15 Years on the Eiffel Tower

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1 The Eiffel Tower is 120 Years Old 15 Years on the Eiffel Tower. For 15 years OSMOS has continuously monitored the main structures of the Eiffel Tower. The daily, seasonal and pluri-annual deforma- tion cycles are now perfectly known and fed into a data bank which allows detection of any modification of the structure s behavior well ahead of time. During these 15 years, OSMOS has developed unceasingly monitoring technology dedicated to absolute safety of infrastructures, and has become the uncontested leader in the field. 15 Years of OSMOS Technology In 2009, the Eiffel Tower celebrates its 120th anniversary, and remains today the most loved and the most visited historic structure in the world. Thanks to the many purposes that Gustave Eiffel conceived for it - and most especially thanks to his inspired vision of an elegant and durable structure - the 300 meter Tower is a structure, whose technical and architectural aspects remain unsurpassed. In 1993, OSMOS installed Optical Strands the main structures of the Eiffel Tower. Was it really possible to monitor both the static and dynamic behavior of a structure? To obtain a clean signal without fail and without interference, a signal bearing information on the actual state of the structure? The Société d Exploitation de la Tour Eiffel (S.E.T.E.) thought so and entrusted OSMOS. OSMOS and its partners monitor hundreds of structures throughout the world. Some are famous and others are less spectacular, but all are equally important to us to serve infrastructure owners and the collectivity. We would like to thank the S.E.T.E. for their 15 years of confidence. We share this symbolic and prestigious reference with our partners, which use the OSMOS technology day after day in the world. Finally, we are very proud to serve in the preservation of the Gustave Eiffel s work. Bernard Hodac, Chairman & CEO of the OSMOS Group

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4 May 21st, 1897 Measurements by Gustave Eiffel 15 years 2003 Heat Wave 1 month May 21st, 2001 Measurements by OSMOS 1 hour 1 minute These two measurements taken under identical climatic conditions are separated by 104 years to the very day. They are strikingly similar. On the left, deformations registered simultaneously on the Ground Floor, 1st Floor and 2nd Floor 3 seconds: The Tower's natural period

5 Detect & Invest at the Right Time What all specialists know All civil engineering infrastructures: bridges, dams, tunnels or buildings age. The structure fatigue increases without it always being visible. Whether the risk comes from a premature fatigue or from a construction defect, no bridge is 100% safe according to experts. With OSMOS, there will be no more uncertainty. No bridge, no civil engineering infrastructure will surprise you ever again. All too often, short term or purely theoretical considerations give an incomplete view and encourage the adoption of inappropriate and nonprofitable measures. When, in a large number of cases, the objectives require an observation of all the parameters over a sufficiently long period, OSMOS provides new solutions perfectly in line with these objectives. To all those who are involved in ensuring public safety, including politicians and civil engineers, OSMOS provides easy and accessible safety monitoring techniques to meet their demands for the conservation and maintenance of the pools of infrastructures they are responsible for.

6 At a time when responsible management and sustainable development are economic and political priorities, The OSMOS Group clearly positions itself as a Global Risk Manager, actively involved in preventive maintenance and durability of infrastructures, and fully dedicated to pools of infrastructures in both the public and private sector. OSMOS: Detects the smallest weakness in a structure as soon as it appears Allows corrective actions at low cost Ensures the continued use of the structure and ultimately Lengthens the life of the structure safely. As a result: Better use of resources No more constraints of emergency for operators and Reduction in risk level NUMBERS WHICH COUNT 1 accident per week in the world 3.5 billion Euros saved in 10 years thanks to OSMOS 346 million tons The huge challenge of the annual waste in the building industry 90% 100% 1 bridge saved of infrastructures can be repaired Success rate for OSMOS projects over 4 continents = its weight in CO2 saved for the environment For all those whose mission is to protect and make pools of infrastructures last longer, the solutions developed by the OSMOS Group represent a new management tool.

7 City of New York I want to thank you very much for the significant volunteer effort made by OSMOS to help the City of New York to respond to the consequences of the terrorist attack of September 11, The sensors that OSMOS installed at and around the World Trade Center site were an important tool for assessing the structures of 3 World Financial Center (AMEX) and 130 Liberty Street (Bankers Trust). Kenneth HOLDEN, New York City Commissionner Orsay Museum "The OSMOS system has allowed us to optimize our interventions without stopping the museum activity." Olivier MOREAU, Technical Controller EDF Grand Maison Power Plant The interest of the system OSMOS is the ability to continuously Eurotunnel monitor both rapid and The OSMOS system gives us slow deformations. The complete satisfaction and interpretation provides crucial information on major civil engineering structures so as to plan genuine predictive maintenance. This is clearly an advantage in terms of safety. Jean-Louis Amiard, Eiffel Tower Site Manager remains reliable over time. Its simple design and use are advantages sought after for installation in major structures. Gérard Delacre, Technical Manager Astérix Park «The OSMOS system installed on the huge «Tonnerre de Zeus» wooden rollercoaster enables us to verify the normal behavior of this complex structure and to optimize our maintenance routines.» Alain Trouvé, Technical Manager The patrimonial conservation of the EIFFEL Tower monument requires constant monitoring of its evolution. The system set up by the company OSMOS on the Tower, and well-tried for 15 years now, fully fulfills that mission. The OSMOS system is a valuable aid to decision-making, and a source of savings in both time and money! " Stéphane ROUSSIN, Head of the Structure Department of the Eiffel Tower Company of Certified Insurance Experts «The monitoring system developed by OSMOS indicates the stresses imposed on structures - whether they display damage or not - and enables timely intervention. We have had the opportunity to test the extreme efficiency of this system both in terms of risk prevention (comprehensive building site policies) and claims assessment.» Michel Dubernard, Expert in Insurance Vézelay Basilica World Heritage Site «The Basilica of Vézelay can hardly be modelled by conventional methods. The OSMOS system, installed discreetly on the whole structure, gives us exploitable information to qualify the real state of the Basilica.» Bruno DECARIS, Chief Architect of Historic Monuments

8 The City of Montreal RATP Ministry of Culture The New-York Metro The Stade de France Eurotunnel Deutsche Bahn The Port of Yokohama The Eiffel Tower Conseil Général de Haute-Savoie The Port of Hamburg EDF The Road Department of Saxe SNCF The City of Paris Swiss Railways The Ringroad of Madrid Road sector Ageing state of a group of infrastructures Traffic qualification Evolution of a group of infrastructures Priority setting Tall infrastructures (Towers, Tall infrastructures, Windmills) Climate issues Movement and/or comfort Ageing of materials Proximity risks Rail sector Stability of infrastructures and platforms Rail/Road transfer hubs Anticipation requirements Responsibility transfer Industry Record and traceability of strains Seismic response State of fatigue Action plans Heritage sites Evaluation of atypical sites Understanding of homogenous and heterogeneous material State of conservation Maintenance programmes School buildings Necessity for absolute safety Emergency response Reassurance without exceeding operating budget Nuclear Necessity for absolute safety Taking environment and seismic response into account Third party informing documentation Immediate reactivity Population Safety issues Hydraulic Geological scale taken into account Third party informing documentation Response to needs on continuous monitoring Maintenance optimisation Geotechnical Soil and procedure qualification Durability of infrastructures Widening of appreciation fields Permanent link between knowledge and decision-making