Typical signs
- Leaning wall, bulge, open joints, shifted base, water or soil pressure.
Where it is often found
- Sloped sites, driveways, patios, walkouts and lot lines.
What it can mean
- Missing/blocked drainage, frost, inadequate foundation, surcharge or corrosion.
What to check next
- Photograph plumb and measure progression.
- Check water, cracks and loads above the wall.
Reasonable immediate actions
- Keep people and vehicles away if movement is apparent.
When to stop and call a professional
- Tall wall, movement, traffic/structure above or collapse risk.
Prevention
- Drainage, designed foundation, geogrid/anchors and controlled loads.