Bellmont Façade Engineering inspected the internal cracking occurring within a unit in Manly.
It was concluded that the internal cracking was likely caused by the weight of bricks that hold down what are called tie down supports. Such supports secure the roof and provide resistance against wind uplift.
In this unit, strong multi-directional winds caused movement of the tie down supports which ultimately caused the horizontal cracking within brickwork.
Alternatively, the cracking could’ve also been a result of the corrosion of steel elements, a.k.a. ‘rust jacking’, where the displacement of building elements occurs due to the expansion of steel.
We recommended the following:
- Inspection of the remaining upper level units of the complex to ascertain whether similar cracking is visible on the interior rendered & exterior brick walls (where access is provided).
- Creation of a series of investigation holes in the walls (from inside the occupancy) to facilitate use of a bore scope camera to view the condition of brick ties and tie down plates or straps used and assess the level of deterioration.
The scope of works includes:
A: Rooftop Repairs
B: Embedded Steel Fixing Removals
C: Steel support Beam Replacement
D: Steel Pillar Treatment
In solving these suspected issues Bellmont delivered the installation of new gutter brackets along the perimeter of the rooftop, removal of corroded pre-existing mild steel fixings, installation of new sheeting and flashings for skylight including complete weatherproofing, installed new sheeting accommodating existing vents and complete weatherproofing, as well as treatment of the steel pillars.
Enquiry after enquiry, inspection after inspection followed by spec after spec. These are the most common building defects our engineers have come across over seventeen years of business.
To learn more about these issues and how to identify them, you can head to the issues index of our site. Alternatively, if you think you’ve already identified these issues in your building and require our assistance, get in contact with us. We’d love to help get your building back in its best condition!
Buildings are amazing structures, but sometimes even they crack under pressure…literally. While not all cracks require repairs they are definitely not an issue to crack up about as they can lead to serious structural issues if left untreated. Luckily, we are here to help with everything you needed to know about cracking.
Cracks are signs of release for a structure with built up stresses that assist contractors and engineers to identify the areas of weakness for the structure, so they know where to begin their rectification work.