Assessment of Horizontal and Vertical Integration among Stakeholders in the Sustainability of Infrastructure Projects in Addis Ababa City
研究了亚的斯亚贝巴市基础设施项目中利益相关者的横向与纵向整合对项目可持续性的影响，发现整合对经济社会环境发展有积极作用，而缺乏整合则带来负面影响。
This research aimed at assessing and investigating the effects of horizontal and vertical integration among the key stakeholders and thereby the sustainability of infrastructure projects in Addis Ababa. The research employed a mixed method approach in collecting and analyzing data. This approach uses both qualitative and quantitative strategies in the collection of data for the study. The study used purposive sampling technique to collect data from the sample respondents. Thus the selection included project owners or managers of respective service providers, project managers, other professionals’ consultants and representatives of the community who are close to all stages in the functioning of the projects. The data were obtained from 86 sample respondents taken out 110 total population size. Data were analyzed and interpreted using descriptive statistics using SPSS20.0 version and qualitative technique. The study revealed that integration between service rendering organizations in the provision of sustainable infrastructure projects is essential and further showed that project integration has a positive effect on sustainability of socioeconomic and environmental development. On the other hand the finding of the research also showed that lack of integration has brought tremendous undesirable effects on the social, economic and environmental realities.