5 years after La Riche, Rennes RD and SADE Special Works pooled their expertise once more on behalf of Tours Métropole, for vast drainage works between Tours and Saint-Cyr-sur-Loire.
Broken down into two orders attributed to the Rennes RD and SSW, this 15-month, out-size task involved the extension of the drainage network to the north of the Tours metropolis, with the building of a primary collector to transport wastewater to the main treatment plant (La Grange) in La Riche, the ultimate goal being to close down all the small treatment plants in… +
The Loire-Forez conglomeration entrusted the SADE Group with the separation of a sewer mains section in the Saint-Just-Saint-Rambert municipality. Works were co-contracted by the local SADE agency and DPSM, our Toulouse-based subsidiary and rehabilitation expert.
Double, rehabilitate and separate
Along around 450m on Avenue des Barques, the task was to:
Rehabilitate a T180 ovoid
Build a stormwater collector in parallel (800mm-diameter concrete)
Create/modify all branch connections to separate stormwater and wastewater drainage along most of this section
The DPSM teams took care of the rehabilitation, while the Poitiers-Metz RD, and more specifically the Saint-Etienne branch… +
In Beaumont, as part of a project to install junctions to the Pourliat stormwater basin drain, Clermont Auvergne Métropole (CAM) called on SADE Special Works and the Poitiers-Metz RD (Clermont-Ferrand Agency), to create a stormwater collector using microtunnelling (1,200mm-diameter) along 635m.
Works were executed:
In two thrusts: the first along a straight distance of 240m and the second along 395m with a 200m bend of 400m radius
from a single entry shaft to two exit shafts.
Using standard techniques, SADE Special Works carried out the excavation works… +
To transport wastewater to its pre-treatment and treatment facilities, the Greater Paris Sanitation Authority (SIAAP) manages a 440km network composed primarily of outfalls with manhole access. The rehabilitation of 11 manholes, along the north-east outfall, was entrusted to SADE Special Works.
A similar task across the board…
For 10 manholes of 20m to 65m in depth, all equipped with a concrete staircase, SADE Special Works’ task was to clean, purge coatings, apply a special mortar for hostile environments and, where necessary, replace or install safety features such as handrails.
SADE and SAT working well together!
The Rouen Normandie Metropolitan Authority has appointed a SADE (agent)-SOGEA consortium to rehabilitate the wastewater and stormwater networks on Esplanade Saint-Gervais in Rouen. This area on the banks of the Seine – used regularly for major events, such as trade fairs, funfairs, exhibitions, etc. – is now a huge construction site working to a tight timescale.
The main objective is to be able to collect and pre-treat – by means of temporary connection points, a new network and associated works – all… +
In Béziers, as part of the rehabilitation of a section of the town’s sanitation network.
The Béziers Méditerranée Urban Authority has accepted DPSM’s solutions for the rehabilitation of a visitable segment of its sanitation network located right next to the mainline rail station and partly beneath its tracks.
A strategic but congested main sewer
This section is part of a mains sewer that transports just over half of all the town’s wastewater. A fact that led to the installation, during the works, of a by-pass with a capacity of 600m³/h. The DPSM teams… +
…Where the Marseille RD is replacing one of the city’s major feeders.
Montpellier’s largest reservoir is located in the university district, fed by the Lez catchment spring, the region’s main resource.
In the framework of laying works for Line 5 of the Montpellier tram system, SADE, under the direction of the agent Razel Bec, is replacing one of two feeders transporting water from this reservoir to the city’s secondary reserves. In order to expand its capacity, a 100mm-diameter concrete pipe is to be replaced by a 1,300mm-diameter steel-core pipe along 1,050m and… +
Though ski resorts might not be opening back up right away, some will be ready and raring to go for the season because our Regional Divisions are hard at work!
Thanks to fast work by our Metz and Lyon Regional Divisions, two resorts’ water systems are being given a major makeover.
Water for snow-making machines: no SADE, no snowflakes!
In Haut-Rhin, SMMGM (i.e. Markstein Grand-Ballon massif joint development agency) wanted to extend the Markstein ski resort’s snow-making system. To meet this demand and supply 9 new snow-making machines, the Metz Regional Division (Alsace Agency) set up:… +
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
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… +