{"id":66726,"date":"2024-10-01T07:31:51","date_gmt":"2024-10-01T07:31:51","guid":{"rendered":"https:\/\/bkp-berolina.de\/stehmeyer-bischoff-saniert-grosses-maulprofil-in-berlin-mit-berolina-hf-linern\/"},"modified":"2024-10-01T10:04:55","modified_gmt":"2024-10-01T10:04:55","slug":"stehmeyer-bischoff-rehabilitates-large-mouth-profile-with-berolina-hf-liners","status":"publish","type":"post","link":"https:\/\/bkp-berolina.de\/en\/stehmeyer-bischoff-rehabilitates-large-mouth-profile-with-berolina-hf-liners\/","title":{"rendered":"Stehmeyer + Bischoff rehabilitates large mouth profile pipe in Berlin with Berolina-HF-Liners"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text css=””]\u201cThe Spree still flows through Berlin,\u201d is the translation of a verse of a well-known song about the city. And a lot of rainwater still flows through the Spree, which is discharged through sewers. Stehmeyer + Bischoff Berlin<\/a> GmbH renovated one of these sewers with a mouth profile and direct outlet into the capital’s water vein over a length of around 280 meters on behalf of Berliner Wasserbetriebe<\/a>. The team at BKP Berolina Polyester GmbH & Co. KG supported its long-standing customers with the production of four 17 millimeter thick Berolina-HF-Liners<\/a>, know-how in planning and the workforce of its application technicians.<\/strong><\/p>\n

The network of stormwater sewers in Berlin measures 3,324 kilometers. In Baumschulenstra\u00dfe in the Treptow-K\u00f6penick district, some of these kilometers from all directions come together in the form of smaller sewers and flow into a final section before the Spree \u2013 with a mouth profile and a diameter of 1,546 by 900 millimeters. Even before the BKP hose liners were installed, Stehmeyer + Bischoff built new manholes and manhole connections and carried out bed profiling of the pipe. The liners were intended to ensure improved statics and hydraulics of the sewer.[\/vc_column_text][vc_empty_space][vc_video link=”https:\/\/youtu.be\/Xe4olvI_vdc” el_width=”60″ align=”center” css=””][vc_empty_space][vc_column_text css=””]Bigger, thicker, heavier \u2013 liner records for Stehmeyer + Bischoff<\/strong><\/p>\n

Stehmeyer + Bischoff has been working in sewer rehabilitation for over twenty years and has the wealth of experience and technology for large projects. Around 280 meters of mouth profile renovation, circle equivalent DN 1,225, wall thicknesses of 17 millimeters and a total liner weight of over 35 tons challenged everyone involved beyond the norm. In order to avoid any unwanted surprises, the Berlin company’s construction managers prepared even more intensively for the project. Several on-site appointments and construction process discussions between Berliner Wasserbetriebe, Stehmeyer + Bischoff and BKP Berolina also resulted in very detailed planning on which the later installations were based.<\/p>\n

BKP meets expectations<\/strong><\/p>\n

Berliner Wasserbetriebe was impressed by the preparations, the creation of a risk matrix and the diverse project experiences of its partners. After the extensive preparatory work by Stehmeyer + Bischoff, the heavy liners were easily pulled in using the BKP conveyor belt including a folding device. David Kijewski and Olaf Meier, BKP application engineers, helped the \u201cSteBi\u201d crew in handling such a large and heavy liner. \u201cThe team carried out the job with great routine within a very short period of time,\u201d says David Kijewski.<\/p>\n

Despite the large wall thickness of 17 millimeters, the Berolina-HF-Liners fit perfectly to the host pipe due to their excellent extension behaviour. A negative mold made specifically for the project ensured that the liners adapted to the profile before the pipe section beginnings. Overstretching was prevented. The curing of the four sections went smoothly.[\/vc_column_text][vc_empty_space]