Supply and installation of ESZ rubber line sliding bearings as in-situ concrete line sliding bearings. The mathematical proof for the usability of the bearings shall be provided. The bearing must allow a horizontal displacement of ± 25 mm perpendicular to the bearing axis and a horizontal displacement of ± 15 mm parallel to the bearing axis, and have a coefficient of friction < 0.05 over the temperature range from -35°C to + 50°C. The durability of the material must be demonstrated over a total displacement of > 100 meters.