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  2. Moisture vapor transmission rate - Wikipedia

    en.wikipedia.org/wiki/Moisture_vapor...

    The building materials industry also manages the moisture barrier properties in architectural components to ensure the correct moisture levels in the internal spaces of buildings. Optoelectronic devices based on organic material, generally named OLEDs , need an encapsulation with low values of WVTR to guarantee the same performances over the ...

  3. Damp (structural) - Wikipedia

    en.wikipedia.org/wiki/Damp_(structural)

    Moisture condenses on the interiors of buildings due to specific interactions between the roof and wall. Leaks most commonly occur on flat-roofed buildings. [ 4 ] : 328 Certain building materials and mechanisms can be used to prevent condensation from occurring in these areas, therefore reducing structural dampness and potential mold infestation.

  4. Condensation - Wikipedia

    en.wikipedia.org/wiki/Condensation

    Condensation in building construction is an unwanted phenomenon as it may cause dampness, mold health issues, wood rot, corrosion, weakening of mortar and masonry walls, and energy penalties due to increased heat transfer. To alleviate these issues, the indoor air humidity needs to be lowered, or air ventilation in the building needs to be ...

  5. Hygroscopy - Wikipedia

    en.wikipedia.org/wiki/Hygroscopy

    Differences in hygroscopy can be observed in plastic-laminated paperback book covers—often, in a suddenly moist environment, the book cover will curl away from the rest of the book. The unlaminated side of the cover absorbs more moisture than the laminated side and increases in area, causing a stress that curls the cover toward the laminated ...

  6. Damp proofing - Wikipedia

    en.wikipedia.org/wiki/Damp_proofing

    Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. Dampness problems are among the most frequent problems encountered in residences. DPC visible between concrete foundation and brickwork.

  7. Mass wasting - Wikipedia

    en.wikipedia.org/wiki/Mass_wasting

    A landslide, also called a landslip, [10] is a relatively rapid movement of a large mass of earth and rocks down a hill or a mountainside. Landslides can be further classified by the importance of water in the mass wasting process. In a narrow sense, landslides are rapid movement of large amounts of relatively dry debris down moderate to steep ...

  8. Evapotranspiration - Wikipedia

    en.wikipedia.org/wiki/Evapotranspiration

    Potential evapotranspiration is expressed in terms of a depth of water or soil moisture percentage. If the actual evapotranspiration is considered the net result of atmospheric demand for moisture from a surface and the ability of the surface to supply moisture, then PET is a measure of the demand side (also called evaporative demand).

  9. Monsoon trough - Wikipedia

    en.wikipedia.org/wiki/Monsoon_trough

    Since the monsoon trough is an area of convergence in the wind pattern, and an elongated area of low pressure at the surface, the trough focuses low level moisture and is defined by one or more elongated bands of thunderstorms when viewing satellite imagery. Its abrupt movement to the north between May and June is coincident with the beginning ...