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.
CONDENSATION: DEW, FOG AND CLOUDS. At night, the surface and the air near the surface cools radiatively. Air that comes in contact with the cold surface cools by conduction. If the air and the surface cools to the dew point, the temperature at which saturation occurs, dew forms. If the air temperature drops below freezing, the dew will freeze becoming frozen dew. If the dew point is less that 0C, then we refer to it as the frost point, and frost forms by deposition.