This Digest is part of a suite of related documents containing guidance for the construction industry on structural fire engineering design. The intention is to produce performance based guidance that brings together fire engineering and structural engineering providing a framework within which designers are free to develop site specific solutions based on real performance criteria. The Digests contain information complementary to the existing and emerging fire engineering codes and standards. Each Digest may be used in isolation or as part of the full integrated suite. This Digest summarises the design methods for assessing the performance of concrete structures in fire and considers related issues such as spalling of concrete and whole building behaviour. It also provides a number of important references related to design procedures for concrete structures in fire. 8 pages.