Many construction projects are unique,complex , risky and are heavy capital investment, but also face many failures. Infrastractural development is very critical to the economic growth of developing countries, particularly in Africa.
Construction should company the industrial sectors not vice versa. ie , at first the manufacturing sector should desire the infrastructural facilities then construction could efficiently meet this desire. I think in Africa the government suppose that infrastructural construction would bring the economic growth but it only meets recourses loss.