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Temporary instability of columns

Concerns were raised by a reporter on the temporary stability of concrete columns during construction.

2 February 2023

CROSS Safety Report

Report ID: 872

Region: CROSS-UK

Connection fixity considerations for steel frame modelling

This report concerns the modelling of joints when using computer programs. In some cases, engineers are applying rotational releases to joints in models but subsequently designing the connections as rigid. This leaves a fundamental mismatch between analysis and design which may lead to unsafe structural connections argues a reporter.

17 November 2022

CROSS Safety Report

Report ID: 1139

Region: CROSS-UK

Punching shear in concrete slabs at perimeter columns

A reporter raises concerns about the underestimation of bending moments in perimeter columns when assessing punching shear in adjacent concrete slabs. Punching shear failures can be brittle and catastrophic. Designers need to include the appropriate ultimate moment in the design actions.

14 October 2022

CROSS Safety Report

Report ID: 1122

Region: CROSS-AUS

Column stability during erection

A reporter highlights the importance of ensuring steel columns are temporarily supported until they are sufficiently tied and supported by the permanent structure.

13 December 2021

CROSS Safety Report

Report ID: 1038

Region: CROSS-UK

Structural corrosion in a swimming pool building causes concern

A survey showed severe corrosion of previously repaired steelwork columns adjacent to a public swimming pool.

30 July 2021

CROSS Safety Report

Report ID: 1004

Region: CROSS-UK

Steel column erection anchoring connection failure injured worker

This report describes how a construction worker was injured during the erection of a steel column due to shortcomings in erection procedures and inadequacies in a column base connection.

10 May 2021

CROSS Safety Report

Report ID: 992

Region: CROSS-US

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.

30 April 2021

CROSS Safety Report

Report ID: 961

Region: CROSS-AUS

Execution not matching design assumptions

This report highlights how the connection of steel columns to twin beams acting as a transfer beam was overlooked and created an eccentric loading condition.

14 October 2020

CROSS Safety Report

Report ID: 968

Region: CROSS-UK

Safety concern for outdoor video screens

This report is to raise concerns about the suitability of video screen support systems being used outdoors for public displays.

14 October 2020

CROSS Safety Report

Report ID: 979

Region: CROSS-UK

Inadequate punching shear reinforcement in flat slabs

This report highlights how remedial works were required in a number of residential buildings after inadequate punching shear reinforcement was identified.

14 October 2020

CROSS Safety Report

Report ID: 950

Region: CROSS-UK

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