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- CROSS-UK Newsletter 2 (1)
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CROSS regions
Failure of cantilevered stone staircase
During the renovation and change-of-use conversion of a former minor stately home built around 1830, under pedestrian loading, a ‘cantilevered’ stone staircase partially collapsed without warning.
21 February 2023
CROSS Safety Report
Report ID: 1147
Region: CROSS-UK
Further example of incorrect finite element modelling
Concerns in respect of the sufficiency of finite element modelling of masonry walls as part of a reinforced concrete framed building.
20 February 2023
CROSS Safety Report
Report ID: 1145
Region: CROSS-UK
Girder collapse
The failure was of a two-storey high trussed girder with a 36m span, designed to carry a composite steel and concrete floor at the lower level and a trussed roof at higher level.
1 March 2006
CROSS Safety Report
Report ID: 30
Region: CROSS-UK
Effect of staff change on a design
A reporter illustrates how risk can be generated from staff turnover.
1 October 2012
CROSS Safety Report
Report ID: 277
Region: CROSS-UK
Compatibility at RC column to slab joint - strong column/weak slab
A reporter who was reviewing the structural design of a commercial building raises concerns over the compatibility at column/slab joints when different grades of concrete are used.
1 April 2012
CROSS Safety Report
Report ID: 296
Region: CROSS-UK
Concrete grade confusion in software
A reporter noticed that the design calculation report generated by a proprietary software package called for ‘concrete characteristic strength = 45N/mm2’, but did not confirm whether this refers to the cylinder or cube strength.
1 April 2019
CROSS Safety Report
Report ID: 788
Region: CROSS-UK
Design responsibility for temporary stability of steel frame building
A reporter raises concerns about the division of responsibility for the temporary stability of a four-storey steel frame structure with precast concrete planks and a structural topping.
1 April 2019
CROSS Safety Report
Report ID: 789
Region: CROSS-UK
Unconservative design of flat slab due to software modelling issues
A reporter discusses how a design/modelling problem caused an under-designed reinforced concrete (RC) slab to be constructed.
1 April 2020
CROSS Safety Report
Report ID: 886
Region: CROSS-UK
Fire risks in multi-storey car parks
A reporter is concerned by the reluctance of the industry to voluntarily take on board and proactively react to the lessons learnt from the fire at the Echo Arena car park in Liverpool.
14 October 2020
CROSS Safety Report
Report ID: 940
Region: CROSS-UK
Columns missing due to 3D modelling
A new eight storey residential concrete frame building was being constructed and several columns were omitted from the ground and first floor level drawings, says a reporter.
1 January 2017
CROSS Safety Report
Report ID: 614
Region: CROSS-UK
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