During construction, the execution times of individual tasks are influenced by various factors. Therefore, the execution times estimated during the construction planning phase are uncertain. This paper assumes that this uncertainty is not caused by a lack of knowledge, but rather represents a range of possible execution times for a given task. A method for fuzzy modeling of construction work execution times based on uncertain data characterizing construction conditions is described. The described method utilizes fuzzy inference and the relationship between probability distribution and possibility distribution. An example of using the described method to estimate the fuzzy execution time of a construction task is also provided.During the construction of facilities, execution processes are exposed to the influence of various disruptive factors (weather conditions, late material deliveries, equipment failures, etc.). Despite planners being aware of their existence, these factors are not taken into account when estimating work execution times during the construction design phase. (…)
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Source: Logistyka Magazine
Modeling construction work execution times using fuzzy inference – PDF file for download