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Collapse of unusual hybrid concrete and steel strand truss on school roof
This report concerns the collapse of a school hall roof which resulted from the failure of one of a number of unusual hybrid concrete and steel strand trusses. The trusses consist of a precast reinforced concrete top chord and verticals with a bottom chord of tensioned steel strands. The failure of the truss resulted in the collapse of the supported flat roof local to the failed truss, and da...
25 May 2023
CROSS Safety Report
Report ID: 1227
Region: CROSS-UK
Floor vibration in a gym
Vibration within the floor structure of a second floor gym gives rise to concern of structural resonance and possible fatigue of structural members.
26 August 2022
CROSS Safety Report
Report ID: 1106
Region: CROSS-UK
Defects found in previously repaired bridge
While carrying out strengthening work on a bridge, there was concern that by removing the non-structural encasement, alternative load paths had been removed.
1 April 2016
CROSS Safety Report
Report ID: 564
Region: CROSS-UK
Lack of lateral stability in steel frame
Concerns were raised after the steel frame of a building was found to have a lack of horizontal and vertical bracing.
1 July 2016
CROSS Safety Report
Report ID: 540
Region: CROSS-UK
Flaws with partial encasements around steel columns
A structural assessment found that steel columns encased in concrete to mid-storey height were heavily corroded directly above the top of the encasements.
1 January 2016
CROSS Safety Report
Report ID: 517
Region: CROSS-UK
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