Categories for Geography

Close-fit lining work in the Rabat Medina: season 2

27 January 2021
Rue 38 got all dressed up to the 9’s with the setup of the first liners. In our first episode, both the preparatory work and the routing of the liners were ongoing. In-field training, still provided by Cyrille MAUFAY, continued in December with the laying of the first stretches of close-fit lining. Rue 38 (a top priority in the programme prepared by Redal) was therefore transformed for a few days into a trenchless works demonstration area. The aim of the first drive was to rehabilitate a 30m, 300-diameter stretch between too shallow manholes. Every stage of the protocol was followed:...

Three more years with RTE…

27 January 2021
…with SADERTELEC, which renewed its framework agreement with the electricity transmission company. Do we still need to introduce SADERTELEC, our subsidiary that works exclusively for RTE, and whose headquarters are based in Marseille? A little history, all the same… It was back in 2009 that the Marseille Regional Division got in touch with the electricity transmission company, realising that burying very high voltage lines (63 to 400KV) was a fast-growing business. Our initial aim was to offer specific structural services, particularly microtunneling with STS. In 2013, a new entity was created to specifically focus on this business line: SADERTELEC. This...

Managing industrial wastewater discharge…

27 January 2021
No problem, SADE has got the skills! As part of a judicial enquiry led by OFB (the French Biodiversity Office or “environmental police”), DREAL (Direction Régionale de l'Environnement, de l'Aménagement et du Logement, i.e. Regional Environment, Development & Housing Directorate) issued formal notice to Gelagri, a Loudéac-based business, regarding its wastewater discharge management. Excerpt from Ouest France newspaper “Kilometres of stream have been polluted”, says Alain Marteil, chairman of Loudéac fishery (Côtes-d’Armor). “This is organic pollution spreading down from the Calouët stormwater basin that appears to have been discharged into the Ouest River level near La Ville Léo”, explains Jean...

A first for Lyon…

15 January 2021
In Lyon, Gantelet-Galaberthier has dug a tunnel 5 metres under the water table and 8 metres under natural ground level, using a standard sheltered technique with jet grouting in the soil mass. The Lyon subsidiary set itself the impressive challenge of creating the final section of these sewer mains along 180m! This is the first time a gallery has been dug using traditional methods in the alluvium of the Saône river. To achieve this, a technique had to be devised in order to create a waterproof underground mass, from surface level, around the future location of the gallery, enabling miners...

News from our girls and boys in Bouaké!

10 November 2020
SADE Group is bolstering Bouaké’s drinking water supply for PFO Africa, head of the consortium awarded the overall contract by the Ivory Coast Hydraulics Ministry. After work began on the site at the end of March 2020, COVID-19 put a real spanner in the works: repatriation, temporary site shutdown, plus new health & safety rules. The project practically ground to a halt for several months, leading to comprehensive reorganisation last July.  Since then, 3 teams armed with an impressive selection of excavation equipment have been working 6 days a week to meet the deadline: two Ø 1,200 teams and one...

Friedland shaft in Paris (Eole project)…

9 November 2020
A flagship worksite featuring an original technique developed by the experts of SADE Special Works. Currently, SADE Special Works is handling the earthworks for this 24.25m x 7.45m, 43m-deep rectangular shaft. Context Positioned in Paris on Avenue Friedland, which stretches from Boulevard Haussmann all the way to the Arc de Triomphe, the “Friedland shaft” will provide ventilation and emergency access for the future RER E regional express train station by 2022. It is nestled in a dense urban environment, surrounded by sensitive sites: RER Line A, which runs 4.85m from its walls and the many Haussmannian buildings lining the avenue....

SADE sees double

6 November 2020
Down near Dax, the small town of Castets plans to position itself as the new surfing El Dorado by playing host to a tourist complex, complete with a giant wave pool. This project and the population growth it will entail mean the town’s WWTP’s capacity needs to be doubled in advance. The Les Landes SYDEC (Departmental Municipal Equipment Authority) has selected SADE (head of consortium) and its partner Gallego for this mission. The challenge The goal, is to design and build the new infrastructure and partially modify the existing systems to boost treatment capacity from 2,750 PE to 5,500 PE,...

SADE group is back in the Paris region’s drinking water plants

2 November 2020
With the award of the contract to renovate the Méry-sur-Oise drinking water production plant decanting unit for SEDIF as part of a consortium alongside SETHA. Since the changes made to the terms of SEDIF’s service delegation contracts, drinking water plant contracts had become few and far between for the Greater Paris Regional Division. But that doesn’t mean it’s lost its touch, and it’s now back with a bang with this valuable contract won by the Argenteuil Agency. The contract in brief As head of the consortium, SADE won Package 2, along with its partners SETHA and INEO (ENGIE’s electrical engineering...

Down at the Blainville-sur-Orne port complex…

27 October 2020
Down at the Blainville-sur-Orne port complex… SADE is building 2 twin XXL lifting stations for the rainwater collection, treatment and discharge project launched by Caen Normandie CCI. Identical and 50/50 These 2 underground concrete structures, located at either end of the platform, are absolutely identical. They are 7.50m high, 6m long and 3.60m wide, and house four 1,600m3/h pumps operated on a 3+1 basis. Each station is sized to lift half the volumes collected on the site up to a nearby retention and containment basin, meaning the 2 stations treat 100% of the rainwater. A tried and tested methodology The...

A new contract for two top projects in Costa Rica

13 October 2020
A new contract for two top projects in Costa Rica Signed on October 6, 2020: a fine victory for SADE Costa Rica, assisted by the Group’s Head Office IT Department Support Division. Aya, which is SADE Costa Rica’s main client, is the state-owned company that manages drinking water and wastewater treatment service for 80% of the country’s population. It recently selected SADE for the biggest network extension project is has ever launched: a gigantic wastewater collection and treatment project for more than a million users in the country’s capital, San José, protecting rivers from WW discharged into the natural environment...