Geogrids stabilises take-off and landing strips in Berlin

Geogrids stabilises take-off and landing strips in Berlin

Berlin-Brandenburg International Airport (BBI), Germany | NAUE GmbH & Co. KG

Secugrid® stabilises take-off and landing strips in Berlin

Runways at the Berlin-Brandenburg International Airport (under construction) cover an area of approximately 1,470 ha. The design of the runways is quite complex.

Immediately next to the runway is an asphalt strip with shoulder and fire protection zones in which, among other things, runway lighting sits. Surface water flows from the runway onto the paved shoulder, then directly into a vegetated wetland with coarse drainage sand for filtering elements such as de-icing agents, oils, fuels and more. These runoff collection zones (and the groundwater and soil beneath) are protected from seepage by geomembrane.

Also, the filter strip area must be extremely strong and stable, in case a plane veers off the runway. Preventing a more serious accident includes making sure the wheels do not sink too deeply into the vegetated strip. Also, these strips must support and allow quick, safe access for emergency personnel.

Berlin-Brandenburg International Airport (BBI), Germany | NAUE GmbH & Co. KG

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To stabilise the runway edges, Secugrid® 80/80 Q1 reinforcement geogrids were installed above the soil filter layer. Secugrid® distribute stress quickly, effectively and safely to maintain runway integrity.

Approximately 280,000 m² of Secugrid® 80/80 Q1 were installed above the filter surface. Above the geogrid, a 30 cm thick gravel layer was placed.

Along with the runoff control, runway shoulder stabilisation was installed. The nearly 500,000 m² of installed Secugrid® 30/30 Q1 made up the bulk of the geosynthetics supplied to the project by NAUE. This geogrid was laid on the prepared subgrade. Next came a 30 cm thick gravel layer, 15 cm of top soil and then vegetation.

The opening of this new, modern airport is planned in June 2012, and the metropol of Berlin will have a junction point of airplanes, trains, metros and busses under one roof.