Damage to plumbing from paving movement, in Yeronga, a Southern suburb of Brisbane.
Damage to plumbing from paving movement. Identified by Peter Weddell, owner/operator of Qld Home Buyers Inspection Service and Queensland Building Inspection Service, QBIS.
Although movement of paving around buildings and swimming pools is quite a common problem, it must not be understated!
Some causes of movement:
- After the footings have been constructed the soil is rarely compacted before the paving is laid.
- Type of soil supporting the paving being reactive to water.
- Leaking from damaged plumbing pipes.
In most cases paving movement is acceptable but in others it can develop into a safety issue or cause damage to other items.
Unacceptable degree of paving movement:
This shows the significance of movement causing the tiles to crack and considerable differences in levels. This is a potential safety hazard and must be rectified.
This down-pipe is damaged below the surface allowing water to escape and potentially cause expensive footing movement.
When does movement of paving require rectification?
- If it has moved to a degree that it becomes a safety issue and can cause injury from tripping.
- When movement causes damage to plumbing within it.
- Where movement may place pressure upon a structure causing it also to move, such as a retaining wall.
Implications of damage to plumbing from paving movement. Related issues:
- These problems may seem to be minor and considered by inexperienced inspectors not worthy of including in a building inspection report.
- Some types of tiles laid over paving can also present a dangerous hazard, when wet.
- Uneven levels of paving can be a potential safety hazard.
- Paving causing damage and leaking plumbing pipes can also cause movement of the foundations.
Some information that may be of use
QBCC Standards and Tolerances Guide
For independent Building Inspections Brisbane in all suburbs, Qld Home Buyers Inspection Service. qbis.com.au