Steel Structure Aluminum Canopy: 16.8 m Span, Curved Roof, 3.0 mm Al-Mg-Mn

Steel-framed aluminum canopies combine lightweight steel structure with durable aluminum roofing. Below is data from an actual curved-roof canopy project.

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Project Specs

表格

Item	Value
Span	16,810 mm
Eave height	8,829 mm
Bay spacing	5,000 mm
Number of bays	4 bays (Axis 58–62)
Total length	20,000 mm
Roof type	Curved arch roof
Roof material	3.0 mm aluminum-magnesium-manganese alloy
Wall material	Aluminum panel
Column section	SHS 200×200×8 square tube

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Roof System

The curved roof uses standing-seam aluminum-magnesium-manganese panels:

· Thickness: 3.0 mm

· Material: Al-Mg-Mn alloy (3004/3005)

· Profile: Standing seam vertical lock

· Roof radius: custom curved profile

· Total roof area: ~220 m² (estimated)

Curved aluminum panels follow the arch geometry, creating a seamless, watertight roof surface.

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Structure System

· Columns: SHS 200×200×8, Q355B, 5 pcs per gable

· Beams: curved steel rafters matching roof profile

· Bracing: horizontal and vertical bracing for lateral stability

· Base: bolted base plate to concrete foundation

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Why Aluminum Canopy

1. Lightweight — aluminum roof weighs ~3 kg/m², reducing steel frame load

2. Corrosion resistant — Al-Mg-Mn alloy lasts 30+ years without painting

3. Curved design — panels can be roll-formed to any radius, smooth arch appearance

4. Weather tight — standing seam system eliminates through-fasteners, no leakage

5. Low maintenance — no repainting, self-cleaning rain runoff

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Typical Applications

1. Entrance canopies — hotel, office building, hospital main entrance cover

2. Walkway canopies — covered walkway between buildings, parking walkway

3. Vehicle canopies — carport, EV charging canopy, bus stop shelter

4. Outdoor seating canopies — restaurant patio, café terrace, school playground shade

5. Public space canopies — plaza pavilion, station entrance, transit shelter

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Fabrication & Installation

· Steel columns and beams: shop-fabricated, hot-dip galvanized or painted

· Aluminum roof panels: roll-formed on site or pre-curved in factory

· Erection: bolted connections, no site welding on aluminum panels

· Delivery: prefabricated components shipped in knocked-down form

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**Email**: eddie@zdsteels.com, wells@zdsteels.com