Earthquake load is applied at….?

Regardless of how the amount of earthquake load is computed, we need to know how it is going to be distributed in each story. Then we can find out which structural members are more critical than others and we can also optimized our structural design by using reasonable justifications. If Fi is a resultant of […]

Seiemic waves caused by earthquake

As we have discussed in the previous article, earthquake happens when a huge amount of energy is released due tectonic plates movements. The immediate outcome of earth is sudden movement of the ground located in the vicinity of earthquake center. The huge amount of energy is transferred throughout the ground layers in all directions until […]

Earthquake loading lesson 1

Earthquake loading lesson 1 Earthquake loading is usually a reminisce of striking ground movements for all of us. Its been always a frightening matter for occupants as well as structural engineers. Unfortunately there are many common mistakes in both construction and design of multi-story buildings that eventually lead to collapse. As a result I have […]

Static, quasi-static and dynamic

Static, quasi-static and dynamic properties These technical terms are usually a bit confusing for beginners and occasional users. This article is aimed to explain the differences and assumptions of each term. A static problem is when acceleration is zero. Therefore, based on newton law the sum of all forces is equal to mass multiplied by […]

soil creep in embankment dams

In case of dam construction, massive soil embankment is subjected to the presence of water which can provoke the occurrence of soil consolidation. Consolidation is a 2-step process during which soil experiences a time dependent settlement. In scientific terms, the second step is called creep (also known as secondary consolidation) occurring long after the soil […]