The main aim of this book is to provide practical advice to designers of plated structures for correct and efficient application of EN 199315 design rules. In chapter 1 the purpose the scope and the structure of the book is explained. In chapter 2 a rather detailed and commented overview of EN 199315 design rules is given following the structure of the standard. Shear lag effect as well as plate buckling problems due to direct stresses shear forces transverse forces and interactions of these