Study on the effect of Ventilated Working Wear on physiological and psychological responses of construction workers – Part XVⅡ

Drinking water situation of workers and thermal environment at construction rest area

Abstract

Measured results were presented for the thermal environment of rest areas at construction sites that requires ventilation to prevent Covid-19. Construction workers drink less water than young adults and children during sports. The temperature at the rest area was lower than that at the work site, but some people took a break in the smoking area, which had the same level of thermal environment as the work site. In the subjective evaluation of the break time, workers who took a break in the smoking area felt heat stress. Construction workers had the same evaporating loss as young adults, however the amount of water intake was the same as that of the elderly, resulting in higher dehydration. Workers who wear both the ventilated working jacket and the ventilated trousers have a lower dehydration than those who wear only the ventilated working jacket. Therefore, the combined use of both can be expected to further reduce the dehydration.