Structural Safety Information and Reports

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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.

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.

Masonry panels rock in wind due to missing wall ties

Wall ties designed to connect masonry partitions to adjacent steelwork framing were not installed leaving the masonry walls unrestrained. Walls were seen to be rocking in high winds.

Provision for movement in clay brickwork facades

A reporter raises concerns over the detailing and construction of horizontal movement joints in clay brickwork facades.

Excessive surcharge at the back of a retaining wall

A reporter raises concerns about excessive surcharging at the top of a small retaining wall which was supporting the garden of the property.

Collapse of external brick wall during demolition works

A section of an external brick wall of a building collapsed suddenly and unexpectedly part way through a demolition contract.

Boundary retaining wall collapse

A boundary blockwork retaining wall, with a fence on top, part collapses due to inadequate design.

Unsafe design of retrofit cantilever balconies

A structural assessment of a number of new balconies being added to an existing building revealed critical concerns in respect of fixings back into the existing brickwork.

Stone cladding panel concerns

A reporter is concerned in respect of the risk of failure of stone cladding panels.

Collapse of brick arch overbridge during demolition

A reporter describes a project where a flanking brick arch collapsed during the demolition of two multi-span bridges over rail lines.

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Failure of cantilevered stone staircase

Further example of incorrect finite element modelling

Masonry panels rock in wind due to missing wall ties

Provision for movement in clay brickwork facades

Excessive surcharge at the back of a retaining wall

Collapse of external brick wall during demolition works

Boundary retaining wall collapse

Unsafe design of retrofit cantilever balconies

Stone cladding panel concerns

Collapse of brick arch overbridge during demolition

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