Structural Drying >> Ceilling Leak From Rain

GLOSSARY OF USEFUL TERMS Affected air the space within in a room or building which is influenced by or can influence the moisture content level of material inside that room or building. AHAM (Association of Home Appliance Manufacturers) an industry association which publishes test results for water removal performance Ceilling Leak From Rain of dehumidifiers manufactured in the United States. 

Performance is tested in an environment at 80*F and 60% RH for 24 hours.Bound water water absorbed and chemically held within a material; Ceilling Leak From Rain in wood it is water absorbed into the wall structure of cells. Category of Water the degree of which water is contaminated - category 1 water is from a sanitary source, category 2 water is from a source containing a significant degree of contamination.

Category 3 water is water from a grossly contaminated source; Ceilling Leak From Rain category 1 or 2 water can deteriorate if left in building material for a period of time. CFM (cubic feet per minute) a unit of measurement for the volume of airflow which is used to determine the amount of air exchanged during a period time. Condensation the process which water vapor forms into a liquid on surfaces when moist air is in contact with cooler surfaces. 

Conventional refrigerant dehumidifier a drying equipment unit which employs air movement over a cold surface that forces the condensation of water vapor; Ceilling Leak From Rain the dried air is then heated and circulated into the affected air to collect more moisture. Conventional refrigerant units can remove water vapor from air down to 55 GPP. 

Dehumidification the process which removes moisture from air. Desiccant dehumidifier Ceilling Leak From Rain  a drying equipment unit which employs air movement through a moisture absorbing medium which to pull moisture from air. Desiccant units can remove water vapor from air down to zero GPP. 

Dew point (DP) the temperature which air becomes saturated Ceilling Leak From Rain and water vapor condenses to a liquid.Dry Goal the target moisture level for affected materials which require drying.Dry Standard the moisture content level of unaffected materials or known dry materials in an affected building, which are used to establish a drying goal for affected material which require drying.

Drying chamber an area enclosed or created for the purpose of promoting effective drying. Equilibrium moisture content (EMC)  the condition of a material at which it is stabilized due to the existing moisture content of the affected air; Ceilling Leak From Rain the condition at which moisture in a material neither increases nor decreases. 

Evaporation  the process Ceilling Leak From Rain which changes liquid water to a gas (water vapor). Free water absorbed water located within the open spaces of pores of a material. Grains per pound (GPP) a unit of measurement of the amount of water vapor in one pound of air (humidity ratio). 

Institute of Inspection, Cleaning, and Restoration Certification (IICRC) - The IICRC is a certification and standard-setting non-profit organization for the inspection, cleaning and restoration industries, Ceilling Leak From Rain which publishes the "S500 - Standard and Reference Guide for Professional Water Damage Restoration" an ANSI approved procedural standard used by the water restorative industry.

Low grain refrigerant (LGR) dehumidifier a drying equipment unit which employs air movement over a cold surface and a pre-cooling device, which forces the condensation of water vapor to a greater degree of efficiency in drier air conditions, Ceilling Leak From Rain compared to a conventional or standard dehumidifier. 

LGR units can remove water vapor from air down to 34 GPP. Moisture content (MC) the percentage or weight of moisture in a material compared to the weight of that material when completely dry. Moisture map a floor plan sketched of the affected area with the locations of moisture readings of affected and unaffected building material, Ceilling Leak From Rain recorded at least daily over the course of a drying project.

Negative air pressure condition created by removing the air from the affected area which to create infiltration, Ceilling Leak From Rain the process which draws in outside air into the affected area.Permeability the rate of which moisture passes through a material. Porosity the degree of which a material is porous or contains pores, openings or holes. 

Preservative a compound applied to the surface of salvageable material to suppress the growth of fungus, mold, and or mildew, Ceilling Leak From Rain or to prevent the infestation of wood-boring insects. Psychrometric chart a graph diagram showing the relationship between temperature, relative humidity, grains per pound, dew point and vapor pressure. 

Relative Humidity (RH) the percent of moisture in the air by volume at a specific temperature. Secondary damage the unwanted and irreversible change to an unaffected area of a building or to unaffected material, from the effects of excessive moisture, dehumidification, air movement, Ceilling Leak From Rain or heat.

Standard of care the practice recognized by industry which is most common to reasonable and prudent members of that trade that demonstrates being qualified Ceilling Leak From Rain and competent. Standard refrigerant dehumidifier see conventional refrigerant dehumidifier Surface water moisture found on the outermost layer of a material. 

Vapor pressure the force exerted by a gas (water vapor) onto its surrounding environment. EXAMPLE CLAIM USING METHOD (2)x Single floor on concrete slab; affected area is 50 x 40 x Flood water in the building for 24 hours, interior water 24 inches x Professional drying started on the 5th day after building tear-out, cleaning Ceilling Leak From Rain and sanitizing against mold and mildew; there is no drying log x 

Insurance estimate will include the removal and replacement of perimeter and interior wall coverings are removed to 4 foot level; all wall studs and exterior sheathing are exposed x Assume drying scenario "C" DURATION Drying started within 5 days after tear-out, Ceilling Leak From Rain cleaning and sanitizing allow 2 days for drying bound water 

AIR MOVERS For two day duration, day 2 50% of the # of airmovers for Day 1 Day 1 2000 135 SF = 15 Day 2 8 Day 3 0 Total 23 (average 12.5 per day or 1 per 174/sf) DEHUMIDIFIER (LGR) - 2000 SF X 8 foot ceilings 50 factor = 320 pint per day (ppd) needed Ceilling Leak From Rain Standard size 70 X 3 = 210 ppd for 2 days Large size 130 X 1 = 130 ppd for 2 days Total 340 ppd 

EXAMPLE DEHUMIDIFIER SIZES AND CAPACITY RATING LGR STANDARD SIZE 70 PPD LARGE SIZE 130 PPD EXTRA-LARGE SIZE 170 PPD DESSICANT STANDARD SIZE 385 CUBIC FEET PER MINUTE (CFM) or (116 PPD) LARGE SIZE 900 CFM (344 PPD) STANDARD TRAILER MOUNTED 1800 CFM (1000 PPD) LARGE TRAILER MOUNTED 4800 CFM (3032 PPD)

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