Construction time-cost model in Croatia

The paper deals with the applicability of the «time-cost» model for calculating the sustainable construction time for building projects in Croatia. In this model the time is expressed as a function of money in the project, while the specific constants K and B need to be determined. These constants depend on economic characteristics of the country or a larger area and therefore had to be separately calculated for a region with similar economic characteristics. The modeling of the constants was performed for two groups of building projects – the roads and residential and office multi-storey buildings. The obtained results have been analyzed and compared to the corresponding results from abroad.