When a building cracks, sticks, or shows signs of settlement, the most expensive mistake is to start repairing before you know why it is moving. Structural movement investigation is the diagnostic step that tells you whether movement is still active, what is driving it, and what — if anything — needs to be done about it.
Our investigation service establishes the cause and the status of structural movement before any remediation is specified. We combine visual assessment, crack and level monitoring, and structural engineering interpretation to separate old, dormant movement from active movement that will keep getting worse.
The outcome is evidence, not guesswork: a clear picture of what is happening, backed by monitoring data, so the owners corporation can make — and fund — the right decision rather than paying twice for a repair that fails.
How We Investigate Movement
- History and inspection. We review the building's age, construction, ground conditions and any prior reports, and inspect the crack patterns to form an initial view of the likely mechanism.
- Install monitoring. Tell-tales are fixed across representative cracks and a precise level datum is established, so any further movement is measured objectively rather than estimated.
- Monitor over time. Readings are taken across a monitoring period spanning seasonal change, because reactive-clay and moisture-driven movement often only reveals itself across wet and dry cycles.
- Interpret and report. A structural engineer interprets the data — active or dormant, cause, and risk — and sets out recommended action, from monitor-only to underpinning.
Common Causes We Identify
- Footing and foundation inadequacy — original footings under-sized for the ground.
- Reactive-clay movement — seasonal heave and shrinkage in Sydney's clay soils.
- Moisture and drainage — leaking services, poor drainage, or nearby trees.
- Thermal and material movement — often dormant and requiring no structural repair.
Frequently Asked Questions
How long does movement monitoring take?
It depends on the suspected cause, but meaningful monitoring usually runs across several months so readings capture seasonal wet and dry cycles. Movement driven by reactive clay simply cannot be characterised in a week. We advise a monitoring period matched to the likely mechanism, and interim readings flag anything urgent along the way.
Is the cracking in my building dangerous?
Most cracking is serviceability rather than safety — unsightly and a sign of movement, but not an imminent risk. Some patterns, however, do indicate structural concern. The purpose of the investigation is precisely to tell the difference on evidence rather than assumption, and to flag anything that needs immediate action.
What is the difference between active and dormant movement?
Dormant movement has already happened and stopped — the cracks are old and stable, and often only need cosmetic repair. Active movement is still progressing, and repairing over it without addressing the cause guarantees the repair will fail. Monitoring is how we prove which one you have.
Who pays for a structural investigation in a strata scheme?
Structural movement affecting common property is an owners corporation responsibility under the NSW Strata Schemes Management Act 2015, and investigation is typically funded from the capital works or administrative fund. Our documented report also gives the committee the evidence base it needs to authorise any remediation that follows.
Related Services
Structural movement investigation replaces guesswork with evidence — so you fix the right thing, once. As a Class 2 Registered Builder with over 10 years of remedial experience across Sydney, Atomic Projects delivers engineer-led investigation and monitoring that stands up to committee scrutiny and capital-works planning. Call us on 0410 515 509 or email hello@atomicprojects.com.au to arrange an assessment.
