Flexterra

Traditionally the way the grass areas were reinstated was by using net and battens after the grass seeding to avoid any blast and erosion problems related to the thrust of the engines

Background Information / Main Objective

Traditionally the way the grass areas were reinstated was by using net and battens after the grass seeding to avoid any blast and erosion problems related to the thrust of the engines. This activity required a large amount of resources in order to be installed and the additional issue of having to come back to remove the pins and battens once the grass had grown. Flextrerra is essentially an organic material blanket with seed mix and fertilizer mixed together and sprayed onto the disturbed area. It is used as an applied erosion control system, which follows the contours of the ground, with no bridging or potential for washout below matting; as occurred with the pins/batons and matting procedure. In collaboration with the client, this solution was agreed upon as it allowed for a simple way to eradicated several issues which impacted on the safety, the environment and the schedule of the project.

Description

Airfield High Blast Control in the UK has in the past been solved by using traditional pins/ batons and Netlon. The areas next to taxiways and runways are quite sensitive to the blast from the engines and if pins/batons are not installed correctly, materials can be swallowed or thrown by the engines. This can cause major accidents and damage to the airport and staff. Similarly, water can seep under the Netlon and heavy rainfall often causes erosion and washout, which requires pins/batons to be removed in order for this to be rectified. This method allows for a simple solution to all the issues that arise from the rehabilitation of disturbed areas on site.