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IICRC WRT Exam Actual Exam Questions and Answers | 350 Questions | Already Passed | Graded A+
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After safety concerns have been addressed and the initial water source has been stopped, the restorer must complete an evaluation of the water's migration through the structure. During this process, the restorer inspects all ___________ ________ areas. - ----CORRECT ANSWER------------potentially affected The numerical value from a moisture meter can be documented and used to monitor progress, for this reason, the amount of moisture absorbed by semiporus structural materials is measured most accurately with a moisture ______ not a moister sensor. ----
All restorers should follow the standard of care for the water restoration profession developed by the restoration industry entitled the IICRC ____. -----CORRECT ANSWER------------s To help protect technicians from the many hazards associated with contaminated water losses restorers need to have ready access to several items. these items protect for all _________________ to the body. -----CORRECT ANSWER------------potential exposures Respiratory protection regulations state that the employer must provide -----CORRECT ANSWER------------1. medical evaluations
Many building materials will absorb excess water vapor and suffer damage, especially when air is allowed to remain above __% relative humidity. -----CORRECT ANSWER---- --------60% Hygroscopic materials gain and lose moisture continually in an effort to ________ with the water content in the surrounding air mass. The more hygroscopic the material, the faster it will collect water vapor, and the easier it will suffer _________ damage. ----- CORRECT ANSWER------------equalize and secondary When water intrusion results in water running through wall cavities, inspection access holes are used to ensure that blown-in insulation has not compacted and lost its ______. Wet compressed insulation should be ______ -----CORRECT ANSWER--------- ---R-Value , removed The most effective way to speed the drying process is to remove as much of the water in a liquid state as possible during the _____ phase (for example multiple extractions.) poor extractions will significant slow the drying process. -----CORRECT ANSWER-------- ----extractions Abide by local ____ and regulations when disposing extracted water. Waste water is best disposed of into a sanitary sewer. -----CORRECT ANSWER------------laws The primary goal of the initial extraction of the affected area is to contain further ______ of the water within the structure. -----CORRECT ANSWER------------migration Whenever carpet must be disengaged from the tackless strip, a ____ ______ and carpet awl must be used. -----CORRECT ANSWER------------knee kicker The majority of cushion has a skin or mesh on the top side. the purpose of this skin is to ease_____ during installation: it is not a vapor barrier -----CORRECT ANSWER-----------
How many gallons of water are presenting a basement that measures 30' x 25' where water is standing at a depth of 6'9" -----CORRECT ANSWER------------30'x25'x6.75' (9"/12") = 5062.5 cuft x 7.48= 37,867. every cubic foot of standing water present in a structure contains ___ gallons (28. liters) and each gallon (3.8 liters) of water wights 8.34pounds (3.8 kg) -----CORRECT ANSWER------------7. there are 3 levels of biocidal activity, according to the environmental protection agency EPA( provide starting with weakest) -----CORRECT ANSWER------------1. sanitizer: cleaning treatment designed to reduce # of pathogenic microorganisms to a safe level.
______ is defined as the amount of moisture contained in an air sample as compared to the maximum amount the air could hold at the temperature. -----CORRECT ANSWER--- ---------relative humidity when the air temperature increases , it can hold ____ water vapor -----CORRECT ANSWER------------more In the restorative drying industry the weight measurement used to measure water vapor in air is grains per pound of air, abbreviated as GPP. This is called -----CORRECT ANSWER------------humidity ratio which of these surface temperatures would prompt the most rapid evaporations? 60 degrees 70 degrees 80 degrees -----CORRECT ANSWER------------ 80 if a material is not drying well what would be the most effective method of increasing evaporation? -----CORRECT ANSWER------------warm the material one of the most effective methods of drying wet wood under hard surfaces is ----- CORRECT ANSWER------------heated airflow. Use of Psychometrics chart to complete the following calculation 80 F at 60% RH 53 F at 80% RH - ----CORRECT ANSWER------------91 GPP 48 GPP
____ is the temperature at which air becomes saturated with moisture and can hold no more water vapor -----CORRECT ANSWER------------dew point when air is cooled its capacity for water vapor is reduced, eventually If temperature is cooled enough, the relative humidity will reach ____% or saturation. when this occurs the air has reached its ___ point temperature. -----CORRECT ANSWER------------100% dew point if surfaces are _____ then the dew point of the surrounding air, water will condense on those surfaces and possibly cause secondary damage. if surfaces are _____ then the dew point of the surrounding air, evaporation can occur. -----CORRECT ANSWER-------- ----cooler warmer ______is the force exerted by a gas (vapor molecules) on the surrounding environment. -----CORRECT ANSWER------------vapor pressure vapor pressure, dew point, and humidity ratio (GPP) are directly related to each other. when one increases the other two _____. when one decreases the other two ______. -- ---CORRECT ANSWER------------increase decrease water vapor pressure is the force that drives higher convention of humidity from one space to another in an attempt to seek ____ with lower concentration of water vapor. --- --CORRECT ANSWER------------equilibrium the ability for water vapor to diffuse through a solid material is expressed as the materials _____ -----CORRECT ANSWER------------permeance drying systems (provide name and brief descriptions of each) -----CORRECT ANSWER- -----------open: intentional using outdoor air closed: using mechanical dehumidification only combination: using outdoor air combo with mechanical dehumidification
class 2 water intrusions involve a _____ amount of water absorption, with more than ___ but less than ___ of