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Connection fixity considerations for steel frame modelling
This report concerns the modelling of joints when using computer programs. In some cases, engineers are applying rotational releases to joints in models but subsequently designing the connections as rigid. This leaves a fundamental mismatch between analysis and design which may lead to unsafe structural connections argues a reporter.
17 November 2022
CROSS Safety Report
Report ID: 1139
Region: CROSS-UK
Problem when launching a prestressed beam
When lowered onto its elastomeric bearings, a 40m span post-tensioned ‘I’ beam started to move towards the outer edge of the pier cap.
30 July 2021
CROSS Safety Report
Report ID: 1027
Region: CROSS-UK
GRP panels as permanent shuttering
A reporter highlights problems that were encountered when Glassfibre Reinforced Plastic (GRP) panels were used as permanent formwork on a highway construction project.
1 October 2012
CROSS Safety Report
Report ID: 342
Region: CROSS-UK
Bridge bearing design and installation - further concerns raised
A reporter says that the issue of successful co-ordination between designers, contractors and specialist bearing suppliers is one they have experienced.
1 January 2019
CROSS Safety Report
Report ID: 796
Region: CROSS-UK
Quality of design and construction of a major bridge structure
This report concerns the design and installation of the bridge bearing zones on a new prestressed precast concrete viaduct.
1 October 2018
CROSS Safety Report
Report ID: 781
Region: CROSS-UK
Failure of pile load test arrangement
A pile was being load-tested, for confirmation of design pile loads for the foundations of a road bridge, when the web of the deep steel beam used in the testing arrangement buckled.
1 January 2015
CROSS Safety Report
Report ID: 484
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
Responsibilities for hybrid concrete construction
Concerns are raised after a substantial precast element, weighing over 10t, had been placed in position and used as part of the shuttering for an in-situ pour without it being designed to act as a shutter.
1 October 2016
CROSS Safety Report
Report ID: 574
Region: CROSS-UK
Serious safety failings of high level lattice girder walkways
A reporter discusses extremely serious safety failings with the construction of two new high level lattice girder walkways in the fly tower of a theatre.
1 January 2018
CROSS Safety Report
Report ID: 697
Region: CROSS-UK
No responsibility for damaged footbridge
A reporter describes how they tried to raise concerns over a damaged footbridge but could not determine who ownership.
1 July 2018
CROSS Safety Report
Report ID: 723
Region: CROSS-UK
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