GEOCELL & T1000 – Tree-root protection beneath access road (Farnborough)

Redrow’s answer to root protection for their Farnborough scheme came in the form of an above ground, no-dig method of construction using a TERRAM Geocell. The use of a TERRAM Geocell enabled Redrow to carry out construction work within the specified root protection areas of the development which would not have been permitted using traditional construction techniques due to the unacceptable levels of soil disturbance and root damage caused by such methods.

Each of the areas to be protected were cleared of vegetation and the upper layer of soil was removed by hand to limit any possible soil compaction. A layer of TERRAM 1000 Standard Geotextile, a permeable geotextile, the soil. The geocell was opened out, secured in position on top of the geotextile and the cells were filled with an aggregate. A permeable wearing course was than placed on top of the geocell. A second layer of TERRAM 1000 Standard Geotextile was placed over the geocell in areas where block paving/sharp sand was installed.