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IICRC Water Restoration Course
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 it - Correct Answer ✔️ ✔️ r value
cleaning procedures must be employed before the drying of a category 2 water loss can continue at minimum affected underlay must be removed and disposed of and the carpet must be thoroughly cleaned using a hot water extraction method - Correct Answer ✔️ ✔️
various cleaning and decontamination procedures must be used on Category 3 water losses including the removal of all - Correct Answer
✔️ ✔️ porous materials affected by water intrusion
mini building materials will absorb excess water vapor and suffer damage especially when the air is allowed to remain above - Correct
Answer ✔️ ✔️ 60% relative humidity
abide by local laws and regulations when disposing extracted water ways water is best disposed of into a sanitary sewer - Correct Answer
✔️ ✔️
the primary goal of the initial extraction of the affected area is to contain further - Correct Answer ✔️ ✔️ migration of water within the structure
whenever a carpet must be disengaged from the topless strip a - Correct Answer ✔️ ✔️ knee kicker and carpet all must be used
if the carpet is to be reinstalled technician should avoid cutting carpet seams unless it is absolutely - Correct Answer ✔️ ✔️ necessary
how many gallons of water are present in a basement that measures 30 x 25 where water is standing at a depth of 6 ft 9 in - Correct Answer ✔️ ✔️ 37867.
the most effective way to speed up the drying process is to remove as much of the water in the liquid state as possible during - Correct
establishing a dry standard is the best way to set restorative drying goals a dry standard is established by obtaining a moisture reading using - Correct Answer ✔️ ✔️ unaffected material
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 Power Structural Materials is measured most accurately with a moisture - Correct Answer ✔️ ✔️ moisture meter not a moisture sensor
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 - Correct Answer ✔️ ✔️ ceramic tile and vinyl floor coverings
a thermo hygrometer is used to monitor any air that can influence the - Correct Answer ✔️ ✔️ temperature and humidity within a restorative drying environment
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 vapor water is removed by - Correct Answer ✔️ ✔️ dehumidification or ventilation
as moisture evaporates from a wet material the surface of the material becomes - Correct Answer ✔️ ✔️ cooler because energy is released from the material
condensation occurs when a vapor changes to a - Correct Answer ✔️ ✔️ liquid occurs as energy is removed
sublimation occurs when a solid changes to a vapor without going through a liquid phase - Correct Answer ✔️ ✔️
freeze drying sublimation is typically used with valuable saturated books and documents books and documents saturated with clean
inspections are more consistent when the overall goals are kept in mind
- Correct Answer ✔️ ✔️ monitor daily in most circumstances how wet items are use the same meters in the same locations each day determine if wet items are drying determine it affected items are dry or done
cupping will generally be the first indication of abnormal moisture levels in hardwood flooring as the bottom and sides of the board absorb moisture - Correct Answer ✔️ ✔️ cupping in hardwood is not permanent damage and should be dried in most cases
when water intrusion results from a grossly unsanitary Source or carries
- Correct Answer ✔️ ✔️ pathogenic disease causing agents it is said to be Category 3
worker and occupant health 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 ✔️ ✔️
when resistance is encountered and Performing proper services in a category 3 water loss becomes a challenge restores - Correct Answer
✔️ ✔️ stop work immediately and prevent liability
losses where regulated or hazardous materials have contaminated the structure are considered - Correct Answer ✔️ ✔️ special situations
Third Party Experts are commonly referred to as indoor environmental professionals or IEPs - Correct Answer ✔️ ✔️
pre-existing conditions should be identified documented and communicated to all - Correct Answer ✔️ ✔️ materially interested parties during the initial inspection
when carpet delamination the loss of Integrity in the adhesives used to laminate the primary and secondary backing has occurred further damage is very likely for this reason when extensive carpet delamination is discovered ignitions must call it to the attention of all
relative humidity is defined as the amount of moisture contained in the air as compared to - Correct Answer ✔️ ✔️ the maximum amount the air could hold that temperature
in the restorative drying industry the weight measurement used to measure water vapor in air is - Correct Answer ✔️ ✔️ grains per pound of air abbreviated as gpp
what is gpp called - Correct Answer ✔️ ✔️ the humidity ratio
what is the dew point - Correct Answer ✔️ ✔️ the temperature at which air becomes saturated with moisture Vapor or can hold no more water vapor
when air is cooled its capacity for water is reduced eventually if temperature is cooled enough the relative humidity will reach - Correct Answer ✔️ ✔️ 100% or saturation when this occurs the air has reached its dew point temperature
