Concrete-Filled Double-Skin Steel Tubular Columns: Behavior and Design provides a thorough review of the recent advances on the behaviour and design of concrete-filled double-skin steel tubular (CFDST) columns. Drawing on their extensive knowledge and research, the authors cover topics such as different CFDST columns under axial compression, innovative techniques including the use of rubberised concrete, columns with different cross-sections, and steel material envelops and failure modes. This book is an overview of research carried out by this highly experienced and leading research group with specialist knowledge in the topic. It is an invaluable resource for researchers, graduates and post-graduate civil engineers and civil engineering designers.

• Provides a comprehensive overview of advances on the behaviour and design of concrete-filled double-skin steel tubular (CFDST) columns over the past decade
• Gives deep-dive explanation of important concepts such as the void ratio which makes these girders different from conventional concrete-filled steel tubular (CFST) columns
• Explains the failure modes of short and slender columns under compression, with detailed illustrations and photos from both real-life and virtual tests performed by the authors
• Presents in-depth analysis of the ultimate strengths of CFDST columns with different steel envelops and concrete infills
• Makes a detailed comparison with available international codes, such as Eurocode 3, and provides recommendations for future studies
• Discusses new innovative confining stress-based design for different types of CFDST short columns

Mostafa Fahmi Hassanein has completed his PhD at the age of 31 years from Tanta University, Egypt. Within his PhD study, he has participated in a doctoral steel course at Lulea University of technology, Sweden. He is currently "Professor of Structural Engineering" at the Department of Structural Engineering at Tanta University. His research focuses on the analysis and design of steel and composite structures, with the aim of improving the Design Codes and Standards that are currently used worldwide (e.g. EC3, EC4, AISC and AS 4100), to design more effective structures with minimised initial material costs and life-cycle costs. He has published more than 95 papers in international/Elsevier journals. His research works show his ability to collaborate with researchers from different disciplines and countries. He has served as a reviewer for different reputed international journals and conferences. He has also invited to the 8th European Solid Mechanics Conference (ESMC), Graz, Austria, 2012 as an "Invited Speaker". He has awarded the "State's Incentive Award in the Engineering Sciences" in 2015 from the Academy of Scientific Research and Technology, Egypt. Recently, he has awarded the "First Class Excellence Medal", from the Egyptian President in 2017. He is also a Consultant Engineer in the field of "Design of Steel Structures" in Egypt. He serves as an editorial board member for Thin-Walled Structures, ISSN No. 0263-8231, Elsevier. Based on his achievements, his biography has been accepted into Who's Who in the World, which is comprised of the top 3% of the professionals in the country. He also worked as a professor in the Southwest Petroleum University, Chengdu, China, between July 2019 and Jun 2020. More recently, he has named in Stanford University List for Best 2% Scientists Worldwide, 2020 and 2021.Dr Mohamed Elchalakani is Associate Professor and the Director of the Structural Laboratory at the University of Western Australia. He is the author of 2 important books "Single Skin and Double Skin Concrete Filled Tubular Structures-Analysis and Design" and "Geopolmer Concrete Structures with Steel and FRP Reinforcements-Anaysis and Design" published by Elsevier. He is a committee member of Australian Standard BD 023-structural steel. He is listed in Stanford University current list of the top 2% scientists in the world where he is ranked in the top 0.7% among academics in Civil Engineering worldwide. His researchgate score is 40.1 which is in the top 97.5% of its users worldwide. He holds few patents on Building Integrated Energy Storing Systems. He serves on the Editorial Board of the Journal of Structural Engineering published by the American Society of Civil Engineers (ranked 1/450), Scientific Reports Published by Nature, the Australian Journal for Civil Engineering, and Structures Journal Published by Elsevier. Dr Elchalakani current Google Scholar citations are in excess of +5000 with h-index 40 where he authored or co-authored +250 technical papers. He is also a Chartered Professional Engineer in Australia (CPEng) and a Registered Building Practitioner (RBP) and also Registered in the National Professional Engineer (NPE) in Australia, Asia and Egypt. Dr Elchalakani received several awards, including the Holman Medal for the most outstanding PhD thesis and the Hunt Award for excellence in Research in Engineering. He also received the prestigious Japanese Society for Promotion of Science Fellowship. His total research funds today is in excess of $1.5m from competitive grants, consutlting, and industry funded projects.

1. Introduction 2. Development of CFDST columns 3. CFDST short columns formed from carbon steels 4. CFDST columns formed from stainless steel outer tubes 5. CFDST slender columns formed from stainless steel outer tubes 6. Rubberised CFDST columns 7. Future Research