Juniper Publishers Journal Of Civil Engineering

 Civil Engineering Research Journal- Juniper Publishers Abstract Different methodological routes to the study of cost overruns are evident in the literature. A critical review reveals several gaps, particularly the lack of methodologically robust explanatory evidence to support the assertions that geotechnical risks significantly impact on cost overruns in highway projects. This study evaluates and select an adequate philosophical/methodological orientation relevant to provide a geotechnical narrative to the phenomena of cost overruns in highway projects. This paper thus sets out the underlying philosophical and logical reasoning that served as a guide on the conduct of a study, carried out to illuminate geotechnical trajectories to cost overruns in highway projects. Critical evaluation of the different philosophical stances evident in the literature was carried out, while factoring in the practicality and compatibility of the methods implicit in the various research strategies. Th...

 Civil Engineering Research Journal- Juniper Publishers Introduction The Niger Delta is the 9th largest Delta in the world with an area of 19,135 square kilometres. It is one of the largest wetlands in Africa. The whole basin is dissected by numerous creeks, streams, marshes, and lagoons [1]. The terrain of most parts of the Niger Delta is characteristically poorly drained, from the inundation of the adjoining lowlands forming swamps and coastal islands. However, the upper northern limit of the Niger Delta, is characterized by tropical rainforest woodland (Figure 1). This is the zone with the most extensive dry land, and the population distribution is denser, with far larger settlements than other wetland zones. This heterogeneous configuration of the terrain thus has correspondingly varying geotechnical implications for highway development. The environmental condition of most parts of the Niger Delta makes the use of conventional pavement designs, materials and construction method...