are surface being wet porous materials -----CORRECT ANSWER------------significant 5%-40% Class 3 water intrusion involve the ___ amount of water absorption with more than ___% of area surface being wet porous materials. -----CORRECT ANSWER------------ greatest 40% wet material present in a class 4 water intrusion require a ___ time to dry. Water has saturated deeply into the materials and is held or trapped as bound water. low evaporation material have ____ absorption of water. -----CORRECT ANSWER------------ longer significant restorers must maintain their safety certified equipment properly. this includes, replacing ___ that are damaged, replacing damaged inlet and outlet ___ and checking for ___ electrical plugs. -----CORRECT ANSWER------------cords screens grounded Install _ air mover for each ________ area before you calculate additional air movers for the square feet of surfaces and for room offsets. -----CORRECT ANSWER------------ 1 affected dehumidification reduces the _____ content of the air -----CORRECT ANSWER-----------
dehumidifiers work best between 70 Degrees and 90 degrees F -----CORRECT ANSWER------------condensation LGRs produce lower ______ than conventional refrigerants and continue to remove significant water vapor down to ___GPP -----CORRECT ANSWER------------vapor pressure 34 GPP Because desiccant dehumidifiers do not use condensation to remove water, they are not limited by low dew point temperatures; therefore, they produce the lowest _____ ________ of any dehumidifier. -----CORRECT ANSWER------------vapor pressure if a structure had affected air at 85 F at 65% RH the most efficient type of dehumidification to use would be a _______ -----CORRECT ANSWER------------ refrigerant if a structure had affected air at 75 F at 25% RH the most efficient type of air dehumidifier to use would be ____ -----CORRECT ANSWER------------desiccant if a structure cannnot be warmed to a temperature where LGRs would be effective the most efficient type of dehumidifiers to use would be:____ -----CORRECT ANSWER------ ------desiccant air filtration device (AFDs) are needed in water restoration work whenever high levels of ____ are being added to the air -----CORRECT ANSWER------------particulates to determine how many dehumidifiers to place : determine the ____ feet (meters) affected or volume of air to be dehumidified by multiplying the area's length x width x height -----CORRECT ANSWER------------cubic note the dehumidifier rating (Association of home appliance manufacturers or AHAM rating) of the refrigerant/LGR dehumidifier being used or the process out CFM of the desiccant dehumidifier being used. Dehumidifiers AHAM ratings are measured in pins of water removed at 80 F, 60% RH for 24 hours. -----CORRECT ANSWER------------
Airflow in the wall cavity increases the rate of ___________ and allows the wall to dry from both inside and out. -----CORRECT ANSWER------------evaporation when ceilings are affected, drying procedures are similar to wall drying. if the ceiling is sagging or otherwise damaged, wet drywall is drained, removed, and _____. removal should be done ____drying procedures begin or continue. -----CORRECT ANSWER----- -------discarded removed inspections are more consistent when the overall goals are kept in mind -----CORRECT ANSWER------------a) determine hoe wet items are
when the presence of mold is suspected it is important to communicate with all parties and use appropriate_____ measures. -----CORRECT ANSWER------------protective as with any contaminant mold should be removed or contained before any air movers are placed in the structure. blowing air can spread mold spores from the ______ area to the _____ rooms -----CORRECT ANSWER------------contaminated , unaffected Dry rot (wood rot) can occur when wood is visibly dry yet wetter than __% moisture content. -----CORRECT ANSWER------------ 20 restorers must use a third party (IEP) in situations that involve severe public health issues, ______ occupants living or working in the structure or extensive _____ contamination that can affect worker or occupant health -----CORRECT ANSWER-------- ----high risk microbial 1 cubic foot of water contains ______ gallons -----CORRECT ANSWER-----------7. one gallon of water weighs _______ pounds -----CORRECT ANSWER-----------8. The most critical course of action in restorative drying is to _____ ______ ----- CORRECT ANSWER-----------Respond Quickly All restorers should follow the standard of care for the water restoration profession developed by the restoration industry entitled the IICRC ________ -----CORRECT ANSWER-----------S To help protect technicians from the many hazards associated with contaminated water losses, restorers need to have ready access to several items. These items protect for all ________ ________ to the body -----CORRECT ANSWER-----------potential exposures Respiratory protection regulations state that the employer must provide
Water that has a significant degree of chemical, biological, and/or physical contamination and potential to cause sickness or discomfort is ________ ________ water -----CORRECT ANSWER-----------Category two When water intrusion results from a grossly unsanitary source or carries ________ (disease causing) agents, it is said to be a Category 3 -----CORRECT ANSWER----------
Typical causes of carpet delamination are:
Establishing a ________ ________ is the best way to set restorative drying goals. A dry standard is established by obtaining a moisture reading using an ________ material ----
________ occurs when liquid changes to a vapor. Occurs as energy is increased ----- CORRECT ANSWER-----------Evaporation As moisture evaporates from a wet material, the surface of the material becomes ________ because energy is released from the material -----CORRECT ANSWER-------- ---Cooler ________ occurs when vapor changes to a liquid. Occurs as energy is removed ----- CORRECT ANSWER-----------Condensation ________ occurs when a solid changes to a vapor (without going through a liquid phase). -----CORRECT ANSWER-----------Sublimation Freeze drying (sublimation) is typically used with valuable saturated books and documents. Books and documents saturated with clean water may be restorable if: ________ or ________ as quickly as possible -----CORRECT ANSWER-----------Frozen or Dried When the air temperature increases, it can hold ________ water vapor -----CORRECT ANSWER-----------More Evaporation will increase when