Construction Guide

The Future of Soil Stabilization

Lay flat, fasten, overlap

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Geoleed is committed to providing high-performance, high-durability geogrids, ensuring exceptional structural stability and creep resistance in every reinforcement project.

We are dedicated to deeply integrating professional technical support with stringent quality assurance, providing you with comprehensive and reliable services from solution design to construction guidance.

Technical Specifications for Geogrid Overlapping

Dimension	Key Requirements	Detailed Description
Overlap Width	15cm – 50cm	15–20cm for standard roads; 30–50cm for soft soil or heavy-load areas.
Direction	Direction of Filling	The trailing sheet must overlap the leading sheet (like roof tiles) to prevent lifting during filling.
Fixing Method	Mechanical Anchoring	Use nylon zip-ties or wire every 10–15cm, or secure with U-shaped steel staples.
Flatness	Manual Tensioning	Must be pulled tight manually to eliminate wrinkles, buckles, or gaps.
Stress Points	Avoid Critical Zones	Overlaps should not be placed at the maximum stress or potential slip planes.
Filling Rules	Layered Compaction	Dumping height < 1m; machinery must never drive directly on un-covered overlaps.

Overlapping Recommendations by Project Type

Scenario	Recommended Overlap	Requirement Level	Remarks
Standard Subgrade	20cm	Medium (Zip-ties)	Most common construction standard.
High Embankments	40cm	High (U-shaped staples)	Prevents shear failure on steep slopes.
Soft Soil / Marshes	50cm	Very High (Double tied)	Prevents separation during uneven settlement.
Retaining Walls	Minimise Overlaps	Structural (Connector bars)	High safety requirement; use full-length rolls if possible.