Concrete Design Guide. No. 7: Design of post-tensioned slabs

The design of concrete slabs and beams is not generally affected by fire design requirements. However, these can be a governing factor in the sizing of columns, particularly in multi-storey buildings. This article therefore concentrates on the guidance given in Eurocode 2 on the sizing of concrete columns for different fire resistance periods.

This short note highlights some of the salient aspects of the design and construction of liquid-retaining structures in reinforced concrete. The guidance is based on Eurocodes BS EN 1992-1-11 and BS EN 1992-32 and the corresponding UK National Annexes.

The design for horizontal actions, fire and materials is considered, along with simplified methods of design. Throughout this article the Nationally Determined Parameters (NDPs) from the UK National Annexes have been used. These enable Eurocode 6 (BS EN 1996-1-1) to be applied in the UK.