Tree Root Protection / Load Platform Geocell


Terram Geocell 25/10 & 22/20

The Terram geocell is a cellular confinement system that is used to protect tree roots from damage caused by heavy vehicles; particularly where a Tree Protection Order (TPO) is in force. Conventional construction would be invasive and trees are sensitive to disturbance.

The geocell is manufactured from one of the Terram geotextiles range which means that air and water are free to move across the root area from cell to cell. The geocell supplied in the form of flat-packed panels which expanded on site to form a much larger honeycomb area of interconnected cells. The panels are secured to the ground using steel pins which are also available to purchase.

The road or parking area can be constructed once the roots have been covered by the geocell and filled with a granular material. The geocell ensures that axle loads are spread laterally rather than applied vertically. This also minimises compaction beneath the traffic line which would be harmful to the roots as they could become starved of oxygen and moisture. Without the cellular system, loads would be transferred to the roots resulting in damage and the possible loss of trees.

A Terram tree-root-protection geocell is suitable for:
• Access roads and parking areas
• Driveways & paths
• Permanent woodland trails

It system is also suitable for the construction of temporary solutions where vehicular access to a site is limited by the presence of trees. Once operations are complete, the installation can be removed with the roots undamaged.

In recognition of the fact that trees are sensitive to disturbance, the British Standards Institution has published recommendations on how to protect them during their development. BS 5837:2005 recommends that there should be a root protection area in which development should not be permitted.

In 2007 the Arboricultural Advisory and Information Service published Arboricultural Practice Note 12: Driveways Close to Trees (APN12) which suggested that driveways could be installed within the root protection area subject to roots and the soil not being damaged. APN12 advises that an above-ground, no-dig construction should be used. This advise was incorporated into the recent British Standard which recommended that the most effective means of achieving this was through the use of three-dimensional cellular confinement system, such as a Terram Geocell.


TERRAM Roads & Highways
TERRAM Railways
TERRAM Ground Reinforcement Solutions
TERRAM geocells
Geocell Tree Root Protection
GEOCELL Tree-root protection on new access road (Achnagairn House)
GEOCELL Tree-root protection beneath access road (Farnborough)
GEOCELL No-dig driveway for tree-root protection (Essex Arb)
GEOCELLTree Root Protection (Kent)
Nonwoven Polypropylene Geotextiles