminium Post / Column

• Section: Square Hollow Section

• Typical Size: 100 × 100 × 4 mm (or as per drawings)

• Function: Vertical load-bearing support

• Base Plate:

  • Thickness: 8–10 mm aluminium / galvanized steel

  • Anchored to concrete using SS anchor bolts

• Verticality Tolerance: ±3 mm over full height

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3. Fabrication

• Shop-fabricated, accurately cut and drilled

• All edges smooth and free from burrs

• Welding (if required): TIG welding in accordance with AWS D1.2

• No visible distortion, cracks, or surface damage

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4. Connections & Fasteners

• Bolts, nuts, washers: Stainless Steel SS304 / SS316

• All connections corrosion-resistant

• Isolation pads to be used where dissimilar metals occur

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5. Surface Finish

• Powder Coating: Minimum 60–80 microns
  OR

• Anodizing: Minimum 20–25 microns

• Color: As per architect’s approval

• Finish to be UV and corrosion resistant

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6. Installation

• Structure to be installed plumb, level, and aligned

• Anchors tightened to manufacturer’s recommendations

• Protective film removed after completion

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7. Standards & Compliance

• Aluminium Design: Eurocode 9 / AADM

• Workmanship: ISO 9001

• Installation: As per approved shop drawings

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If you want, I can:

• Convert this into BOQ wording

• Adjust sizes for canopy / pergola / façade

• Prepare a one-line drawing note version

Just tell me the project type.

ALUMINIUM STRUCTURE L1 SPEC

Here is a clear, drawing-ready specification for ALUMINIUM STRUCTURE – L1 only, suitable for BOQ, tender, or shop drawings.

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ALUMINIUM STRUCTURE – L1 SPECIFICATION

1. Material

• Aluminium Alloy: 6063-T6

• Standard: ASTM B221 / EN 573 / EN 755

• Minimum Yield Strength: ≥ 215 MPa

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2. Member Description

L1 – Primary Aluminium Beam

• Section: Rectangular / Box Section (as per approved drawings)

• Typical Size: 100 × 50 × 3 mm (unless noted otherwise)

• Function: Primary horizontal load-bearing structural member

• Span & Layout: As per structural/shop drawings

• Maximum Allowable Deflection: L/250

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3. Fabrication

• Shop-fabricated from extruded aluminium sections

• Accurate cutting, drilling, and alignment

• All edges smooth, rounded, and free from burrs

• Welding (if required): TIG welding complying with AWS D1.2

• No visible cracks, dents, distortion, or surface defects

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4. Connections

• Connection Type: Bolted and/or welded as shown on drawings

• Fasteners: Stainless Steel SS304 / SS316

• All connections corrosion-resistant

• Isolation pads required for dissimilar metals

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5. Surface Finish

• Powder Coating: Minimum 60–80 microns, polyester based
  OR

• Anodizing: Minimum 20–25 microns

• Color and texture: As approved by Architect

• Finish to be UV-stable and corrosion-resistant

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6. Installation

• Installed true to line, level, and alignment

• Fixing tolerances: ±2 mm

• Protective film removed after completion