The GreenBlue Urban RootSpace AirForm Pavement Support System is an engineered load-bearing soil cell with optimal soil volume for maximum rooting volume as well as the ability to accommodate services. RootSpace AirForm is manufactured from 100% recycled material, designed for economic freight and is the culmination of more than 27 years experience in helping establish trees in complex urban environments.
Material | 100% recycled polypropylene |
Code | Description | Height | Width | Breadth |
GBURAC600A | RootSpace 600 Upright | 24″ (600mm) | 20″ (500mm) | 4″ (90mm) |
GBURAC500A | RootSpace Airflow Lid | 3″ (75mm) | 20″ (500mm) | 20″ (500mm) |
GBURSAF6A | RootSpace AirForm – Mandatory component with GBURAC5600A | |||
GBURSP65A | RootSpace 600 Infill | 21″ (527mm) | 13″ (334mm) | 2″ (40mm) |
Code | Description | Height | Width | Breadth |
GBURAC400B | RootSpace 400 Upright | 16″ (400mm) | 20″ (500mm) | 3″ (75mm) |
GBURAC500B | RootSpace Airflow Lid | 3″ (75mm) | 20″ (500mm) | 20″ (500mm) |
GBURSAF4B | RootSpace AirForm – Mandatory component with GBURAC5600A | |||
GBURSP45PB | RootSpace 400 Infill | 13″ (327mm) | 13″ (334mm) | 2″ (40mm) |
Configuration | Configuration height | Crushing load capacity |
400mm Upright | 475mm | 434.0 kN/sqm |
600mm Upright | 675mm | 308.0 kN/sqm |
2 x 400mm Uprights | 875mm | 297.7 kN/sqm |
1 x 400mm + 1 x 600mm Upright | 1075mm | 285.7 kN/sqm |
2 x 600mm Uprights | 1275mm | 285.7 kN/sqm |
The following table gives the minimum allowable paving construction depths required to disperse a 4.5 tonne wheel load (as an example) on different RootSpace AirForm configurations (this is based on a typical macadam type road construction and the standard tree pit detail of GBU specification):
RootSpace AirForm configuration | Height | Subbase DTp Type 1 depth | Macadam depth * | Total depth |
400 single | 19″ (475mm) | 6″ (150mm) | 6″ (150mm) | 12″ (300mm) |
600 single | 27″ (675mm) | 12″ (300mm) | 6″ (150mm) | 18″ (450mm) |
400 + 400 | 35″ (875mm) | 12″ (300mm) | 6″ (150mm) | 18″ (450mm) |
400 + 600 | 43″ (1075mm) | 13″ (325mm) | 6″ (150mm) | 19″ (475mm) |
600 + 600 | 51″ (1275mm) | 13″ (325mm) | 150mm6″ (150mm) | 19″ (475mm) |
* Total depth of bound bituminous layers (Minimum construction depths for a full range of wheel loads are available separately)
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