Ground Levelling & Compaction

1. Settlement & Subsidence

• Soil compresses under load, causing buildings to sink unevenly
• Cracks in foundations, slabs and pavements
• Voids forming where air gaps were left in fill

2. Drainage & Erosion

• Water pooling on uneven surfaces
• Topsoil eroding when not properly compacted
• Slope failure or landslide on embankments

3. Surface Defects

• Sunken areas, depressions or tilting structures
• Cracks in walls, roads or slabs above poorly compacted fill
• Standing water and damp issues

minor Repairs

• Regrade surface to improve drainage falls
• Recompact loose surface soil
• Fill low spots with compacted material

moderate Repairs

• Soil stabilisation with lime, cement or geotextiles
• Vibro-compaction for deeper densification
• Compaction grouting to fill voids

major Repairs

• Excavate and replace poor soil with engineered fill
• Underpin foundations affected by settlement
• Install retaining walls or geogrids on failing slopes

When Replacement Is Needed

• Before any new build, slab or paving works
• On made-up or previously developed ground
• Sloping sites needing cut and fill
• Where existing levels don't suit new design

Installation Steps

1. 1

   Site Investigation & Stripping

   • Soil testing for type, moisture and strength
   • Strip vegetation and unsuitable topsoil
   • Set out finished levels and falls
2. 2

   Cut & Fill

   • Cut high areas and place soil in low areas
   • Match cut and fill quantities where possible
   • Stockpile reusable topsoil for landscaping
3. 3

   Layered Filling & Compaction

   • Place fill in 150–300mm layers
   • Compact each layer with rollers or plate compactors
   • Maintain optimum moisture content for compaction
4. 4

   Testing & Drainage

   • Field density tests (Proctor) to confirm 90–95% MDD
   • Ensure correct slope for surface drainage
   • Hand over level, certified platform for next trade