What does RH mean in CONSTRUCTION

Humidity is the amount of moisture or water vapor present in the air. Q2: How does relative humidity differ from absolute humidity? A2: Relative humidity describes how much water vapor is in the air compared to how much water vapor the air can hold at a given temperature while absolute humidity describes how much water vapor is actually present in a particular volume of air.

Several factors influence relative humidity, including temperature, wind speed, pressure, and precipitation. As temperature increases, the amount of moisture that can be held by air also increases, thus decreasing relative humidity levels. Conversely, as temperatures increase then decrease more quickly due to less direct sunshine on certain days, it causes condensation - increasing relative humidity levels. Q4: What effect does high/low relative humidity have on us and the environment? A4: High relative humidities create uncomfortable environments with increased risk for bacteria and mold growth. Low relative humidities cause dry skin and dust particles to remain airborne longer as well as increase fire risk since there's not enough moisture in the air to dampen any sparks or flames that may arise. It also has an effect on our plants since they rely on proper water levels to thrive; if their surrounding environment has too little or too much moisture they might suffer poor health or even die off prematurely.

A hygrometer is used for measuring RH; it measures both ambient temperature and water vapor content of the atmosphere around it in order to calculate a single number — this number (a percentage between 0-100) is then used to measure atmospheric conditions in terms of RH.