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CROSS regions
Incorrectly fixed sheets blow off parapet
This report concerns aluminium coping sheets that blew off the parapet of a block of flats under construction. The reporter says a fierce wind blew off several sheets which fell to the ground about 9m below. A building and a car were damaged but thankfully no one was hurt, although the potential for personal injury or death was significant.
25 May 2023
CROSS Safety Report
Report ID: 1180
Region: CROSS-UK
Wrong length blind bolts lead to unsafe bridge structure
Bridge strengthening being carried out using blind bolts left a structure in an unsafe condition with traffic loading on it.
20 February 2023
CROSS Safety Report
Report ID: 1185
Region: CROSS-UK
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
Concern about rebending starter bars
This report concerns the bending and rebending of starter bars on site during the construction of a multi storey tower. The reporter considered that such a practice could compromise the structure under extreme load conditions.
24 May 2023
CROSS Safety Report
Report ID: 1164
Region: CROSS-UK
Failure to grout steel frame bases
A reporter describes a problem that arose during the construction stage of a project when a steel frame supporting pipe and cable racks was loaded before the frame baseplates were grouted.
24 May 2023
CROSS Safety Report
Report ID: 1190
Region: CROSS-UK
Overloading a portal frame with suspended services
A reporter designing a single storey portal frame used a standard roof service loading of 0.25kN/m2. After the project was completed, a tenant for the unit took over fit out and added a considerable amount of sprinkler pipework into the roof. This created local overloading.
21 August 2023
CROSS Safety Report
Report ID: 1195
Region: CROSS-UK
Painted faying surfaces leads to connections with insufficient load capacity
Painted, rather than the required unpainted connection faying surfaces, were identified by the Resident Engineer of a reporter's firm during the erection of a primary frame for a large project. The painted surfaces resulted in the connections not having sufficient load carrying capacity and necessitated remedial works.
20 November 2023
CROSS Safety Report
Report ID: 896
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
Incorrectly installed tension control bolts could have led to serious consequences
A reporter finds incorrectly installed system HRC preload bolt assemblies, better known as tension control bolts, during a site inspection of a new highway bridge over a railway. The incorrectly fitted bolts could have had major structural implications, and led to other safety risks, if the installation error had not been spotted.
24 May 2023
CROSS Safety Report
Report ID: 1196
Region: CROSS-UK