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Tower crane base designs

A reporter’s firm has been involved in the design and checking of numerous tower crane bases and have come across many examples where the supplier of the tower crane has supplied incorrect loadings. These incorrect loadings could have led to crane failures had the errors not been spotted.

Potentially unsafe buckling resistance checks using software

A number of anomalies were detected in the outputs from a proprietary structural steelwork design program.

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.

Accelerated corrosion of telecoms mast holding down bolts

During an examination of a 20m high telecoms mast, a reporter found that there had been accelerated corrosion of the galvanised holding down bolts.

Overloading of existing steelwork frame

Inadequate structural investigations and design of alteration works leads to damage to multi-storey flats.

Concern over modelling of concrete frame building for construction stage

Independent check shows inadequate modelling of concrete frame building with transfer slab.

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Inadequate design submissions for alterations to an existing building

An upper storey extension was designed without considering the effect on the structure below.

The management of design related risks: structural, civil and fire engineers

Significant, and tragic, failures involving structures continue to occur: fires in apartment blocks in Milan, London and Taiwan, and structural collapses in Florida and Nigeria being recent examples. This paper gives emphasis to the need for engineers to consider risk management at a fundamental level.

Risks associated with steel gates 

A reporter has noticed recurring defects with large gates in residential apartment complexes, including at least three where there were serious incidents, one involving a fatality.

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.

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Tower crane base designs

Potentially unsafe buckling resistance checks using software

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

Accelerated corrosion of telecoms mast holding down bolts

Overloading of existing steelwork frame

Concern over modelling of concrete frame building for construction stage

Share your knowledge

Inadequate design submissions for alterations to an existing building

The management of design related risks: structural, civil and fire engineers

Risks associated with steel gates

Specification issue with steel hollow sections

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