A warehouse floor loses its flatness over the years, and the flaw comes back to whatever stands on it. A rigid four-wheeled container on an uneven floor often rests on three wheels; if the load is symmetrical, the share per wheel rises from a quarter to a third. When the same container keeps ruining the same wheel, the culprit is often the parking spot rather than the wheel.
| Symptom | Likely floor cause |
|---|---|
| Container stands tilted | Sloping parking spot, load falls to one side |
| One wheel fails early | A floor flaw keeps that wheel overloaded |
| Lid closes with difficulty | A tilted body shifts the alignment |
| Container moves on its own | Unbraked container rolls on the slope |
| Stack shifts | The lower container is tilted, the load above slides |
Movement on its own is the most dangerous: an unbraked container whose weight component along the slope exceeds its rolling resistance drifts slowly and far. Near a loading dock that is a safety problem.
Map the floor in an hour
A spirit level and a string are enough. Measure slope at several points, mark the sunken areas and record photo and location in the maintenance log. First move the container parking to the flattest zone, write brake use into the routine, keep containers off sunken spots and lower stack height on slopes. Floor repair is expensive and gets postponed; the cost is paid in early wheel failure, containers going out of square and slipping stacks.
