Análise do “custo de projeto” em função dos componentes mão-de-obra e material nos estados do Centro-Oeste.

Abstract

The paper examines the effects of labor and material costs on the average project cost in the Midwestern states. Data from the monthly series provided by CBIC and SINAPI were used on average labor costs (R$/m²), average materials cost (R$/m²) and average project cost (R$/m²) during January 2008 to March 2019. The integration and cointegration properties of the series used in the model were considered in the analysis, as well as analysis of variance decomposition and impulse response function analysis. In performing the Unitary Root Test it was found that all series except the “average cost of the material component” in Mato Grosso do Sul were not stationary in level, but became stationary in the first difference. This implied the impossibility of conducting the tests in the state of Mato Grosso do Sul according to the adopted methodology. The results showed that the variables are cointegrated and that variations in labor and material costs generate significant influence on the design costs of the states analyzed.