THE EFFECTS OFPRODUCTIVITYAND WORK FLOW VARIABILITY ON CONSTRUCTION JOBSITE LABOUR PERFORMANCE IN NIGERIA

📄 Project Abstract

The management of daily labour productivity variability on site is an important aspect of lean thinking. The lean construction technique suggests that reducing variability gives better labour performance. Therefore, this work examines the analysis of labour productivity data of four cement-based activities which are; block laying, concreting, wall plastering and tiling from two hundred and forty-four construction sites of single storey buildings in Abuja metropolis. The objective was to determine the relationship between labour productivity variability and crew jobsite performance andalso to identify the level of gap between the present performance of all the builders handling the sampled projects and expected benchmark performance. The daily method of productivity data collection was adopted in this research. The data used were subjected to test for normality and found to be slightly normal with skewness values of 0.425, -0.247, 0.645 and 0.336 forblock laying, concrete activity, wall...