How to Install Geocell: Step-by-Step Guide for Slopes and Roads

Installing geocell needs no special machinery; done in the right order, a small crew can cover a large area quickly. The steps below are a general guide for slope and road applications. Stake spacing, panel height and slope stability must always be set by the project engineer for each job.

What you need

• Geocell panels (in a cell height suited to the application)
• Anchor stakes (J-type steel pins or bent rebar)
• Geotextile where required (as a separator and filter on fine-grained or wet ground)
• Staples, clips or cable ties to join adjacent panels
• Infill: topsoil, gravel, crushed stone or concrete

1. Prepare the subgrade

Clear vegetation, roots and large stones, and level the surface. The panel must sit fully on the ground, because voids lead to settlement under the infill. If the soil is fine-grained or wet, lay geotextile first. On slopes it is common practice to dig a shallow anchor trench at the crest to secure the panel.

2. Expand the panels

Unfold the collapsed panel from the crest downwards on slopes, and along the long side on roads. It is important to stretch the panel to its full dimensions: the cells should form an even honeycomb, neither flattened nor over-stretched. Temporary stakes along the edges or a stretcher frame will hold the panel open until infilling is complete.

3. Anchor and connect

Secure the panel with stakes at the crest and across the face of the slope. Stake density depends on slope angle, slope length and infill; it increases on steep, long slopes, and on very steep slopes it is supplemented with ropes or tendons threaded through the cell walls. Butt adjacent panels edge to edge and join them with staples or ties, keeping the cell walls aligned.

4. Fill the cells

On slopes, work the infill from the crest downwards. Place the material from a low drop height so it does not crush or collapse the cell walls. Overfill the cells by a few centimetres; after compaction the surface settles to the top of the cells. On roads, plant must never drive over empty cells: the machine works from the already filled section and pushes the infill forward.

5. Compact and finish the surface

Compact granular infill with a roller. On slopes to be vegetated, lightly compact the soil and then seed or hydroseed. In concrete-filled applications the cells are filled with concrete and screeded level; perforated walls help the concrete key together between cells.

Common mistakes

• Not expanding the panel fully: cells shrink, coverage is lost and confinement is weaker.
• Insufficient anchoring at the crest: the weight of the infill drags the panel downslope.
• Driving plant over empty cells: the cell walls tear.
• Dropping infill from height: panels are crushed and displaced.
• Skipping geotextile on fine-grained or wet ground: the infill mixes into the subgrade.
• Choosing too low a cell height for the application.
• Ignoring surface water and drainage on the slope.

Site checklist

• Is the subgrade clean and level, with geotextile laid where required?
• Are the panels fully expanded with cells in an even honeycomb?
• Are crest and face stakes at the spacing shown in the design?
• Have adjacent panels been connected?
• Was the infill placed from a low height, slightly overfilling the cells?
• Are compaction and vegetation complete?

To choose the right panel height for your application, check the technical specifications or send us your project through the quote form and we will select the right panel together.