THE INFLUENCE OF OUTSIDE AIR TEMPERATURE ON LABOR SAFETY AND THE CONDUCTING OF TECHNOLOGICAL PROCESSES IN CONSTRUCTION

Abstract

Climate conditions, in particular the outside air temperature, affect the operation of machines and mechanisms, people's well-being and working conditions. Temperature values at which some construction works are not allowed are established by regulatory documents of Ukraine. A significant part of these restrictions concerns road construction, in particular the installation of asphalt concrete road surface. This work contains the methodology and results of determining the probable duration of the outside air temperature values, which create dangerous working conditions and limit the possibility of construction work, during each month of the year in all regions of Ukraine.

Durations of temperature restrictions on construction works are determined based on the presentation of the average daily air temperature in the form of a sequence of 12 normally distributed random values corresponding to the months of the year. According to the data of the network of 417 plain observation points of Ukraine, the probable durations of dangerous values of outside air temperature during each month of the year were calculated for 24 regions of Ukraine, Autonomous Republic of Crimea and the Southern coast of Crimea, the temperature regime of which is significantly different from other regions. The results of the calculations for each region are presented in the form of a table, which contains the outside air temperature durations during each of the months of the year, which are lower or higher than the limits set by the norms. The analysis of the obtained data indicates clearly expressed seasonal changes and significant territorial variability in the duration of restrictions on construction works. Changes in the duration of restrictions on construction work during the year correspond to the annual course of air temperature. The duration of low temperatures decreases and the duration of high air temperatures increases in the direction from the north to the south of Ukraine.

The use of the developed recommendations makes it possible to specify the planning of construction works taking into account possible downtimes due to the realization of unfavorable atmospheric air temperatures.To do so, it is necessary to increase the estimated duration of work by the estimated downtime duration specified in tables 2...5, or to determine the number of days during which it is possible to perform certain work in the selected month of the year, subtracting the duration of downtime from the number of days in the month.