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To make a steel design depends on different stages of the project. During the design you have to know how to built it, for simple structures no problem , but for complicated large structures its different. Keep in mind all the basic details, size of the different parts, weight of the parts and also shear stability during erection of the structure to prevent all costly temporary shear elements. Its a complete puzzle you design, but also you design a huge part of the costs.
Building structures must be constructed to dissipate a large amount of seismic energy in order to achieve economical earthquake‐resistant constructions. In this paper, recent research findings on the effectiveness of using steel triangular plates welded as the added damping and stiffness (ADAS) device for earthquake‐resistant structures are presented. Experimental results indicate that a properly welded steel triangular‐plate added damping and stiffness device (TADAS) can sustain a large number of yielding reversals without any stiffness or strength degradation. The effects of the ratio of the TADAS element stiffness to that of the bare frame, and the ratio of the entire frame yield strength to that associated with the TADAS element on the seismic response of the added damping and stiffness structures are discussed. Based on these studies, a design methodology and an example are developed for the application of the TADAS device in earthquake‐resistant constructions.
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