SciELO - Scientific Electronic Library Online

vol.12 issue1Solar protections in the brazilian regulation on the energy efficiency of commercial, service and public buildingsComparative analysis of the properties of composite mortar with addition of rubber powder from worn tires author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Ambiente Construído

On-line version ISSN 1678-8621


COUTINHO, Lêda Sílvia de Aguiar Lédo et al. Modeling the execution time of construction projects: case study at the Federal University of Pará. Ambient. constr. [online]. 2012, vol.12, n.1, pp.243-256. ISSN 1678-8621.

This article proposes the adoption of a numerical prognosis model to estimate the variable "execution time" for public projects in an objective way. The field work consisted of the application of statistical methods for analyzing data from projects that were bid and contracted by the Federal University of Pará (UFPA) between 2006 and 2009.. Data analysis involved linear regression and transformed functions. After the stratification and initial treatment of the data, the evidence adopted for the construction of the final model was limited to 102 out of the 225 projects originally investigated, resulting in the following statistical parameters: correlation coefficient (R) of 0.899, coefficient of determination (R2) of 0.808, adjusted coefficient of determination (adjusted R2) of 0.796, and standard error (Se) of 0.41. These parameters show a strong linear correlation between the variables, indicating that 79.60% of the variability of the execution of a public project is jointly caused by variations in the gross floor area, the estimated cost, the operational technical capacity of the client organization; the operational capacity of the company; the type of service, and the season.

Keywords : Modeling; Execution time; Public Projects; Linear Correlation; Numerical Model.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License