Study on Application of Constructability Principles in Addis Ababa’s City Road Corridor Development Projects

Abstract

Enhancing the efficiency and quality of construction projects, while minimizing costs and timelines are critical issues in construction engineering and management. The concept of Constructability has re-emerged as a proactive approach that positively impact project quality, cost, and duration. The objective of the research is to study the Implementation Practice of constructability concepts in corridor development projects in Addis Ababa, Ethiopia. Evaluating the level of importance and application of constructability concepts, in local construction practices, with a particular focus on stakeholder perspectives and the importance of these principles. Utilizing a mixed-methods strategy, incorporates both quantitative and qualitative in data collection and analysis to respond to the research inquiries. A total of 40 constructability concepts were identified across the project life cycle, encompassing conceptual planning, design and procurement, and field operations. Data was collected through surveys and interviews with those stakeholders directly involved in corridor development projects, including contractors, consultants, clients, and regulatory authorities. The relative importance index (RII) method applied to prioritize the level of importance of constructability concepts. From the result it is found that the first three importance concept are ―the use of advanced information technologies‖, ―the integration of construction knowledge in the planning phase‖, and ―the early identification of project team members‖, with RII values of 0.951, 0.930, and 0.910, respectively. The study shows that the integration of advanced information technologies, such as Building Information Modeling (BIM) and project management software, can significantly enhance the planning and execution phases of construction projects. The research highlights a notable commitment to examining political and legal factors prior to the design stage, which is crucial for understanding and applying constructability principles in government-led projects in Addis Ababa. To improve constructability in construction initiatives throughout the city, the study recommends fostering greater stakeholder engagement and collaboration, alongside a dedicated effort to educate and train pertinent individuals on the significance and application of constructability principles. Ultimately, the study proposes strategies for enhancing the implementation of a constructability program moving forward.