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- CROSS-UK Newsletter 1 (1)
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CROSS regions
Safety issues when adding PV panels to existing roofs
A reporter raises concerns over the lack of structural engineering knowledge and dangerous assumptions, that they have seen, in assessments for the installation of photovoltaic (PV) panels for a number of buildings.
13 December 2021
CROSS Safety Report
Report ID: 1015
Region: CROSS-UK
Timber design concerns
A reporter says what he has seen of the quality of the structural engineering design of roofs in many hundreds of projects is lamentably low.
1 March 2006
CROSS Safety Report
Report ID: 21
Region: CROSS-UK
Design of timber structures
An approximate design led to a timber roof deflecting considerably.
1 November 2005
CROSS Safety Report
Report ID: 17
Region: CROSS-UK
Structural failure of older timber connections
A reporter shares three examples of the structural failure or inadequacies of connections in existing timber structures that they have encountered.
13 December 2021
CROSS Safety Report
Report ID: 1040
Region: CROSS-UK
Temporary movement joint in slabs not installed correctly
Dowels in temporary movement joints for a slab were not installed correctly, impacting the structural behaviour.
29 March 2021
CROSS Safety Report
Report ID: 998
Region: CROSS-UK
Construction period of RAAC planks
A reporter says that there are structural issues with reinforced autoclaved aerated concrete (RAAC) panels installed in a building as late as 1998. This date is significantly later than previous reports suggest as the last significant use of RAAC elements in the UK.
20 February 2023
CROSS Safety Report
Report ID: 954
Region: CROSS-UK
Timber truss
The reporter has been dealing with an application where the engineer involved discovered proprietary timber girder trusses with some glued joints that have come loose.
1 February 2007
CROSS Safety Report
Report ID: 62
Region: CROSS-UK
Low pitched metal sheet roofs
A reporter is concerned about low pitch metal sheet roofing attached to trussed rafters.
1 April 2007
CROSS Safety Report
Report ID: 66
Region: CROSS-UK
Snow loading in Scotland - summary of reports
There were heavy snowfalls over the entire United Kingdom in the winters of 2009/2010 and 2010/2011 and CROSS received a number of reports, mostly from Scotland where a significant number of buildings suffered roof collapses.
1 July 2011
CROSS Safety Report
Report ID: 264
Region: CROSS-UK
PV solar panels
This reporter queries whether enough attention is being paid to the loads applied by PV (Photo Voltaic) solar panels added to roofs.
1 January 2012
CROSS Safety Report
Report ID: 266
Region: CROSS-UK
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