| Author | Rahman, Mohammed Minhaj Ur |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Building codes have governed designing and construction of structures for far longer than the development of tall buildings, proving their governance as a valid means for safer structures. Safe, however, is a broad term which generally implies that the capacity is higher than required demand, how much higher is not described by that word. This realization leads us to optimization which is the most important aspect of any design field, we in our field similarly must ensure not only a safer but also a cost-efficient structure. This study focuses on one of the codes specified provision which seems to fall under the category which is doubtful when it comes the above stated argument.
Dual systems are the most commonly used system when it comes to simple designs for tall buildings. The 25% backup lateral load carrying capacity criteria is a judgmentally based value which was proposed early in 1950’s when the system was introduced. This condition can make macro changes to the structure and increase the cost tremendously. Three different models are considered in this study intended to be designed differently. The first model does not fulfill the ASCE provision of 25%backup frame, but the rest for this model is designed in accordance with ASCE7-10. The Second model is the code intended designed model with an envelope of forces used to design the backup-frame to ensure that it has 25% load carrying capacity. The third model is designed such that the frame attracts 25% of total base shear. Nonlinear Time History Analysis is performed using PERFORM3D to compute the MCER responses of the structure. A comparative study in then conducted on demand changes, performance changes and material changes for these models designed using different approaches |
| Year | 2019 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Punchet Thammarak; |
| Examination Committee(s) | Anwar, Naveed;Pennung Warnitchai;Thanakorn Pheeraphan ; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship ; |