Izvorni znanstveni članak
https://doi.org/10.2478/otmcj-2021-0031
Determination of construction process duration based on labor productivity estimation: A case study
Darja Kubečková
; VŠB-Technical University of Ostrava, Faculty of Civil Engineering Department of Construction L. Podeště 1875, 708 00 Ostrava-Poruba, Czech Republic
Stanislav Smugala
; Department of Construction, Faculty of Civil Engineering, VŠB – Technical University Ostrava, Ludvíka Podéště
Sažetak
Monitoring labor productivity and how to
decrease construction costs are the key issues in the planning
process of a construction project. The CONTEC automated
system combined with statistical methods assists
in predicting the amount of time required to complete
construction works according to the specified number
of deployed work crews, technological processes, and
labor required for certain production in person-hours.
This study applies statistical analyses and probability
theories for plastering work, which represents a labor-intensive
construction process. The goal of the research is
to determine the probability of completion of the construction
process based on monitoring the mean value
of performance. By application of statistical analyses a
decrease in the performance standard has been proved
compared with the planned values given in the CONTEC
database. The decrease in performance, which was also
caused by the number of days with unfavorable climatic
conditions and demonstrated by performing interval
estimates based on the collection of statistical data, was
later confirmed by a relative frequency test. The measures
taken were in terms of establishing the required
number of personnel capacities for complying with the
construction schedule.
Ključne riječi
mean value; standard deviation; productivity; sample relative frequency; probability theory; hypothesis test
Hrčak ID:
266739
URI
Datum izdavanja:
21.3.2021.
Posjeta: 382 *