The repair workshop at Codimatra
Orly: Deconstruction and reconstruction of the runway in record time !
We continue our focus on the major projects of construction professionals, this time we are interested in a project in France that must beat a speed record to be completed: the reconstruction of one of the most profitable runways at Orly airport in Paris.
Deconstruct and rebuild the track in record time !
Although this track is in great need of a new start, blocking it to demolish and rebuild it means a loss of revenue. This is why Aéroports de Paris has set itself the objective of completing this major project in 18 weeks, between the end of July 2019 and the end of November, or even the beginning of December. To give you an idea of the challenge, runway 08-26, more commonly known as Track 3, is 3320 meters long. On the programme for the many construction machines and civil engineering operators, 185,000 m² of concrete slabs to be destroyed, 400,000 m² of earthworks and the paving of 210,000 tonnes of asphalt to be compacted. With in addition, 15000 m² of concrete, the stripping of 900000 square meters and finally 15 kilometers of trenches !
Many machines and men to carry out this record project.
To meet this challenge, the group of companies led by Colas has been able to put in the greatest resources. There will be more than 150 machines and more than 1000 people per day 7 days a week. For the demolition of slabs, we will find on tracked excavators equipped with hydraulic hammer but also Gammond sawmills. In order to reuse the rubble in the future runway, the crushing plant is installed directly on site (and thus avoids too much heavy truck traffic), which requires the use of bulldozers or loaders to move the rubble and articulated dumpers to transport it between the area to be crushed and the crushing plant and vice versa. Drivers will not lack the equipment and materials to carry out this deconstruction and construction work. Currently in the earthmoving phase, the intervention of compactors for asphalt compaction should not be long in coming.
Rehabilitation work more than necessary for the company
In reality, this "ephemeral" project is a project in preparation for two years because Orly needs it. In addition to the ten shells from the Second World War found, the presence of asbestos (in the networks) and the need to comply with new European EASA standards, air traffic has used this runway from 1947, posing a risk to adherence and therefore safety. Following the work, the track will benefit from a 1.5 metre thick track of asphalt mixes. Another advantage is that the rest of the unused rubble and materials can be used for other projects in the south of Ile-de-France.
Officially, the construction site should not take longer than December 2 to avoid further disrupting air traffic, it is already 4600 flights cancelled and 3000 scheduled. To find out the progress of the work, we invite you to visit the Parisaéroport.fr website