The use of aluminium alloys in structural applications has grown considerably in the past few decades. In transportation, the low density of aluminium, resulting in a high strength-to-weight ratio, makes it a favourable material for aircraft, high speed trains and ferries. In building and civil engineering, low density is sometimes the determining factor in the choice of aluminium; e.g. movable bridges, helicopter decks on offshore platforms, etc. However, other favourable properties such as corrosion resistance, easy shaping of profiles by extrusion, and aesthetics are often more important.

Why is aluminium used in structures?

• To achieve lightweight structures
• To aim at sustainable structures requiring less maintenance
• Good recycling opportunities
• Knowledge of aluminium structural behaviour at similar level to steel
• Design rules available in Eurocode 9

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In this module, three sections have been developed in order to illustrate the design and use of aluminium alloys in structural applications:

• Application Areas
• Overview
• Use of the Eurocode 9