At the construction site it is difficult to take engineering
controls. Consequently, administrative controls play
important rolls to reduce the heat stress of workers. At the
subjective construction site the managers measured WBGT
for the purpose of evaluating the risk of heat stroke
16)
, and
thereby limited working hours of the workers. They gave
health education to workers and encouraged them to drink
cool water frequently. Such measures were effective to reduce
the heat stress of workers, because the effects of work in
hot environment were not remarkable in general. This report
is one of the good examples to show the effectiveness of
the measures for outdoor workers at the construction site.
We expect that some measures in this research will be applied
to other outdoor workplaces.