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Technical renovation – sewer replacement in concrete construction

In this project, we completely replaced the existing sewer pipes in an underground parking garage. The old pipes were made of outdated cast iron in a vulnerable state, with an increased risk of leaks, deflections, and blockages. Due to age and stress, several connections had already deteriorated. After a technical inspection, it was decided to preventively replace the entire system with a modern, low-maintenance solution with an improved connection to the existing network.

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The old pipes were carefully disconnected and removed without damaging the concrete ceiling structure. A new system was then installed using plastic pressure pipes (black pipes), with corrosion-resistant brackets and an improved slope. The new pipes are attached to the ceiling structure via a tightly mounted suspension system, ensuring proper flow and accessibility for future maintenance. The system’s shape and route were optimized to prevent clogging and reduce noise pollution in the upper floors. Thanks to close coordination with residents, the homeowners’ association (VvE), and suppliers, the work was completed within a tight schedule and with minimal disruption to the surrounding area.