Split responsibilities on temporary bracing of steelwork
A project is supported by numerous steel columns which start at ground floor level. Because of various site constraints, several columns are kinked at upper floor levels; the resulting horizontal forces are taken back to a substantial concrete core through the floor beams or slabs. The second floor slab is post tensioned concrete and the contractor decided to erect the steel first and install the second floor slab later, when the steelwork and concrete subcontractors would not interfere with each other.
Retaining wall concerns and the stance of a local authority
A reporter was asked by a Client to assess a retaining wall built on their boundary by a neighbour who had erected a new dwelling. Of reinforced concrete block work construction the wall is about 2.75m high at its highest point and retained the Client’s land. From a visual inspection the wall appeared sound. However, a review of the calculations and a typical section, gave serious concern for its strength..
CROSS aims to improve structural safety and reduce failures by using confidential reports to highlight lessons that have been learnt, to generate feedback and to influence change.
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'Structural safety' refers to the strength, stability and integrity of a structure to withstand the conditions that are likely to be encountered during its lifetime. Structural safety is achieved through the proper procurement, design, construction and maintenance of the structure and the application of best practice.
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