Structural fuse , concepts and design

structural fuse is a concept to protect important parts of the structure by sacrificing less important members. Fuse is a member that is designed weakly on purpose to absorb the excessive loads by its failure. In this article I want to introduce different types of structural fuse. What is the role of structural fuse? The […]

Plastic design vs elastic design

Plastic design vs elastic design: honestly, the difference between these two terms was one the biggest ambiguities when I was in college. Plastic and elastic and  designs are two different design approaches. Both of these methods are efficient to design an optimized steel structure. in the past, most of structural designers were reluctant to use […]

End return in welding

End return plays a significant role in welding. End returns, also known as boxing, are when we continue the fillet weld around the corner of a member. This  extension of the primary weld provide more resistance to ensure the perfect functionality of the connection is seismic loading. According to several codes use of end returns […]

Diagrid Structures

Diagrid  structures are constructed by attaching diagonal members. It can be constructed from steel, wood, concrete or other materials. Nowadays, diagrid frames are commonly used in the construction of skyscrapers and tall buildings. Steel diagrid One of the most popular materials to build the diagrid system is steel. Circular and rectangular steel sections are more […]

Web crippling in steel members

Web crippling behavior: Web crippling failure is likely to happen when large concentrated forces are applied to thin-walled flexural members. American Iron & Steel Institute has defined four different crippling condition based on the location of failure (interior or exterior) and the number of loads involved (one or two). Figure below illustrates these conditions including […]