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CROSS-UK Newsletter 76

CROSS-UK Newsletter 76 includes expert comment on fire and structural safety reports made to CROSS.  The PDF version, accessed via the button below, also includes a range of building safety updates.  Read the Newsletter

Newsletter content highlights

Multiple design and construction defects in a medium rise apartment building

A medium rise residential building was constructed using a load bearing metal stud system. Multiple defects were found in both the design and the construction.
CROSS Safety Report
Report ID: 1345

Fire test limitations of light gauge steel stud walls 

Concerns that inappropriately low loads might be used in the fire testing of light gauge steel studs to obtain an increased fire resistance period.
CROSS Safety Report
Report ID: 1293

Structural designs carried out by non engineer 

A report about structural designs prepared by an inexperienced and inappropriately qualified designer.
CROSS Safety Report
Report ID: 1322

Incorrect firestopping by a third party certificated contractor

Concerns about the improper installation of passive fire protection in wall penetrations by a third party certificated installer.
CROSS Safety Report
Report ID: 1197

Defective reinforced concrete in an educational building ignored

A report from an employee of a firm of engineers who were involved in the inspection and remediation of deteriorated concrete beams in a 1950s educational building.
CROSS Safety Report
Report ID: 1316

Fire spread in a staircase trapped occupants

A report from a fire and rescue service about a concerning fire in the communal escape route of a small, single stair apartment building.
CROSS Safety Report
Report ID: 1321

Punching shear assessments of flat slabs supporting out of line columns

Concerns that the principles of uniformly loaded slabs are being erroneously used to assess punching shear for transfer slabs.
CROSS Safety Report
Report ID: 1301

Concern about the lack of legal requirement for fire fighting equipment in residential premises

A reporter asks whether portable extinguishers should be more readily available for residential occupancies in the UK following the publication of recent Fire Industry Association research and international code changes.
CROSS Safety Report
Report ID: 1339

Disagreement over interpretation of forces from Finite Element (FE) model

Reluctance to check calculations despite concerns raised by a subcontractor that a force given by a Finite Element model did not exist.
CROSS Safety Report
Report ID: 1252

Fire resistance requirements of flat roof upstands

A reporter believes Approved Document B, and Regulation 7 and Requirement B4 of The Building Regulations 2010 have fire resistance requirements that are vague and open to interpretation where flat roof upstands join and rise up a wall.
CROSS Safety Report
Report ID: 1284

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