AbstractResearch work on precast concrete framed structures carried out over the past 20 years has culminated with the large‐scale testing of a five‐storey frame in the USA, a pan‐European project on the structural behaviour of frame connections, and the optimization of some highly engineered concrete elements. This paper reviews the most important advances, explaining to designers the relevance of the results of tests carried out on complete sway frames, on floor systems and connections subjected to gravity, horizontal and catenary forces, and on the wide‐ranging developments of elements such as prestressed hollow core floor units. The design engineer now has more information, through full‐scale experimental testing, realistic numerical studies and 3‐dimensional nonlinear computer programs, to enable safer and more efficient design than ever before.