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Disaster Advice Glossary
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Disaster recovery and restoration can be veiled in mystery to the many who have not undertaken specific training. This glossary explains technical terms to assist both report writing and the understanding of those technical terms so often misunderstood.
Definition
| Absolute Humidity: |
Total water vapour in unit or mass. Absolute humidity is usually is expressed in grams of water per kilogram of air. Education Note: For an easier rule, grains of moisture (Grains per pound = GPP) can be calculated instead of using grams per kilogram. See Grains of Moisture, Psychometrics, Relative Humidity |
| Humidity: |
The measurement of moisture and moisture-vapor in air. See Absolute Humidity, Ambient Humidity, Relative Humidity |
| Humidity, Absolute: |
The total amount of water vapor present in a system compared to the total volume of air. Absolute humidity is usually expressed as grams per cubic meter (g/m3), but it could also be expressed as grains per cubic foot. |
| Relative Humidity: |
The ratio of the quantity of water vapour present in a room or building atmosphere, to hold and retain the water vapour, measured against the quantity of water vapour that would saturate it at any specific temperature. Restorative Drying Note: In wet-water damaged buildings, if its relative humidity is 75% in the surrounding air, the air contains 3 quarters of the total amount of water vapour which it is capable of holding, at a temperature and atmosphere pressure in the room at the time of the measurement. Change in temperature and pressure will change the relative humidity. See Absolute Humidity, Ambient Humidity, Condensation, Dew Point, Drying Conditions, Evaporation, Grains of Moisture, Psychometrics |
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The Disaster Advice Glossary operates on TechMerit Technoloy.
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