The relationship between project manning levels and craft productivity for nuclear power construction
Decisions to accelerate construction schedules--increasing craft manning levels above what is considered normal levels--usually reduce craft efficiency. This article examines the relationship of relative manning levels to craft productivity and the relationship between manning density and productivity, all for the purpose of providing a reference point for estimating optimum project manning levels when translating man-hour inefficiencies estimated by multiple regression equations into dollars. In doing so, it explains the negative effects of compressing construction schedules and the literature on quantifying the relationship between manning levels and craft productivity. It then discusses a study involving the construction productivity losses for a nuclear power plant, one that describes a multiple regression analysis that uses such variables as construction duration, project size, number of units, nuclear reactor type, construction complexity, and location.