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- CROSS-AUS Newsletter 8 (1)
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CROSS regions
Condition assessments of exposed lightweight canopy roofs
Defects in lightweight canopy roofs, using underslung roofing sheets in many cases.
14 October 2022
CROSS Safety Report
Report ID: 1084
Region: CROSS-AUS
Reinforced aerated autoclaved concrete planks found on pitched roof of 1990s hospital building
A building constructed in the early 1990s has been found to contain reinforced aerated autoclaved concrete (RAAC) planks. This date is important since it is much later than the previously thought last significant use of RAAC in buildings in the UK and potentially affects the scope of buildings that could require screening for RAAC problems.
26 August 2022
CROSS Safety Report
Report ID: 1125
Region: CROSS-UK
IStructE publishes investigation and assessment of RAAC panels
The IStructE has published guidance that provides identification and remediation solutions for Reinforced Autoclaved Aerated Concrete (RAAC) planks.
15 March 2022
Third party content
Publisher: The Institution of Structural Engineers
Collapse of folded plate timber roof at a school
This report is about a critical safety issue concerning folded timber roofs, in various settings, including over school halls.
18 October 2023
CROSS Safety Report
Report ID: 1160
Region: CROSS-UK
Apparently simple home improvement work leads to dangerous situation
Apparently simple home improvement work, consisting of reroofing and a loft conversion, resulted in a 'near miss' with potentially dangerous conditions for neighbours.
21 August 2023
CROSS Safety Report
Report ID: 1173
Region: CROSS-UK
RAAC planks in a 1970s shopping centre
An existing large shopping centre built circa 1975 had a number of external storerooms and loading bays with roofs constructed using reinforced autoclaved aerated concrete (RAAC) planks. The planks had deflected to the extent that they needed replacing.
20 February 2023
CROSS Safety Report
Report ID: 1155
Region: CROSS-UK
Temporary movement joint in slabs not installed correctly
Dowels in temporary movement joints for a slab were not installed correctly, impacting the structural behaviour.
29 March 2021
CROSS Safety Report
Report ID: 998
Region: CROSS-UK
Structural misunderstanding leads to historic church tower nearly being demolished
A historic church stands at the center of a charming town. Highlighted among many striking features is the iconic 170-foot (52m) bell tower, which looms over the town. For decades, the tower has become the centerpiece for cultural events in addition to being the original community center of worship.
2 May 2023
CROSS Safety Report
Report ID: 1013
Region: CROSS-US
Safety issues when adding PV panels to existing roofs
A reporter raises concerns over the lack of structural engineering knowledge and dangerous assumptions, that they have seen, in assessments for the installation of photovoltaic (PV) panels for a number of buildings.
13 December 2021
CROSS Safety Report
Report ID: 1015
Region: CROSS-UK
Roof collapse of warehouse structure under rainwater ponding
This report highlights the structural risk caused by rainwater ponding on relatively flat roofs.
10 May 2021
CROSS Safety Report
Report ID: 969
Region: CROSS-US
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