engleski

Construction Baseline Productivity: Theory and Practice

In this paper the teoretical basis for construction labor productivity measurement is presented. In particular, the theoretical basis for baseline productivity measurements is developed by examing a productivity database consisting of 23 projects involving masonary construction. An important hypothesis is presented showing that as the design is becoming more complex, the baseline productivity worsens. It is also hypotesized that higher values of the coefficient of various indicates a higher variability in amangement and craft skills and in the use of technology. Two measures are proposed to measure the performance of individual projects: The disruptions index and the project management index. These two measures identify the best and worst performing projects. Cumulative probability distributions of the disruption index and the project management index were also developed to evaluate the 23-project databse and compare it with other databases. The hypotheses developed from the 23-masonry project databse were tested against an 8-project database were tested against an 8-project database of concrete formwork, and a 12-project database of structural steel erection. Strong support for each hypothesis was found using the two additional databases.

Labor productivity; Construction; Baseline; Theory

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