A new driveway for two dwellings in Kidlington, Oxford was granted planing permission on the condition that the roots of a mature tree were protected. Driveways and access roads often need to pass close to mature trees to get to areas of land for new developments.
Tree root bridge RB VHD 57kN was chosen because it allows access for all vehicles whilst protecting the soil from compaction and compression forces.
The standard groundscrew base was installed first, followed by the top section, which was securely fixed to this to ensure there is no movement in the finished roadway; regardless of the forces above and potentially beneath (growing roots) the system.
Shaped angle grids were used to form a corner in the driveway.
Edging bolted to the outside flange of the t-beams provided a channel in which to cement the edging stones.
The tree root bridge was paved over to match the rest of the driveway. It provides a rigid and firm base within the RPA while not impeding the natural transfer of moisture and air with the soil below.