Topics. 1  Flagger duties and qualifications. 2  Flagger Safety. 3  Flagging equipment. 4  Flagging procedures. 5  Typical flagger operations.
dew point-the temperature at which the water vapor in the air becomes saturated and condensation begins.temperature-the degree of hotness or coldness of a body or environment (corresponding to its molecular activity).ew point. The temperature at which air becomes saturated with water vapor and dew forms. The dew point varies depending on how much water vapor is in the air.
In simplest terms, dew fall occurs when the air temperature and the dewpoint temperature are equal. Remember, the dewpoint temperature is the temperature at which the air becomes saturated (relative humidity becomes 100%). Saturation is the point at which the air is holding all the water vapor that it can hold. On most days, the dewpoint does not change very much, while the air temperature may change 20-30 degrees.