The identification of non-value adding activities associated with site management in the Nigerian construction industry

Abstract

This study sought to determine the prevalence of non-value adding activities (NVAAs) associated with construction site management in Nigerian, utilising Lagos State as the case study. To pursue the study, the following objectives were formulated: (1) to identify the sources of NVAAs during construction projects; (2) to determine the causes of the occurrence of NVAAs; (3) to ascertain the effects of occurrence of NVAAs on management of personnel on construction sites; and (4) to develop techniques to mitigate the effect of NVAAs on construction projects. Relevant literature related to the matter under investigation was extensively reviewed. An exploratory study on non-value adding activities was conducted; the findings of which determined the focus of the study. This was achieved through a qualitative method where open-ended interviews were administered to purposively selected construction professionals including construction managers, site engineers, consulting engineers, and site managers who were based in Lagos. Additionally, observations of construction activities on site also provided the basis for the primary data collection to gain an in-depth understanding of the factors contributing to the occurrence of NVAAs on site. Three construction firms partook in the survey, and a total of eight construction professionals were interviewed. It was uncovered that improper planning of construction site activities – for example material management, site layout, and the competency of site personnel – came about to non-value adding activities, thereby confirming the situation of poor site execution within the construction industry. This exploration was limited to certain building construction locations in Lagos State, Nigeria. Accentuation was put on the evaluation of non-value adding activity (i.e. waste) related with site management in the construction industry amid the undertaking execution stage. The research was done to assist in creating a proper contribution to the perception of NVAA management measures by way of the application of significant principles that have been deserted, and also to fashion responsiveness for construction company workforces to determine factors that contribute to NVAAs with the goal that the level of waste can be decreased while simultaneously increasing productivity during construction. Suggestions regarding the reduction of NVAAs include the following: (1) Early identification of the root causes of NVAAs would certainly provide a useful information for project stakeholders to design a suitable containment strategy to minimise / prevent the occurrences of waste; (2) Conducting workshops for project team members on a regular basis concerning lean design management principle will also assist in reducing the incidence of NVAAs on site;