Semi-rigid floor-to-wall connections using side-framed lightweight steel structures: Concept development

This paper presents the development of side-framed lightweight steel (SFLS) structures featuring semi-rigid floor-to-wall connections. Initially, the effect of variation of connection rotational stiffness on the design of a two-storey frame is investigated considering different construction methods. The results revealed a considerable effect of the connection rotational stiffness on the design of the joists and studs. A semi-rigid connection is then developed using validated finite element analyses. The developed SFLS system enables more efficient designs addressing the predominant limit states of the conventional designs with fewer and lighter flooring members and connections. •A semi-rigid connection is developed using Side-Framed Lightweight Steel systems.•Sequential and continuous construction methods have been considered.•In-plane load-transferring mechanism is provided within the developed connection.•SFLS can lead to more efficient design than conventional lightweight steel systems.•Connection stiffness estimation agrees well with finite element analysis results.