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Concerns over corrosion of dissimilar metals in fixing cavity wall tie systems
A reporter is concerned about corrosion that may occur between dissimilar metals that can be used in cavity wall tie systems. The reporter has noted that stainless steel and carbon steel may be fixed together in wall cavities, which are damp environments, and that corrosion of dissimilar metals in contact may occur.
24 May 2023
CROSS Safety Report
Report ID: 1186
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
Change in use results in masonry wall failure
A room with walls of traditional cavity and single skin masonry was lined with plywood and used for storage of wood chips. No thought was given to the lateral pressure on the walls which eventually failed.
6 April 2023
CROSS Safety Report
Report ID: 884
Region: CROSS-UK
Failure of cantilevered stone staircase
During the renovation and change-of-use conversion of a former minor stately home built around 1830, under pedestrian loading, a ‘cantilevered’ stone staircase partially collapsed without warning.
21 February 2023
CROSS Safety Report
Report ID: 1147
Region: CROSS-UK
Further example of incorrect finite element modelling
Concerns in respect of the sufficiency of finite element modelling of masonry walls as part of a reinforced concrete framed building.
20 February 2023
CROSS Safety Report
Report ID: 1145
Region: CROSS-UK
Masonry panels rock in wind due to missing wall ties
Wall ties designed to connect masonry partitions to adjacent steelwork framing were not installed leaving the masonry walls unrestrained. Walls were seen to be rocking in high winds.
17 February 2023
CROSS Safety Report
Report ID: 931
Region: CROSS-UK
Provision for movement in clay brickwork facades
A reporter raises concerns over the detailing and construction of horizontal movement joints in clay brickwork facades.
2 February 2023
CROSS Safety Report
Report ID: 860
Region: CROSS-UK
Excessive surcharge at the back of a retaining wall
A reporter raises concerns about excessive surcharging at the top of a small retaining wall which was supporting the garden of the property.
2 February 2023
CROSS Safety Report
Report ID: 834
Region: CROSS-UK
Collapse of external brick wall during demolition works
A section of an external brick wall of a building collapsed suddenly and unexpectedly part way through a demolition contract.
13 December 2022
CROSS Safety Report
Report ID: 875
Region: CROSS-UK
Boundary retaining wall collapse
A boundary blockwork retaining wall, with a fence on top, part collapses due to inadequate design.
30 August 2022
CROSS Safety Report
Report ID: 1119
Region: CROSS-UK
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