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Dear friends, I have a box shaped shear wall in my building and I have faced a problem about designing it. I assigned all 4 walls in one pier and used section designer to model the wall and assign bars to the wall. According to etabs manuals etabs can design U,L,T shaped shear walls but I don't...

Dear friends, I have a box shaped shear wall in my building and I have faced a problem about designing it. I assigned all 4 walls in one pier and used section designer to model the wall and assign bars to the wall. According to etabs manuals etabs can design U,L,T shaped shear walls but I don't...

I have a question concerning on working with other application in Visual Basic. I will be very appreciated if I could have your opinion on the following case: Etabs2000 does not have ability to write a program on it. So you have to write it in another language. I have written the whole program...

This case is open to discussion. Are you sure about using both parameters together? First of all, as you described by using Cd we increase the elastic displacement of structure Cd times so we reach to the maximum inelastic displacement. On the other hand, it is used to estimate the ultimate...

I am sorry that I have not been able to give you exactly my idea about the matter. The Cd factor that I meant is as JAE mentioned, is called the deflection amplification factor as expressed in UBC 1994 or NEHRP 1994, not the Cd factor that is used in concrete column design. The Cd that I meant...

Dear Sirs, I have a technical question concerning on calculations of P-Delta effects on concrete structures. I will be very appreciated if I could have your opinion on the following case: According to NEHRP and other codes, it is convenient that in order to estimate the maximum inelastic...

I agree with Qshake about using a smaller building. My master’s thesis was about structural control (both active and passive) with Tuned Mass Dampers. In my thesis I analyzed the linear and nonlinear behavior of 25-story building under earthquakes. As a result of analyses it is seen that by...