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| Formwork with adjustable radius for bio natural gas power plant  Producing electricity from biomethane is one of the most environmentally friendly methods of energy generation. The German Renewable Energy Law (EEG) offers plant operators guaranteed protection of their investments for 20 years. In Lower Saxony, a large number of agricultural companies already use this form of support since newly built Small Power Plants pay for themselves within only a few years. One of the latest and most efficient plants was commissioned at the beginning of February 2011. Contractor G. Büter Bauunternehmen GmbH & Co. KG (Ringe) was commissioned to complete the shell construction of a private biomethane plant within only a few weeks during September and October 2010. This comprised a technical building, storage tank and three circular tanks built of on-site concrete: a fermenter (diameter 21 metres), post-fermenter (24 m) and fermentation residue tank (32 m). Each of the tanks is 6.00 metres high with a consistent wall thickness of 20 cm. Gravel, sand and turf were initially excavated for the surface foundation, which required open water management because the local groundwater level is only 1 m below surface. C35/45 concrete was used for the base plate. Still in stock, pre-rounded and assembled from the last bio-gas plant contract, the PASCHAL circular formwork could be positioned immediately arriving on site. The heavy-duty crane at the centre of the construction site was used during the construction of all buildings. Each phase had an outer length of 14.40 metres and an inner length of 13.80 metres. The phases involve setting up one side of the formwork, reinforcement work, erecting the closing formwork (including installation of a 1.0-metre high PEHD support fabric in the upper area to protect the concrete from the corrosive bio-gas), concreting and finally dismantling, cleaning and repositioning the formwork. These work steps can often be a laborious process when other types of formwork are used. But TTR enabled the phase to be completed quickly and easily, especially since it eliminates readjustments or additional on-site fillers. write your comments about the article :: © 2011 Construction News :: home page |