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Projects 1 Berlin: A winding road doesn’t put bends in our pipes Along the river Havel, close to the Olympic stadium and to the south of the Heerstrasse, are the lakes which serve as reservoirs for the Tiefwerder waterworks in Berlin’s Spandau Stadtforst or city forest. Some 1100 metres of pipes of DN 500 and 600 nominal sizes carrying untreated water needed to be replaced along a route following a narrow, rather winding, lakeside road. In the fine, sandy soil, the trench therefore had to be lined at the advancing end. Access was restricted so the pipes could not be laid out and stored along the side of the route. As a result the pipes and accessories were delivered straight to the grounds of the waterworks and unloaded there. In view of the cost of cranage, three tractor-trailer units per delivery had to be on the spot ready to be unloaded at hourly intervals. Not an easy task, but Buderus’s in-house staff, together with their Berlin haulage and logistics partner HZ, dealt with it brilliantly. There was no downtime whatsoever and the six metre long Buderus DIN EN 545 pipes could be quickly and easily installed and securely and reliably connected. Once again, there was convincing evidence of how well even curved routes can be tackled with Buderus’s restrained joints. After connection, the joints could be deflected through an angle of °, i.e. each pipe could be laid in a position up to 0 centimeters off the axis of the previous pipe. In this way, there were no problems in getting the pipeline for untreated water to follow the slight curves in the road through the forest and it goes without saying that this reduced the number of fittings installed. Incoming connections were made via fittings at a hydraulically beneficial angle of 45°. The entire pipeline is restrained against thrust loads to the standards of the Berlin water-supply companies and is also protected against extreme loads from traffic, for example from heavy forestry vehicles which can get bogged down in the soft soil of the forest. Bundesliga Division 2 and the “two-up” cast pipe In the summer of 006, FC Augsburg and TUS Koblenz, two football teams in Germany’s Southern Regional Division, were promoted to the Bundesliga Division . What this meant, at least for Koblenz, was that they could expect increasing numbers of fans and more vehicles at their future games. The existing stadium on the piece of land known as the “Oberwerth” was only up to the technical standards of the 1950’s and suddenly, rather than taking 5,000 spectators, it was going to have to take three times that number. Thing did not look good with the infrastructure either. Access roads, car-parks, toilets and above all capacious roofed stands had to be built or, where they already existed, refurbished at short notice. Places for setting up containerised facilities would have to be made available for the German Red Cross, the police and the press and would have to be connected to the water supply and sewer systems. The city’s leaders and the building authorities proved to be very flexible when it came to planning and financing the building work needed. However, there was still one major hurdle that had to be overcome in this area. The entire stadium site is situated in water protection zone II of the city of Koblenz’s most important waterworks and borders directly on water protection zone I so the stadium meant a “maximum potential hazard to the water extraction facilities”. The supervisory authority responsible laid down very tough requirements. The very highest safety was demanded for the collection and carrying away of both surface water and sewage. The engineering company handling the planning – in consultation with the supervisory authority – was instructed to include only the best and safest equipment that the market had to offer in its plans for this application. So the die was cast for Buderus’s ductile cast iron pipes with restrained joints! In line with DWA (German Association for Water, Wastewater and Waste) specification A 14 , the sewage pipes actually carrying the sewage had to be laid in a second pipe acting as a protective outer shell so that there would be an annular space between the two pipelines as required for future leak tests. The requirements that the companies doing the installation work had to meet for the laying of the pipes were extremely demanding. Nevertheless, thanks to the easily laid Buderus cast iron pipes and the excellent way in which all parties involved worked together, the work was done and provisionally completed smoothly and quickly. Cast iron pipes were also selected for the new water supply pipelines which had to be laid. DN 150, 00, 00, 400, 500 and 600 sewage pipes were used, as well as a cluster of DN 100 socketed pressure pipes as cableprotecting pipes, because of the high traffic loads and shallow top cover during the installation work.
The Tribistovo-Posušje soft loan project In Posušje, in the canton of West-Herzegovina of the Federation of Bosnia and Herzegovina, it is not just the supply of drinking water that is in a bad way. The region also needs a suitable sewer system and a sewage-treatment plant to allow sewage to be disposed of. So far, only a small part of the municipality of Posušje (the name means “district poor in water”) has been connected to the water supply system. Domestic wells still play a large part in the supply of water. If the region were to be brought up to the state of the art and to be supplied in the future with high quality drinking water, development work needed to be done on the water supply system. At the same time work is also being pushed ahead on a conceptual scheme for the sewer system, including the sewage treatment plant, to ensure that the routeing of the two systems is optimised. To allow the project to be implemented, ÖSTAP Engineering & Consulting GmbH of Vienna worked out a refurbishment and development project for the water supply system and initiated soft loan financing. Around .5 million Euros were needed to cover all the costs for the supply of pipes, for parts of the system, for the supervision and management of the construction work and also for the vetting of the economics of the system. The order for the supply of ductile pipes and joints was placed with TRM, because the terrain in the region – 90 kilometers to the north-east of Sarajevo – is difficult and mountainous and this is where the advantages that the VRS-T ® joint has with regard to low-cost laying and thrust and tractive restraint can be made the most of. Between August and December 008, 6, 00 meters of ductile pipes – 7 lorry-loads – of 400, 00, 50, 00 and 150 nominal sizes were delivered to Posušje. TRM pipes for Himmelreich hydroelectric power station The picturesque village of Freienfeld is situated in the upper Eisack Valley in South Tyrol. To improve the energy supply to its 1100 or so households, Flans Energie GmbH has built a small hydroelectric power station with the lovely name of Himmelreich (“Kingdom of Heaven” in English) on the little river known as the Sengesbach. The construction took 1 months and it was commissioned in October 008 and will have an annual output of 4,51 MWh. Himmelreich is what is called a “run of the river” hydroelectric power station, i.e. it has no reservoir because at any given time it processes, or rather uses, only a small proportion of the water that goes to form the river. This means that there is no interference with the natural flow of the water. The water intake structure and the desanding basin are underground structures and because of the powerful self-cleaning action of this type of intake the cost of maintenance is low. The head of water which is used to generate energy is 50 metres. The water is returned directly to the Sengesbach. Ductile cast iron pipes of nominal sizes of DN 500 and DN 600 were used for the pressure pipe, which was laid underground. In the steep lower region of the penstock the pipes had to be moved to their destination, in weather which was sometimes very bad, on a goods-carrying cable car whose cable had been specially installed for the purpose. In the upper region, the route followed by the pipe ran almost entirely through rocky terrain. The pipe, whose overall length is 1,985 metres, is used not only for the power station but also for the sprinkler irrigations systems employed by the agricultural concerns in the surrounding area. Projects 1
Page 1 and 2: 3. Volume Jahrgang 5 Issue Ausgabe
Page 3 and 4: Dear readers of inFORM We can look
Page 5 and 6: Ductile cast iron turbine pipe for
Page 7 and 8: The North Industrial Park in Leipzi
Page 9 and 10: a n d f o r L a T h u i l e i n t h
Page 11: It was back in 005 that the project
Page 15 and 16: Full halls at Pollutec in Lyon The
Page 17 and 18: areas in centres of population, the
Page 19 and 20: At the celebration to mark the 60th
Page 21 and 22: A model BLS ® for the mayor of Bil
Page 23 and 24: diameter of 118 millimeters. The co
Page 25 and 26: Dirk Peter Dirk Peter, born 196 , h
Page 27 and 28: The improvements system at Tiroler

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