An investigation into the quality of workmanship on construction sites. A case study of construction sites in Nairobi.

Abstract

The aim of the study was to address the problem of low level of workmanship in Kenyan construction sector, which manifests itself in defects on the final products. The role of the sector in the economy cannot be over emphasized, and it is a forgone conclusion that the sector is here to stay. The study hypothesized that quality management factors influence the quality of workmanship on construction sites. Construction management determinants are the essential and desired site management factors to be observed in order to achieve the right quality end product. These are; supervision, training, experience, workers motivation, communication on site, clarity in specifications, subcontracting and provision of proper tools and equipment's. In order to achieve the objectives, the study carried out a survey of concreting works on accessible ongoing construction sites in Nairobi. Questionnaires were administered to contractors, workers and architects while a checklist was used to observe the level of workmanship as well as the level of construction management determinants. Data from the sites was statistically analyzed. Regression analysis between the two major variables; level of workmanship and construction management determinants was carried out. The study concluded that inadequate construction management has resulted to low level of workmanship. It recommends close observation of construction management factors like supervision, training and ensuring good communication on site in order to minimize the costs and effects associated with poor workmanship.