ALUMINIUM STRUCTURE – P2 SPECIFICATION

1. Material

• Aluminium Alloy: 6063-T6

• Standard: ASTM B221 / EN 573 / EN 755

• Minimum Yield Strength: ≥ 215 MPa

2. Member Description

P2 – Secondary Aluminium Post / Column

• Section: Square / Rectangular Hollow Section (as per approved drawings)

• Typical Size: 75 × 75 × 3 mm (unless noted otherwise)

• Function: Secondary vertical support member

• Height & Spacing: As per structural and shop drawings

• Maximum Allowable Slenderness Ratio: As per Eurocode 9

3. Base Connection

• Base Plate:

  • Material: Aluminium or Hot-Dip Galvanized Steel

  • Thickness: 6–8 mm

• Anchors:

  • Type: Stainless Steel SS304 / SS316 anchor bolts

  • Fixing: Mechanical or chemical anchors into concrete

• Isolation pad to be provided to prevent galvanic corrosion

4. Fabrication

• Shop-fabricated, accurately cut and drilled

• All edges smooth and free of burrs

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

• Free from cracks, dents, twists, or surface defects

5. Connections

• Connection to beams (L1 / L2) via bolted and/or welded joints as shown in drawings

• Fasteners: Stainless Steel SS304 / SS316

• All fixings corrosion-resistant

6. Surface Finish

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

• Anodizing: Minimum 20–25 microns

• Color and texture as approved by Architect

• UV and corrosion resistant

7. Installation

• Installed plumb, level, and aligned

• Verticality tolerance: ±3 mm over full height

• Protective film removed after completion

8. Codes & Standards

• Aluminium Structural Design: Eurocode 9 / AADM

• Quality & Workmanship: ISO 9001

If you want, I can:

• Combine P1 & P2 into one specification

• Shorten this for drawing notes

• Adjust sizes for actual project loads

Just tell me how you’ll use it.

Below is a clear, standard technical specification for GI STRUCTURE – L1, suitable for drawings, BOQ, and tender documents.

GI STRUCTURE – L1 SPECIFICATION

1. Material

• Steel: Mild Steel

• Standard: ASTM A36 / EN 10025 (S275)

• Minimum Yield Strength: ≥ 250 MPa

• Corrosion Protection: Hot-Dip Galvanized

2. Member Description

L1 – Primary GI Beam

• Section: Rectangular Hollow Section (RHS) / Square Hollow Section (SHS) / I-Section
  (as per approved drawings)

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

• Function: Primary horizontal load-bearing structural member

• Span & Layout: As per structural and shop drawings

• Maximum Allowable Deflection: L/250

3. Galvanizing

• Method: Hot-Dip Galvanizing

• Standard: ISO 1461 / ASTM A123

• Minimum Zinc Coating Thickness: 85 microns

• Surface to be free from bare spots, runs, or excessive buildup

4. Fabrication

• Cutting, drilling, and welding to be completed before galvanizing

• All welds continuous and smooth

• No sharp edges or burrs

• Welding Standard: AWS D1.1

• Members straight and free from distortion

5. Connections

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

• Fasteners: Hot-Dip Galvanized or Stainless Steel

• Bolt Grade: 8.8 minimum

• All bolts, nuts, and washers corrosion-resistant

6. Installation

• Installed true to line, level, and alignment

• Fixing tolerance: ±2 mm

• Damaged galvanizing to be repaired with zinc-rich paint (≥90% Zn)

7. Codes & Standards

• Structural Steel Design: AISC / Eurocode 3

• Galvanizing: ISO 1461 / ASTM A123

• Quality & Workmanship: ISO 9001

If you want, I can:

• Prepare GI L1 + L2 combined spec

• Convert this into a short BOQ description

• Match it to canopy, pergola, or façade support

Just tell me what’s next.