O2D Mineral Foundation for access road

Recommended deployment for the creation of a mineral foundation for permeable paved light vehicle access roads:

- Preparation of base structure

         o  Mechanical or manual execution of excavation and backfill operations, up to the sides of the base structure: - 23 cm in relation to level 0
         o  Surface adjustment and levelling to an altimetric accuracy of +/- 2 cm/m
         o  Confirmation of a permeability coefficient K > 10^-6 m/s
         o  Confirmation of the load-bearing capability of ground such that EV2 > 60 MPa, where EV2/EV1 < 2
         o  Clean-up of roadways employed

- Installation of edging to the concrete foundation, the shoulder of which, at its highest point, is 8 cm below the levelled surface.

- Installation of a permeable anti-contaminant geotextile membrane

- Execution of a draining foundation

         o  Adjustment, levelling and compaction of a foundation layer comprised of crushed roadbed of particle size 2/20 mm or 2/32 mm; finished thickness after rolling: 15 cm (or - 8 cm from the levelled edging surface).
         o  Levelling and compaction of a bearing course comprised of crushed roadbed of particle size 4/6 mm or 3/8 mm ; finished thickness: 3 cm (or - 5 cm from the levelled edging surface).

- Installation of O2D FYNET laying mesh

- Installation of TTE® grids, with paving infill (O2D PAVE)