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Stability of tenants' mezzanine
A reporter is concerned about structures where cold-rolled sections depend upon the chipboard for their lateral torsional restraint, and to act as a horizontal diaphragm.
1 July 2013
CROSS Safety Report
Report ID: 378
Region: CROSS-UK
Freeze/thaw effects on RHSs and unexpected hydrogen generation
A reporter provides their views of the freezing effects on rectangular hollow sections (RHSs) and how this could be related to Liquid Metal Assisted Cracking.
1 October 2014
CROSS Safety Report
Report ID: 434
Region: CROSS-UK
Further report on freezing of water in hollow sections
A reporter has a further warning on the issue of freeze/thaw cracking following report 434 after their firm encountered a similar problem on a UK project and investigated the matter.
1 January 2017
CROSS Safety Report
Report ID: 579
Region: CROSS-UK
Square Hollow Section (SHS) expansion due to freezing
A reporter has come across problems in British Columbia (temp range -30 degrees to +40 degrees) of cracking to square hollow sections (SHS) due to the ingress of water and freezing.
1 April 2017
CROSS Safety Report
Report ID: 641
Region: CROSS-UK
Major UK steel manufacturer talks about steel substitution
A correspondent is concerned that cold formed S235 steel is being used in place of hot formed S355 steel, as this can have dangerous implications.
1 January 2019
CROSS Safety Report
Report ID: 761
Region: CROSS-UK
Common use of S235 cold rolled steel instead of S355 hot rolled steel
It has come to a reporter's attention that some local fabricators are purchasing S235 cold rolled hollow sections rather than the specified S355 hot rolled sections, as they are easier and cheaper to obtain.
1 April 2018
CROSS Safety Report
Report ID: 740
Region: CROSS-UK
Contractor installs incorrect steel grade
A reporter came across an issue where the fabricator had used cold formed S235 commodity steel SHS rather than the specified hot formed S275 structural steel SHS.
1 April 2018
CROSS Safety Report
Report ID: 634
Region: CROSS-UK
Fire protection of mixed hot/cold rolled steel structure
This report describes how a high-rise building had to be remediated after it was found there was insufficient fire protection encasement of structural elements.
1 July 2020
CROSS Safety Report
Report ID: 921
Region: CROSS-UK
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