http://suspace.su.edu.bd/handle/123456789/2 2026-09-02T13:04:18Z 2026-09-02T13:04:18Z Mia, Emon http://suspace.su.edu.bd/handle/123456789/3050 2026-08-18T05:19:02Z 2026-05-05T00:00:00Z

Seismic Analysis of Multi-storied Building With & Without Shear Wall Using ETABS Mia, Emon This study presents a comparative structural analysis of a 12-story reinforced concrete building using the ETABS software. Three different analytical models were developed to evaluate the impact of shear walls on the overall structural performance. Model 1 represents a conventional moment-resisting frame without shear walls, while Model 2 and Model 3 incorporate shear walls in different configurations. The analysis focuses on key structural response parameters, including story displacement, story drift, and base shear under lateral loading conditions. The results demonstrate that the inclusion of shear walls significantly enhances the stiffness and stability of the structure, leading to reduced lateral displacements and inter-story drifts. Additionally, variations in shear wall positioning between Model 2 and Model 3 show notable differences in performance, highlighting the importance of optimal shear wall placement in high-rise building design. From the results, it can be observed that the maximum story displacement for Model-1 is 3", while for Model-2 it is 0.727", and for Model-3 it is 0.714". This study provides insights into the effectiveness of shear walls in improving seismic performance and offers practical guidance for structural engineers in selecting appropriate lateral load-resisting systems.

2026-05-05T00:00:00Z RAIHAN, MD. http://suspace.su.edu.bd/handle/123456789/3049 2026-08-18T05:14:39Z 2026-05-05T00:00:00Z

Eco-Efficiency and Performance Evaluation of M20 Grade Concrete with Partial Replacement of Cement by Steel Slag RAIHAN, MD. Cement is the main material in concrete that helps everything stick together. However, it is also one of the biggest sources of carbon dioxide (CO₂), which is harmful to the environment. Because of this, researchers are trying to replace cement with more eco-friendly materials. In this study, waste slag from a steel cutting house called Venus sign limited was used as a partial replacement for cement. A well-established scientific explanation in Civil Engineering and Materials Science is known as the “Pozzolanic Reaction. Initial tests showed that this slag can behave like a pozzolanic material, which means it can help in strength development. The slag was first ground into fine particles that could pass through a #100 sieve. Concrete samples were then prepared by replacing 10%, 20%, and 30% of cement with slag, using water–cement ratios of 0.40 and 0.45. Compressive strength tests were conducted at 7 and 28 days. The results showed that when 10% slag was used, the strength slightly decreased compared to normal concrete. However, when 20% and 30% slag were used, the strength decreased further.

2026-05-05T00:00:00Z Arif, Mehedi Hasan http://suspace.su.edu.bd/handle/123456789/3048 2026-08-18T05:09:50Z 2026-05-05T00:00:00Z

Simulation-Based Traffic Signal Design For Selected Intersections In Dhaka Using PTV VISSIM Arif, Mehedi Hasan An automatic traffic signaling system is a critical requirement for improving urban traffic management in rapidly growing cities such as Dhaka, Bangladesh. This research investigates three key signalized intersections—Panthapath, Karwan Bazar, and Farmgate—which represent some of the most congested corridors in the city. These intersections serve as major nodes connecting educational, medical, commercial, and administrative zones. At present, traffic operations at these locations are primarily controlled manually by traffic personnel, resulting in inconsistent signal timing and frequent congestion. In this study, a VISSIM based microscopic simulation approach has been applied to design and evaluate an optimized traffic signaling system. The results demonstrate that the proposed system significantly enhances traffic performance by reducing average delay by approximately 85%–90% and decreasing vehicle queue lengths by 60%–70% compared to existing manual control operations.

2026-05-05T00:00:00Z ALAMIN, MD http://suspace.su.edu.bd/handle/123456789/3047 2026-08-18T04:37:47Z 2026-05-05T00:00:00Z

A Comparative Study on Column-Beam Dimensions and Reinforcement Percentages across Different Seismic Zones in Bangladesh ALAMIN, MD According to, the Bangladesh National Building Code (BNBC 2020) divides the country into four seismic zones based on seismic risk levels. This study evaluates the structural response of an 8-story reinforced concrete building across these zones, focusing on the final beam and column section sizes and the required reinforcement percentages. The analysis uses the Equivalent Lateral Force (ELF) procedure, with earthquake, wind, and gravity loads assigned according to BNBC 2020 guidelines. Structural modeling and design are carried out in ETABS based on American Concrete Institute code provisions under a Special Moment Resisting Frame (SMRF) system. Service conditions are checked using property modifiers defined in BNBC 2020 to evaluate story drift limitations, sway, soft story effects, and torsional irregularity. Ultimate strength checks are performed using ACI 318-11 property modifiers. The final section sizes are selected after ensuring that beam-column capacity ratios satisfy both service and ultimate requirements. The comparative results show that structures in Seismic Zone 4 require the highest reinforcement and largest section dimensions, followed by Zones 3, 2, and 1.

2026-05-05T00:00:00Z