Date of Award


Document Type

Master's Project

Degree Name

Master of Engineering (ME)


Civil & Environmental Engineering


Civil Engineering

Committee Director

Zia Razzaq



Committee Member

Mojtaba Sirjani

Committee Member

Shahin Nayyeri Amiri


This research report presents the outcome of an investigation of lightweight ribbed steel dome structure. The proposed ribbed dome structure is studied both numerically and experimentally under static, natural vibration, and base excitation conditions. The base excitation is considered in the form of a sinusoidal as well as seismic loading in the form of a scaled-down 1940 El Centro earthquake. A numerical study of the ribbed dome is also conducted including a tuned mass damper (TMD). The performance of the dome is also compared with that of a hexagonal vertical structure showing a superior response of the dome under seismic loading. Both experimental and theoretical results with TMD are in good agreement. Lastly, the numerical study shows a significant decrease in vibration of the ribbed dome when TMD is utilized.


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