Structural Safety Information and Reports

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Wrong length blind bolts lead to unsafe bridge structure

Bridge strengthening being carried out using blind bolts left a structure in an unsafe condition with traffic loading on it.

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.

Critical welding of structural steelwork missed

The designer of a steelwork roof frame found a critical fabrication error when inspecting steelwork on site before it was erected.

Misleading instructions for a structural component

A reporter confirms the difficulty encountered whilst endeavouring to ensure cast-in insulated connectors supporting a parapet wall and balustrade were properly fixed.

Roof collapse at a social club

This is a report about a roof collapse that occurred, in about 1985, because only half as many parallel faced timber roof trusses were installed as there should have been.

Trench sheet naming confusion

A reporter involved with temporary works design has been made aware that there are two suppliers providing a trench sheet under the same name.

Poor quality design leads to failure for a small design and build contract

An example of a small design and build contract where poor design and management led to an inadequate structure being built.

Concerns about punching shear in a flat slab

This report concerns potential shear failures in flat slabs. This originates from inconsistent design and detailing of the shear reinforcement where a proprietary shear link system is assumed in the design but not followed in detailing.

Specification issue with steel hollow sections

A reporter raises concerns after their structural engineer had failed to specify the steel grade used in the design for hollow sections on two projects.

Grouting of joints between load-bearing prefabricated concrete members

This report highlights the risk of failure if grouted joints between load-bearing prefabricated concrete members are not designed and installed correctly.

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Wrong length blind bolts lead to unsafe bridge structure

Masonry panels rock in wind due to missing wall ties

Critical welding of structural steelwork missed

Misleading instructions for a structural component

Roof collapse at a social club

Trench sheet naming confusion

Poor quality design leads to failure for a small design and build contract

Concerns about punching shear in a flat slab

Specification issue with steel hollow sections

Grouting of joints between load-bearing prefabricated concrete members

Submit a report

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