TB drainage hatches – gasket system
TB trenches made of self-compacting concrete (SCC)
They are designed for use in sanitary and rain sewer networks.
They are made as wells of prefabricated manholes;
Concrete DN1000, DN1200, DN1500 or reinforced concrete DN2000 and
The elements that make up wells are:
• Bottom element optionally equipped with leak-proof and kinetics
• topping element: reinforced concrete slab or venturi
• Spacing rings to adjust the height of the well to ground level.
The well is equipped with screws. Components are connected to
Each with the use of rubber gaskets. Production and reception takes place
Comply with the requirements of European standard PN-EN1917 or according to the Approvals
Technical Report issued by the Research Institute of Roads and Bridges in Warsaw.