Mainmark | STRAAM | STructural Risk Assessment And Management

For more than 25 years, Mainmark has led the world in developing some of the most advanced and accurate solutions for rectifying ground engineering and asset preservation problems.

Mainmark is proud to partner with STRAAM to bring their STructural Risk Assessment And Management onto the Australasian market.

Developed largely in part by Dr Alan Jeary, internationally-renowned expert in dynamic structural monitoring and pioneer of the field of Real Time Dynamic Structural Monitoring, STRAAM is one of the world’s most advanced platforms for easily measuring and analysing the performance of structures in order to determine the cause of damage, risk of further damage, and overall structural stability.

Every structure has a heartbeat; tiny, naturally occurring vibrations that create the structure’s unique “dynamic signature”. Once a structure’s dynamic signature has been measured, an evaluation of the non-linear damping response and mode shape analysis will assist to pinpoint any anomalies indicative of structural damage or weakness. This information can be used to establish whether repairs are necessary and if so, in what order they should be made.

Until now, it has been practically impossible to effectively measure a building’s heartbeat in real time and identify areas of concern, but STRAAM makes it possible to achieve rapid, ongoing structural analysis and quickly establish a structure’s risk ratio. The experts at Mainmark use STRAAM non-destructive monitors to conduct a sort of “Structural-Cardiograph”, providing real-time reports that accurately assess the stiffness of a structure and changes in the capacity of the structure due to subsidence, ageing, earthquake damage, or other activity.

Mainmark’s first STRAAM endeavour in Australia was the Guardian Early Learning Centre project.

The Guardian Early Learning Centre wanted to utilise the roof area to add landscaping and additional play equipment for the children. The childcare facility had limited information on the roof’s design capacity and needed to understand, with certainty, how much load the roof could safely bear to help determine landscaping decisions.

Mainmark used its STRAAM technology to establish the building’s baseline dynamic signature. The building dynamic signature utilised data from sensitive accelerometers placed strategically across the building’s roof and at different floors in the stairwell.

The accelerometers output specific data for each location, which was then aggregated to represent an accurate report on the unique structural response of the roof, its performance and condition at the time of measurement.

Mainmark used one accelerometer as a reference point and placed a second accelerometer at different points around the building to measure multiple locations. This offered a thorough understanding of the structure’s movement and performance.

The dynamic signature data obtained from the accelerometers helped to evaluate the mode shape of the existing roof structure. The physical responses of the roof were compared with the anticipated movement responses and aligned with the applicable Australian Standards.

The measurement results for the Guardian Early Learning Centre showed that, according to most measurements, adding extra loads to the roof would be well within the margin of safety.

Being able to measure almost-imperceptible structural movements has far-reaching benefits that include making structures safer, understanding the risks and causes of damage, assigning liability for events, and managing assets more effectively. Mainmark has successfully utilised the STRAAM technology in a variety of situations including monitoring the ongoing structural integrity of a heritage listed hotel in Auckland during neighbouring construction, assessing newly identified damage in an historic stone arch bridge in the Sydney region, or monitoring structural change on a road bridge during remediation works in Noarlunga, South Australia. STRAAM has even proven successful in identifying hidden structural damage, as was demonstrated in Wellington when STRAAM alerted engineers to a previously unknown high-risk issue within a government building following the 2016 earthquakes. As you can see, no matter the type or location of a structure, establishing an understanding of its unique dynamic signature provides clarity and assurance to any project.

To learn more how STRAAM can help keep your people and property safe, visit our website or call 1800 623 312 in Australia or 0800 873 835 in New Zealand to speak with one of our representatives, today.
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