The paper investigates the so-called “simplified methods” of construction cost estimating: from the simplest single-rate estimates to complex elemental and feature-based cost analysis. Method databases of recorded or calculated unit rates and a wide choice of data manipulation techniques, such as intuitive or mathematically supported case-based reasoning, statistical inference and non-parametric modeling are looked at. The consequences of using input from real-life projects and uniform purpose-made calculations (such as those published in Polish pricebooks) are also analyzed.
The paper presents a case study of an innovative method of porous pavement rehabilitation works. The innovation consists in applying an additional piece of plant to collect the supplied asphalt-aggregate mix and feed it pavers. Observations and measurements of construction process output collected during an A73 highway rehabilitation project in the Netherlands can be used for creation of asphalt-aggregate mix supply models and comparing efficiency of using certain plant sets.
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