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IICRC인증 WRT시험은 IT인증시험중 가장 인기있는 시험입니다. IICRC인증 WRT시험패스는 모든 IT인사들의 로망입니다. Itexamdump의 완벽한 IICRC인증 WRT덤프로 시험준비하여 고득점으로 자격증을 따보세요.
| Section | Objectives |
|---|---|
| Water Damage Assessment | - Moisture detection and monitoring - Inspection and documentation procedures |
| Health, Safety, and Compliance | - PPE and safety procedures - OSHA and industry standards |
| Drying Techniques and Equipment | - Air movers, dehumidifiers, and extraction equipment - Structural drying strategies |
| Drying Science and Psychrometrics | - Moisture removal principles - Psychrometric relationships and humidity control |
| Water Damage Restoration Principles | - Contamination levels and safety considerations - Categories and classes of water damage |
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질문 # 27
Which tool should be used to measure the moisture content of building materials?
정답：D
설명：
The IICRC WRT body of knowledge identifies themoisture meteras the primary instrument used to measure moisture content or moisture level in building materials. Moisture meters-either penetrating or non- penetrating-provide quantitative or comparative data necessary to establish drying goals and verify drying progress.
Thermo-hygrometers measure air conditions, thermal cameras identify temperature anomalies, and moisture sensors are typically qualitative indicators. Only moisture meters are designed to measure moisture within materials accurately and repeatably.
The WRT manual emphasizes selecting the appropriate meter type for the material being tested and documenting readings consistently. Proper moisture measurement is essential for defensible drying documentation and confirmation of project completion.
질문 # 28
As the air temperature increases and no additional moisture is added to the air, what happens to relative humidity?
정답：C
설명：
The IICRC WRT body of knowledge explains thatrelative humidity decreaseswhen air temperature increases and no additional moisture is added. This occurs because warmer air can hold more water vapor; therefore, the same amount of moisture represents a smaller percentage of the air's total capacity.
This principle is foundational in psychrometry and directly applied in restoration drying. By increasing temperature while controlling moisture content, restorers lower relative humidity and vapor pressure, increasing evaporation potential.
Relative humidity does not remain constant with temperature changes, nor does it increase unless moisture is added. Dew point remains unchanged unless moisture content changes.
Understanding this relationship allows restorers to use controlled heat strategically to improve drying efficiency without introducing excess moisture.
질문 # 29
On a Class 4 water intrusion that is 2,000 square feet with an 8-foot ceiling height, how many 400 CFM desiccant dehumidifiers would you need initially?
정답：D
설명：
The IICRC WRT body of knowledge explains that Class 4 water intrusions involve deeply held or bound water and typically require specialized drying methods, including desiccant dehumidification. Initial desiccant sizing is based on cubic footage and airflow capacity rather than AHAM pints.
In this scenario, the affected volume is 2,000 square feet × 8 feet = 16,000 cubic feet. A common WRT starting guideline for desiccant systems is approximately one 400 CFM desiccant unit per 8,000 cubic feet for Class 4 conditions.
Dividing 16,000 cubic feet by 8,000 cubic feet per unit results in an initial recommendation of two 400 CFM desiccant dehumidifiers. This capacity provides sufficient airflow and moisture adsorption to manage the heavy moisture load typical of Class 4 losses.
The WRT manual stresses that this is an initial recommendation and must be validated through psychrometric monitoring and material moisture readings. Desiccant systems are often adjusted as drying progresses.
질문 # 30
In a room that measures 15 feet × 25 feet with the entire floor wet, minimal wicking up the walls (less than 2 feet), and no offsets; initially, how many air movers should be added?
정답：B
설명：
The IICRC WRT guidance uses an initial air-mover recommendation based on affected surface area to support evaporation across wet materials. The WRT manual summarizes the S500-based starting method: (1) place one air mover for each affected area, then (2) add one air mover for every 50 to 70 square feet of affected floor area, and then consider additional adjustments for offsets/insets and other complexities as applicable.
Here, the room is a single affected area and the entire floor is wet. The floor area is 15 × 25 = 375 square feet.
Using the WRT/S500 initial guidance, the floor-area addition is:
* High end: 375 ÷ 50 = 7.5 # round up to 8 air movers
* Low end: 375 ÷ 70 = 5.36 # round up to 6 air movers
Then include the "one per affected area" base air mover for the room. That yields an initial range of 7 to 9 total air movers (1 + 6 to 1 + 8). This matches the correct selection range.
The scenario also states wall wicking is minimal (less than 2 feet) and there are no offsets, so the wall-above-
2-feet rule and offset additions do not apply in the initial count. The objective at this stage is continuous airflow across wet surfaces to maintain a low-humidity boundary layer at the material surface, supporting rapid evaporation. The WRT manual further notes that airflow needs vary by the amount of wet surface area, accessibility, and other field limitations, and professional judgment may require adjustment after monitoring confirms actual drying progress.
질문 # 31
When should carpet cushion (pad, underlay) be removed and discarded?
정답：A
설명：
The IICRC WRT body of knowledge states thatcarpet cushion (pad, underlay) must be removed and discarded when affected by Category 2 or Category 3 water. Carpet cushion is a porous material that readily absorbs and retains contaminants, making effective cleaning and decontamination impractical under these conditions.
The WRT manual explains that even if the overlying carpet may be cleanable in some situations, cushion acts like a sponge and can harbor microorganisms, nutrients, and moisture deep within its structure. Attempting to dry or disinfect contaminated cushion poses a health risk and increases the likelihood of secondary damage or odor problems.
While certain cushion types (such as synthetic felt or cushions with skins) influence restorability in Category
1 losses, contamination level takes precedence. The presence of Category 2 or 3 water alone is sufficient to require removal, regardless of cushion construction or subfloor type.
This guidance reflects the WRT emphasis on protecting occupant health and preventing hidden contamination. Removing and discarding contaminated cushion is considered the appropriate and defensible standard of care.
질문 # 32
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