Download IICRC WRT Exam Actual Exam Questions and Answers | 350 Questions | Already Passed and more Exams Water Resources Planning and Management in PDF only on Docsity!
IICRC WRT Exam Actual Exam
Questions and Answers | 350
Questions | Already Passed |
Graded A+
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. ----
- CORRECT ANSWER------------meter Because of their non-invasive nature and quick surveying capabilities, non-invasive meters are the most effective tools for locating abnormal moisture behind and beneath finishing materials such as ______ and resilient ____ floor coverings. -----CORRECT ANSWER------------ceramic tile , vinyl A thermo hygrometer is used to monitor any air that can influence the ________ and or ______ within a restorative drying environment. -----CORRECT ANSWER------------ temperature , humidity (relative humidity) The ultimate goal is to find the edge of water migration which moves in a three dimensional path throughout the structure. this is accomplished across carpeted surfaces using a _____ and across most hard surfaces using a _____ (non-penetrating) moisture meter. -----CORRECT ANSWER------------moisture sensor , non-invasive The most critical course of action in restoration during is to _______ an begin __________ as soon as possible -----CORRECT ANSWER------------respond quickly & mitigation
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
- fit testing
- training The contract clearly states the agreement between the building owner and the restoration contractor. the form specifies who is responsible for payment and should be signed _________ work begins -----CORRECT ANSWER------------before The technicians first responsibility when arriving at a water damage site is to identify communicate and eliminate _________ if reasonably possible -----CORRECT ANSWER------------safety hazards Federal regulations apply to handling or disturbing of ____ based paint and asbestos --- --CORRECT ANSWER------------lead Water from a clean source with no substantial risk of causing sickness or discomfort is said to be -----CORRECT ANSWER------------category 1 Water that has significant degree of chemical biological and or physical contamination and potential to cause sickness or discomfort is ___________ -----CORRECT ANSWER------------category 2 Cleaning procedures must be employed before the drying of a category 2 water loss can continue. at a minimum affected __________ must be removed and disposed of and carpet must be throughly cleaned using a hot water extraction method. ----- CORRECT ANSWER------------carpet underlay
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-----------
- carpet stretching If carpet is to be re-installed, technicians should avoid cutting carpet seams unless it is absolutely -----CORRECT ANSWER------------necessary
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.
- disinfectant: designed to destroy or inactivate microorganisms but not necessarily their spores
- Sterilizer: a product designed to destroy or eliminate all forms of microorganisms (fungi, bacteria, viruses) and their spores. whenever a chemical antimicrobial or biocide is used restorers must follow the label ____ explicitly -----CORRECT ANSWER------------directions most antimicrobials require that the area of application be vacated by ______ and pets during application and or a period of time after application. -----CORRECT ANSWER----- -------occupants
- The label is the law" get customer briefing before starting any antimicrobial / biocide treatment. -----CORRECT ANSWER------------ establishing _______ is the best way to set restorative dying goals. A dry standard is established by obtaining a moisture reading using an ____ material -----CORRECT ANSWER------------dry standard , unaffected to evaluate the progress of structural drying projects, restorers should measure: moisture in ____ being dried (moisture content readings ) __ being used to dry affected materials (psychrometric readings) __produced by mechanical systems (dehumidifiers) -----CORRECT ANSWER------------ materials
______ 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
- which of the two conditions has the lowest vapor pressure? 53 F at 80% RH = 48 GPP *what is the surface temperature at which condensation would become a risk for air which is 80 F at 60% 102 F (dew point) what is the temperature in degrees F if the humidity ratio is 70 GPP and the relative humidity is 60% -----CORRECT ANSWER------------72 F
____ 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-----------
- moisture A balanced drying system is achieved when the rate of dehumidification is greater than or equal to the rate of ___________. -----CORRECT ANSWER------------evaporation If the rate of evaporation is allowed to exceed the rate of dehumidification, _________ ______ can occur. -----CORRECT ANSWER------------secondary damage Refrigerant dehumidifiers remove water from the air through the process of ____ because of this fact, they are more efficient in higher humidity conditions. refrigerants
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
- monitor daily in most circumstances
