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CROSS-AUS Newsletter 7

A Newsletter from CROSS-AUS containing reports on structural safety issues.

The reporter is concerned that some structural engineers assume without adequate verification that their computer modelling is correct and accurate; that they do not understand the limitations or basis for their modelling; or that the model chosen may not be appropriate for that structure.

Construction products- fire test certificates

A reporter has notified CROSS-AUS regarding the potentially inappropriate use of fire test methods on certain materials.

Continuously threaded reinforcing bar

Difficulties with site inspection of continuously threaded reinforcing bars

Site testing of post-installed fasteners in concrete

This report describes a situation where site testing of post-installed fasteners in concrete was undertaken by a contractor as an alternative to adopting the design data from the manufacturer in an attempt to justify an increased design capacity for the fasteners.

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Recent safety reports from CROSS-AUS

The myth of quality assurance
This report argues that, to achieve the objective of good quality construction that satisfies the design intent, there is no substitute for the practice of regular site inspections being conducted by the original design engineer.
Failure of large aluminium composite panel | Report ID 962
This report highlights the importance of correctly designed fixings and anchoring systems for cladding panels to buildings to minimize the risk of failure.
The use of cast-in ferrules as structural connections | Report ID 993
This report highlights several problems that can arise with structural connections between elements when cast-in ferrules (also known as threaded inserts) are used for the anchorage of reinforcing bars.
Design of internal partitions for horizontal loads | Report ID 1000
This report draws attention to the requirement for internal partitions to be designed for horizontal loads from wind and seismic effects in accordance with Section B of the Australian National Construction Code (NCC).