**4. Results and Discussions**

In this section, the results obtained from the static and dynamic analyses are discussed, and possible relationships between shear lag and the three different factors are studied in three sections. As was mentioned in the previous sections, the shear lag factor is the ratio of the axial force in a corner column to the middle column axial force in each story. It is worth mentioning that shear lag factors above one are referred to as positive shear lag and below one are referred to as negative. In the first part, the effect of lateral load types on the shear lag of framed tube structures is investigated. For this purpose, three types of lateral load including wind load, static earthquake load and dynamic earthquake load were considered to be subjected to the models. In the second section, the effects of plan geometry on the shear lag of tubular structures were studied and three different plan geometries with different heights were analyzed against different lateral loads. In the last section, the effects of height in framed tube structures on shear lag phenomena were discussed without considering any other factors.