- use the same meters in the same locations each day b) determine if wet items are drying c)determine if affected items are dry (done) Restorers will know the drying job is dry and done when moisture meters verify that the structure has reached the ______ _____. -----CORRECT ANSWER------------drying goal moisture documentation of restoration work should include each of the following components -----CORRECT ANSWER------------a)record of moisture content (RMC) b) moisture map-a diagram or sketch indicating the boundaries and moisture levels of the affected are. c)record of drying conditions (RDC) or daily humidity record. the wood is considered dry when -----CORRECT ANSWER------------a) solid hardwood is within 2-4 percentage points of normal equilibrium moisture content (dry standard) b) subsurfaces below hardwood are dried to within 2-4 percentage points of the hardwood c) after wood flooring has been dried to acceptable moisture content, appropriate **acclimation time should be allowed before refinishing the best way to prevent odors and retard microbial growth in a wet structure is to ensure that all materials are dried ______ and ______ -----CORRECT ANSWER------------ throughly and rapidly
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
- ________ -----CORRECT ANSWER-----------medical eval
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----------
- pathogenic Worker and occupant ________ and safety are the first priority on every sewage loss. Areas affected by Category 3 water intrusion are marked and posted as potentially hazardous -----CORRECT ANSWER-----------Health When resistance is encountered and performing proper services in a category 3 water loss become a challenge, restorers ________ ________ immediately and prevent liability -----CORRECT ANSWER-----------Stop Work Third party experts are commonly referred to as Indoor Environmental Professionals, or ________ -----CORRECT ANSWER-----------IEPs Losses where regulated or hazardous materials have contaminated the structure do no change the ________ of water -----CORRECT ANSWER-----------Category Pre-existing conditions should be identified, documented and communicated to all ________ ________ parties during the initial inspection -----CORRECT ANSWER-------- ---Materially interested When carpet delamination (the loss of integrity in the adhesives used to laminate the ________ and ________ backing) has occurred, further damage is very likely. For this reason, when extensive carpet delamination is discovered, technicians must call it to the attention of all materially interested parties, document the condition and suggest ________ -----CORRECT ANSWER-----------Primary Secondary Replacement There are a number of causes for carpet delamination - many of them related to ________ restoration activities -----CORRECT ANSWER-----------Improper
Typical causes of carpet delamination are:
- ________ -----CORRECT ANSWER-----------1. Folding or Stretching when wet
- Overly aggressive extraction
- Improper removal of tack strip 4.Improper floating of carpet 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 Secondary Cleaning procedures must be employed before the drying of a category 2 water loss can continue. At a minimum, affected ________ must be removed and disposed of, and carpet must be thoroughly cleaned using a hot water extraction method -----CORRECT ANSWER-----------underlay Various cleaning and decontamination procedures must be used on category 3 water losses, including the removal of all ________ ________ materials affected by the water intrusion -----CORRECT ANSWER-----------highly porous many building materials will absorb excess water vapor and suffer damage, especially when air is allowed to remain above ________% relative humidity -----CORRECT ANSWER-----------60% 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 ares 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
Establishing a ________ ________ is the best way to set restorative drying goals. A dry standard is established by obtaining a moisture reading using an ________ material ----
- CORRECT ANSWER-----------Dry standard unaffected The numerical value from a moisture meter can be documented and used to monitor progress. For this reason, the amount of moisture absorbed by semi-porous structural materials is measured most accurately with a moisture ________ -----CORRECT ANSWER-----------meter (invasive) 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 ________ -----CORRECT ANSWER-----------R-value Because of their non-invasive nature and quick surveying capabilities, non-invasive meters are the most effective tools for locating abnormal moisture behind and beneath finishing materials such as ________ ________ and resilient ________ floor coverings - ----CORRECT ANSWER-----------ceramic tiles vinyl To evaluate the progress of structural drying projects, restorers should measure:
- moisture in ________ being dried (moisture content readings)
- ________ being used to dry affected materials (psychrometric readings)
- ________ and ________ produced by mechanical systems (dehus) -----CORRECT ANSWER-----------Materials Air Temperature and Humidity A thermo-hygrometer is used to monitor any air that can influence the ________ and/or ________ within a restorative drying environment -----CORRECT ANSWER----------- Temperature Humidity After physically removing excess water, the time required to dry wet materials is influenced most by the ________ -----CORRECT ANSWER-----------Rate of Evaporation As the water is rapidly evaporated, the water vapor is removed by ________ or ________ -----CORRECT ANSWER-----------Dehumidification or Ventilation
________ 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
- ________ -----CORRECT ANSWER-----------Wet materials are made warmer when drier air is used when air is moved more rapidly across the wet surface If a material is not drying well, the most effective method of increasing evaporation is to ________ -----CORRECT ANSWER-----------Warm the material One of the most effective methods of drying wet wood under hard surfaces is ________ -----CORRECT ANSWER-----------Heated airflow
