148 Category 4: Special Projects 4 Suspended Painting Scaffold for the A330 Airbus - Blagnac, France SE Contact Rémi Martin Address Batiment A6 Europarc de Pichaury 13856 Aix les Milles, France Website www.comi-service.com Subsidiary of the Altrad group, Comi Service specialises in scaffolding. Its engineering office is able to handle the most technically challenging projects and its national network of seven agencies allows for wide geographical coverage. Comi Service in figures: • 332 full-time employees. • €40 million revenue. • A stock of 10,000 tons of multi-directional NF material of the Layher and Plettac brands. Owner Airbus Industrie Architect Comi Service General Contractor Airbus Industrie Engineering Office Comi Service Construction Period 05/2014 - 09/2014 Project definition: In order to apply paint to the A330, Airbus Industrie needed scaffolding that would allow them easy access to all parts of the aircraft. The resulting structure is suspended to the framework of the painting workshop and measures 9 m by 39 m, with a height of 12 m and weighs 39 tons. Modelling and calculation: SCIA Engineer made it possible to design the structure according to the special scaffolding codes NF12810, NF12811, EN74 as well as to the Eurocodes. We defined the non-linear hinges for the couplers precisely and ran a nonlinear analysis following the iterative Timoshenko method. The model consists of 7,876 nodes, 4,699 beams and 16 non-linear combinations. Conclusion: The challenge was to find purely geometrical solutions for the distribution of loads, as scaffolding elements are standard tubes with a defined resistance. It was also necessary to take into account relative displacements to avoid any collision risk with the aircraft. Thanks to SCIA Engineer all of this was possible and straightforward. Comi Service
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