if surfaces are cooler than the dew point of the surrounding air water will condense on those surfaces and possibly cause secondary damage if surfaces are warmer than the dew point of the surrounding air evaporation can occur - Correct Answer ✔️ ✔️
what is vapor pressure - Correct Answer ✔️ ✔️ the force exerted by a liquid or gas on the surrounding environment
the greater the weight of water vapor the greater the water pressure there for vapor pressure dewpoint and humidity ratio are - Correct
Answer ✔️ ✔️ directly related to each other
is open drying is heaterman appropriate the following options will keeping building Security in mind are available to the restore - Correct
Answer ✔️ ✔️ ventilation fans open windows air Movers
what is combination drying - Correct Answer ✔️ ✔️ drying systems merge the benefits of both open and closed drying the use of
plywood - Correct Answer ✔️ ✔️ represents the was wood material with the least engineering and that's the most natural fiber bonding it is resistant to swelling and denomination due to its wood veneer assemblies which are glued under extreme pressure
wet particle board would normally be - Correct Answer ✔️ ✔️ removed and replaced
Plasticity plastic laminate flooring is made of - Correct Answer ✔️ ✔️ MDF and has a resin saturated appearance layer normally removed in water restoration due to its construction and installation components
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 discarded - Correct Answer ✔️ ✔️
turn the drying process jip rocks original strength is restored in fact it will normally be slightly stronger than before wetting - Correct
Answer ✔️ ✔️
specific types of secondary damage associate with contents are typically - Correct Answer ✔️ ✔️ swelling staining color transfer delamination of surface finish material
in structures where the surface on the wall is covered with a non- permeable surface it may be necessary to remove base molding drill holes and introduce air movement - Correct Answer ✔️ ✔️
air flow in the wall cavity increases the rate of evaporation and allows the wall to drive from both inside and out - Correct Answer ✔️ ✔️
remove the vinyl flooring and discard it is underlayment is saturated and or damaged vinyl is a vapor barrier and time required to dry underlayment will be dramatically reduced if the vinyl is removed - Correct Answer ✔️ ✔️
and is held is bound water commonly includes hardwood plaster brick deeply saturated concrete deeply saturated ground soil and Stone
dehumidification - Correct Answer ✔️ ✔️ reduces the moisture content of the air
a balance drying system is achieved when the rate of the vacation 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 - Correct Answer ✔️ ✔️ secondary damage can occur
Refrigerant vapors or mist should not be inhaled because - Correct
Answer ✔️ ✔️ condensation because of this fact they are more efficient and higher humidity conditions refrigerant dehumidifiers work best between 70 degrees and 90 degrees Fahrenheit
air filtration devices are needed in water restoration work whenever high levels - Correct Answer ✔️ ✔️ particulates are being added to the air
conventional refrigerant dehumidifiers under normal temperatures are effective in reducing high humidity to a normal level approximately 40% RH or about 55 gpp - Correct Answer ✔️ ✔️
LGR will continue to remove significant water vapor down 34 gpp - Correct Answer ✔️ ✔️
because desiccant dehumidifiers do not use condensation to remove water they are not limited by the low dew point temperatures therefore they produce the lowest vapor pressure of any dehumidifier - Correct Answer ✔️ ✔️
when's the next been determined that the floor can be salvaged by in place drying the first step is to determine a dry standard for the hardwood and subfloor - Correct Answer ✔️ ✔️
the best way to prevent odors and retard microbial growth in a wet structure is to ensure that all materials are dried thoroughly and rapidly
as mold grows it can produce a toxic chemical substance all mold rated toxins are referred to as - Correct Answer ✔️ ✔️ mycotoxins
when the presence of mold is suspected it is important to communicate with all parties and use appropriate - Correct Answer ✔️ ✔️
protective measures
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 and contaminate the entire area - Correct Answer ✔️ ✔️
dry rot wood rot can occur when wood is visibly dry it wetter than 20% moisture content - Correct Answer ✔️ ✔️
sanitizer - Correct Answer ✔️ ✔️ cleaning treatment designed to reduce the number of pathogenic microorganisms to a safe level this is the lowest level of biocidal activity
disinfectant - Correct Answer ✔️ ✔️ a product designed to destroy or inactivate microorganisms but not necessarily their spores
sterilizer - Correct Answer ✔️ ✔️ product designed to destroy or eliminate all forms of microorganisms fungi bacteria and viruses Etc and their spores
the Forno's of drying - Correct Answer ✔️ ✔️ what's wet how wet is it is it drying is it done
moisture content - Correct Answer ✔️ ✔️ moisture content is the amount weight of moisture in a material compared to its oven-dried weight expressed as a percentage
what is the most critical course of action in restorative drying - Correct
Answer ✔️ ✔️ to respond quickly
