A Newsletter from CROSS-UK containing reports on structural safety issues.
Note: this Newsletter was published by CROSS (Confidential Reporting on Structural Safety). Since March 2021, Confidential Reporting on Structural Safety is renamed Collaborative Reporting for Safer Structures (CROSS).
Newsletter content
Lightweight steel roof partial collapse
A hall constructed from thin cold rolled steel sections riveted together started collapsing when tiles were loaded on one side only.
Grades of weldable quality bolts
A reporter says grade 8.8 bolts are not required to be manufactured as being weldable according to the relevant product standards e.g. ISO 898-1 and -2.
Safety concerns with twin wall system
A reporter raises safety concerns over the temporary stability of twin wall systems after they observed failures during construction.
High strength concrete incident
Confusion on sites lead to the incorrect concrete grade being used for some structural elements.
Structural bolts and CE marking - advice wanted
A reporter seeks advice in relation to the required documents for purchasing and using structural bolts.
Failure of epoxy resin bonded anchors in concrete
A reporter expresses concern about adhesive bonded anchors after anchors failed progressively on site during a lifting operation.
Balcony construction defects of residential flats
A reporter's firm have been undertaking structural assessments of cantilevered reinforced concrete walkways, which in the majority of cases have been found to be under strength.
Mobile scaffold tower falls 7 storeys
A mobile tower, which was not being used, toppled over the guardrail and fell 7 storeys (27m) to the ground.
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