Installation of Gravel grids

Excavation

Perform the necessary excavation works. Always remove the topsoil.

Placing the borders

Place the borders. They should be 2 cm above the level of the top of the sheet. For more information on our borders, be sure to have a look here.

Adding the foundations (only for vehicular applications)

Place the foundations/sub-foundation at a depth of at least 25 cm. Work in layers of 20 cm at the most, and compact with a vibrating plate.

The foundations may consist of: limestone rubble, porphyry rubble, or crushed concrete rubble (grain size: 0-32 mm or 0-40 mm). We advise against brick rubble, as it pulverises over time.

Applying the levelling layer

The depth of the levelling layer for vehicular applications is 5 cm, for non-vehicular applications this depth is 15 cm.

The levelling layer may consist of limestone or porphyry (grain size: 2-4 mm, 1-3 mm, or 0-4 mm) or sieved sand.

Installing the ECCOgravel® sheets

Install the ECCOgravel® with overlapping geotextile. Cut with a cutting disc. Then lay the sheets in half-brick bond.

LAYING THE GRAVEL

Lay the gravel. We advise against moving loads across unfilled gravel sheets. Level with a shovel, brush, rake, and tamp. Do not compact the decorative gravel. Allow the gravel to exceed the plates by 1 to 2 cm (1cm for finer and 2 cm for coarser types of gravel). The gravel will sink slightly as a result of natural compaction. Eventually, there should be just enough gravel to hide the ECCOgravel® sheet.

For vehicular applications, we recommend a grain size of 8 to 16 mm (smaller types of gravel get stuck in tire treads, while larger grain sizes are aesthetically less pleasing).

For non-vehicular applications we recommend a grain size of 4 to 8 mm (smaller types of gravel will pulverise over time).

INSPECTION AND FINAL LEVELLING

Inspect and level a few weeks after initial use. Add gravel where necessary. Sinking will no longer occur.