The bridge construction for the Holledau viaduct (A9) is in a location which is difficult to access, approx. 26 m above ground level. The flexible Calenberg Cisilent® elements and noise protection sheets can be mounted at the manufacturer's onto the viaduct structure, and they can be fitted in a single step to the joints.
In this case the Cisilent® elements are installed in movable sheet metal casings which can accommodate the seasonal movements of the bridge girder. The water-tight Cisilent® sheets transport any water drops or condensation to the drainage points at the lowest points. Measurements taken on the project before and after enclosing the viaduct construction showed that the noise level beneath the structure has been improved by approx. 17 dB.
Calenberg Ingenieure GmbHAm Knübel 2-4
+49 5153 9400-0
+49 5153 9400-49