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Modelling the set of earthworks machinery with the use of computer simulation

100%

Rogala W. , Anysz H.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

2019

tom Vol. 28, No. 1

161--168

The paper presents the comparison of deterministic and stochastic approach for modeling the set of earthworks machinery. Simulation takes into account the normal distribution of cycle time and efficiency of machines and points out its influence for total construction works time. Results of the simulation indicate the need of identification time and efficiency deviation as a risk factor, which can cause delay whenever earthworks cycle includes the serial work of several machines.

The control of the mass of an aggregates deliveries and its impact on the effectiveness of earthworks execution

86%

Anysz H. , Rogala W.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

2018

tom Vol. 27, No. 3

280--290

An essay presents the method and tool which can be used to control the mass of aggregates deliveries under construction site conditions. The method based on statistics allows determining the optimal quantity of transports to be inspected, required to estimate the total sum of loose materials deliveries assuming estimation error and confidence level conditions. Inspection based on described method allows to improve the effectiveness of earthworks execution as well as gives the possibility to evaluate the quality of the supplier.