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ArborRaft-System-150mm-Specifier.pdf
ArborRaft-Technical-Guarantee-Specifier.pdf

ArborRaft Urban Tree Planting System

Product Code: 170UR4300-pro

The ArborRaft System combines nutrient rich ArborRaft Soil with exceptionally strong geocellular units. The ArborRaft system is used widely across the country in urban tree planting projects, the ArborRaft offers a geocellular unit the is used in tree pits during urban tree planting landscaping to protect the trees roots and also the surfaces above the trees roots to prevent root damage. The ArborRaft System and ArborRaft Soil create a healthy growing space for trees in areas subject to vehicle loadings and trafficking. Individual ArborRaft units are locked together to form a raft system that sits within the tree pit, providing load bearing support and reducing soil compaction. The ArborRaft System works by spreading the load of any vehicle movements around the tree’s rooting area. This eliminates soil compaction of the growing media within the pit and maintains the ideal growing environment for the trees to establish and mature. The ArborRaft System accommodates vehicle loadings from cars through to heavy goods vehicles. The open structure of the individual units acts as an air gap diverting root growth away from the pavement towards nutrient-rich soil. It is a tried and tested system that has successfully been installed into projects across the UK and Europe.

The ArborRaft System combines nutrient rich ArborRaft Soil with exceptionally strong geocellular units. The ArborRaft system is used widely across the country in urban tree planting projects, the ArborRaft offers a geocellular unit the is used in tree pits during urban tree planting landscaping to protect the trees roots and also the surfaces above the trees roots to prevent root damage. The ArborRaft System and ArborRaft Soil create a healthy growing space for trees in areas subject to vehicle loadings and trafficking. Individual ArborRaft units are locked together to form a raft system that sits within the tree pit, providing load bearing support and reducing soil compaction. The ArborRaft System works by spreading the load of any vehicle movements around the tree’s rooting area. This eliminates soil compaction of the growing media within the pit and maintains the ideal growing environment for the trees to establish and mature. The ArborRaft System accommodates vehicle loadings from cars through to heavy goods vehicles. The open structure of the individual units acts as an air gap diverting root growth away from the pavement towards nutrient-rich soil. It is a tried and tested system that has successfully been installed into projects across the UK and Europe.

How it works:

Open structure

The open structure of the ArborRaft Soil is retained, allowing roots to grow naturally and essential oxygen, nutrients and water to flow freely through the growing media. The nature of the system assists drainage and the free-flow of water through the tree pit. The system is flexible and can be designed to fit any tree pit size encouraging larger tree pits with less plastic.

Structural strength

The structural strength of the ArborRaft System absorbs the impact of loads placed upon it to protect the growing media and tree roots below. Prevents compaction The system prevents soil compaction, damage to the root structure and does not restrict the natural growth path of tree’s roots. The assists the tree in creating its own root anchoring system that reflects the growth and spread of its canopy.

Protects the pavement

The system creates an air gap and a barrier that prevents root growth upwards and protects the hard surface from root damage. The structure of the ArborRaft system has been developed to encourage lateral root growth – the most natural root formation for urban trees. Rather than direct root growth downwards towards anaerobic soil, the ArborRaft system retains a root growth that reflects the tree’s canopy growth.

Standard installation levels:

Assuming an 80mm thick paving block is used, the complete installation height of the ArborRaft System from pavement surface level to the underside of the ArborRaft layer will be:

Paving layer 80mm

Paving bedding layer 50mm

ArborRaft layer 150mm

Sand bedding layer 25mm

Total 305mm

*Above represents a typical car park installation where the system is subject to car trafficking.