E – 2046 Seismic Design of Diaphragms Composed of Steel Beams and Steel Deck with Concrete Fill Based on ASCE/SEI 7-22 Code

The objective of this course is to assist a licensed design professional, practicing structural engineers, forensic structural engineers, consulting engineers, building officials,  educators, students or/and a licensed general contractor to deeply know, and understand the structural analysis, seismic design, detailing, and construct ability  of  diaphragms composed of steel beams and steel deck with concrete fill . The importance of this course lies in the fact that there are not a sufficient number of references dealing with this topic, so the course was designed to be a guide for the structural engineers. This course is intended especially for the practicing structural engineer, though it will also be useful for building officials, educators, and students.

One of the most neglected elements in the design of buildings is the horizontal floor diaphragm and its interaction with the lateral load resisting systems. Most multi-story structures depend on the floor slab and roof systems to act as horizontal diaphragms to collect and distribute the lateral loads to the vertical framing members, which provide the overall structural stability.

In steel structures, floor diaphragms are most commonly constructed using composite steel deck with concrete fill, although other systems may also be used. Somewhat surprisingly, given the importance of diaphragms to the overall building response, there is no universally agreed design procedure for determining the diaphragm actions and distribution into the seismic-resisting systems. In addition, the specific issues related to beam design for members collecting lateral loads in composite floor systems has gone largely undocumented.