Forensic FAQs

Forensic Engineering, as related to structural engineering and buildings and homes, is an engineering discipline related to determining the root cause of structural failure or deterioration. When a post-construction structural issue arises, a forensic engineer will come out to your property, investigate the damage or defects in question and then prepare a report summarizing their findings. It is the forensic engineer’s job to offer their expert opinion and assign blame for the structural damage.

Anyone can patch up a crack, but it takes an expert to ensure those cracks will not return. If your house is undergoing footing movement and you are one of the unlucky ones who have tried to patch it up without working out the root cause, chances are your patch and point job has been wasted, seeing the damage return no matter how well it has been patched.

That is where Intrax can help. Using thorough investigation, Intrax will work out the cause of distress to your property and eliminate the cause effectively. Intrax will be with you every step of the way to make sure your building is stable prior to fixing the damage, to minimise the chances of the damage recurring and save you time and money in wasted repairs.

Any time there is a failure or damage to your home or building due to impact, overloading, poor design, soil settlement or washout or fire, you will want to contact a forensic engineer to begin identifying what factors led to the failure and how to remedy the issues. The forensic engineer will assess the extent of the structural damage and start developing recommendations for action. A forensic engineer’s services may also be needed if you are in a dispute with a builder over poor or unfinished work.

There are many structural irregularities that a structural forensic engineer might encounter when inspecting your home, but the most common are cracking walls and foundations. These are indications that there is some sort of ongoing settlement or movement that is causing these cracks. Cracks are not necessarily an indicator of serious structural distress, but they will only continue to propagate if you don’t nip their root cause in the bud. A structural forensic engineer will also be able to identify more serious irregularities like buckling or cracking primary structural members like columns or framing members that could indicate a problem with the structural integrity of the home.

Some signs of damage to a house are quite obvious, like a collapsed wall or sagging roof, but others are much harder to see for the untrained eye. Luckily, structural forensic engineers know exactly what to look for and how to remedy most common structural defects. The most common defects in older homes are cracks in the walls or foundation or sloping floors. These are most likely caused by changing subsurface conditions due to drainage, soil settlement or tree roots growing out of control. If modifications have been made to the home without an engineer’s approval, there may be overstressed members that could crack or split without notice.

Houses and other buildings, by nature, crack. Some cracking in a house is normal and is expected in the relevant Australian building codes. However, if your cracking looks like some of the examples below, we recommend contacting us for consultation.

There’s no hard and fast rule for how long it should take to get your structural engineer’s report back. It will depend on the size of your house, the overall condition, the scope of work and the engineer’s own capabilities. A standard inspection report for a small home with no major defects could be turned around in a week, while an in-depth report with supporting calculations and drawings for a client looking to make major modifications to their home, it may take longer than a month.

An inspection for a small home should cost less than $1,000, while inspection of a large building with more detail required should exceed $1,000. Most residential inspections include reports, which generally cost between $1,000 to $1,500. For a larger renovation, which will require calculations and detailed drawings, expect to pay over $1,500 for any required structural engineering design services. A general rule of thumb is that the structural engineer’s cost could approach 1-2% of the total cost of construction.  This inspection will often serve as an important first step towards understanding what is causing defects like cracking or settlement.