Assessment of social sustainability in mega construction project in Tanzania: Contractors' perspectives

Mega construction projects are considered to be large, complex, capital-intensive investment and cover a large area. However, its implementation has been affecting the environment, economic and social dimensions of sustainability. Much effort and studies have been placed on environmental and economic aspects with little attention to the social dimension. This paper aims to assess the implementation of social sustainability in Mega construction projects in Tanzania as practiced by contractors during the construction phase. The research employs a qualitative approach through the Case study method. Three ongoing mega infrastructure projects were selected as they were unique mega projects in Tanzania. A series of semi-structured interviews were conducted with project contractors and selected community members. The study reveals that a total of 29 attributes of social sustainability were implemented in Mega construction projects in Tanzania whereby, Safety, health and wellbeing and benefit-sharing were largely implemented.