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CROSS Safety Report

Demolition of Multi-Storey Car Park (MSCP) reveals poor concrete

Report ID: 313 Published: 1 January 2014 Region: CROSS-UK

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Overview

During the demolition of a MSCP, the quality of the concrete in critical load bearing members was found to be extremely poor.

Key Learning Outcomes

For design engineers and construction professionals:

  • Careful consideration should be given to concrete mix design to ensure the required strength and durability are achieved

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A reporter was involved in the demolition, by the controlled use of explosives, of an MSCP. This was a lift slab construction which had been previously repaired (2-3 years ago) and had continued to deteriorate. The concrete within critical load bearing members was found, during the drilling process for the explosives, to be extremely poor quality.

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