In developing key documents such as national building codes, regional emergency response plans, and risk management strategies, it is critical to understand the causes and effects of structural collapse. This paper presents ongoing research activities to establish a robust procedure for accurate assessment of the collapse of steel frame structures. A cohesive zone method based strategy is being...

This paper presents current design approaches found in the U.S. and European building codes and standards for the prevention of progressive collapse due to abnormal loading. Because the definition of abnormal loading is not well established, design provisions are based on an approach that protects buildings by means of strength, ductility and redundancy. The effectiveness of seismic detailing o...

Purpose : Finite element modeling (FEM) of the stress-strain state five-storey frame building with girderless floors and basement caused by progressive collapse. Methodology FEM is performed in MicroFe software removal medium column using limit equilibrium theory. Development three-dimensional model on a rigid base. Research findings It shown that collapse impossible after experimental building.

Ethiopia, evolved from Tigray, is known by its history of having been an empire (e.g., the Axumite kingdom) and independent. The fundamental weakness Ethiopian state has lack inclusive national consensus, hampered oppression dilemma democratizing a feudal state. post-1991 TPLF-EPRDF-led Ethiopia experimenting with federalist nation-building to address Ethiopia’s historical contradictions: class...