Viewpoint: Which way now for codes and standards: Prescription, performance-based or what?

This detailed book with excellent examples and illustrations will make a useful reference text on matrix methods of analysis, concludes Ian May.

Among other topics, this month's letters criticise a recent Technical Guidance Note on lintel design and explore the potential to adopt new technologies from other industries.

This month Ron Slade has selected two sketches – by Luis Correia of AKT II and Jakub Nowikowski of Pole Structural Engineers.