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Structural stability/integrity of steel frame buildings
There are occasional collapses of steel frame structures during construction and this Alert is to draw attention to matters which need to be borne in mind by designers, fabricators, and contractors.
1 February 2017
CROSS Safety Alert
Region: CROSS-UK, CROSS-AUS, CROSS-US
Lessons learned from the 2018 Florida bridge collapse during construction
This was a bridge of an unusual design and was being constructed in an unusual manner. The main 53m pre-stressed pre-cast concrete span truss was in position when cracks appeared at a node and over a period of almost three weeks they visibly worsened until collapse occurred.
1 December 2020
CROSS Safety Alert
Region: CROSS-UK, CROSS-AUS, CROSS-US
Dismantling of tower cranes
The falling of two cranes during dismantling in 2019, one in the US and one in the UK, prompts reflections on crane safety on construction sites.
1 March 2020
CROSS Safety Report
Report ID: 868
Region: CROSS-US
Coliseum failure
This is a legacy case study of the 1978 collapse of the roof of the Hartford Coliseum in Hartford, Connecticut.
1 March 2020
CROSS Safety Report
Report ID: 892
Region: CROSS-US
Mandatory seismic retrofit construction with quality control problems
Standard seismic retrofit details were used for a building with a non-standard foundation, resulting in inadequate connection of structural shear walls to foundations.
1 September 2020
CROSS Safety Report
Report ID: 888
Region: CROSS-US
The use of stand-off brackets for C-shaped cornice hooks for scaffolding support
A correspondent reports that using stand-off brackets with C-shaped cornice hooks for supporting suspended scaffolding have been contributing factors in safety incidents in certain circumstances.
1 March 2020
CROSS Safety Report
Report ID: 909
Region: CROSS-US
Failure to maintain roof drainage during re-roof leads to ponding stability collapse
A roof collapsed while the building’s roofing membrane was being replaced.
1 March 2020
CROSS Safety Report
Report ID: 864
Region: CROSS-US
Rigid wall flexible diaphragm roof collapse in earthquake
Part of the roof of a one-story building in California collapsed during a 2019 earthquake.
1 March 2020
CROSS Safety Report
Report ID: 877
Region: CROSS-US
Failure of existing long-span wood roof truss following installation of new roof-top HVAC units
Failure of an existing long-span wood roof truss following installation of new roof-top Heating, Ventilating, and Air Conditioning (HVAC) units offers lessons in the special challenges of renovations to existing buildings.
1 September 2020
CROSS Safety Report
Report ID: 949
Region: CROSS-US
Bottom-chord bracing for metal plate-connected wood trusses used in light-commercial applications
Concerns regarding metal plate-connected wood trusses in light-commercial construction when subject to net uplift.
1 September 2020
CROSS Safety Report
Report ID: 985
Region: CROSS-US