Towards the Use of High Strength Steel for Construction Productivity

• Main Authors: Cai, Yanqing, Zhao, Mingshan, Chiew, Sing Ping
• Other Authors: School of Civil and Environmental Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2017
• Subjects: Construction productivity; High strength steel
• Online Access: https://hdl.handle.net/10356/80597; http://hdl.handle.net/10220/42780
• Institution: Nanyang Technological University

With rapid advancement in on-line steel production processes, it is now possible to produce high strength steel at affordable and competitive cost. This leads to the development of design codes and construction technologies where higher strength and performance steel are now permitted to be used. Due to its higher strength to weight ratio, saving in total materials and easier construction, higher productivity could be achieved by replacing normal strength steel with high strength steel in design and construction. However, there are key differences between high strength and traditional normal strength steel because of the way it is produced as well as limiting design considerations which will impede greater usage of high strength steel. This paper discusses the novelty as well as challenges of using high strength steel to improve construction productivity. The study of the tensile behavior of Grade S690 T-stub joints is highlighted to illustrate the difference between high strength and normal strength structural steel. The design issues of using high strength Grade 600 reinforcing steel bars and high strength steel in composite columns are also highlighted.