SPR Technology is used for rehabilitation of large manhole-sized headers and tunnels. A plastic band is wound around the base frame which follows the original shape of the rehabilitated piping. This band is then fitted into a firm lock. This gradually creates an annulus which is then filled with a mixture stabilizing the structure. Using this technique, it is not necessary to pump the flow agent away from the rehabilitated piping. SPR Technology can even be used in headers and tunnels of profiles larger than.

For the rehabilitation of sewer manholes, we prefer the use of fibreglass pots, which are fitted into the unsuitable or leaking shafts. The lower part of the manhole, i.e. berms and channels, is newly made of plastic concrete. The rehabilitated manhole is then fitted with non-corrosive step irons. The rehabilitation of manholes using fibreglass pots is used primarily in case of high ground water level or whenever a perfectly watertight sewer system is required..

OMEGA LINER is a technology for trenchless rehabilitation of sewer pipes via a so called “dry process”. The pulled pipe is made of special PVC copolymer enriched with a number of admixtures giving it unique properties in comparison to conventional plastic. This technology is one of the so called CLOSE-FIT Relining technologies, where the fitted pipe closely fits to the existing damaged pipeline. The piping is pre-deformed during production and folded into a coil, which decreases its surface diameter by ca 40%. The resulting shape.

Inspection of the condition of underground pipelines is performed using monitoring equipment manufactured by RAUSCH. We use an automotive camera extendable up to 180 meters. This system can be used for sewer mains of DN 150 to 1,800. Inspection of connections of DN 100 to 300 into the main header can be performed during the inspection of the header itself by extending the satellite camera into the connection on a telescopic rod. For examination of sewer service pipes and vertical drainpipes of DN 35 to 150,.

Semi-structural spraying technology is the first spraying technology which takes care of not only protection of the internal surfaces of the pipe, but also increases its structural integrity. The rehabilitation process is similar to that of other spraying techniques. After complete cleaning and camera inspection, the residual water is purged from the pipe using foam cylinders. The spray is applied by a special head with 25,000 RPM, ideally creating a layer 3 millimetres thick. The spray is usually applied in profiles of DN 100 to.