Lean-Construction: practical insights for innovating construction management This book grasps some of the most practical and applicable concepts in optimizing construction projects and the objective is, to dig deeper into what is behind this so-called lean-construction . Six topics are selected, based on the criteria of highest relevance in conducting construction projects. Each chapter is introduced with a provocative key questions, such as why is construction progress always lower than planned , why is building a steering room more than installing a performance board or the question of how to steer a construction site with takt-time and many other topics such as performance management, or integrated collaborative planning. The content of this book will simplify your life as a construction manager, planner, owner or consultant. And at the same time it is easily understandable and fun to read. Alexander Lange Prof. Dr.-Ing.