Case Study

The Eiffel Tower

When Gustave Eiffel constructed his famous tower in 1889 for the International Exposition and centennial celebrations of the French Revolution, it was envisaged to be a temporary structure. Little did he know that it would still stand as the much-loved landmark of Paris over 130 years later. 

But this longevity has come at a price. The Eiffel Tower’s ironwork has been repainted 19 times and a maintenance painting cycle takes 18 months at a cost of €4 million. The repainting costs are estimated to be ~14% of the current construction cost of the tower. 

But it is the costs in resources, risks for worker safety and the structural consequences of this repeated painting that goes unseen by the millions of tourists that visit this iconic structure. With ~40 tonnes of residual paint added to the structure at every repaint, the structural consequences of this additional mass will eventually have to be solved.

In recent painting programmes, it has been necessary to start to remove all 19 previous paint layers from certain areas of the tower to maintain its structural integrity. 

A lesson for today’s structures which are far too often built without durability and avoidance of maintenance in mind.

Each repaint applies 60 tonnes of paint and 15-20 tonnes of paint are eroded between each repaint

Removal of all existing paint before repainting cannot be done without lengthy closures

Each repaint adds ~40 tonnes of paint – making it 700 tonnes heavier than its intended design

25 painters, wearing 1,500 sets of work gear and 1,000 pairs of leather gloves

Relying on 50km of safety lines and 8000m2 of safety nets, 1,500 paint brushes and 5,000 abrasive discs

€4 million for most recent repaint

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