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IICRC Exam Questions and Answers: Water Damage Restoration, Exams of Water and Wastewater Engineering

International AcademyWater and Wastewater Engineering

A series of questions and answers related to the iicrc exam, focusing on water damage restoration. It covers topics such as drying processes, materials, humidity control, and microbial growth. Useful for individuals preparing for the iicrc exam or those seeking to understand the principles of water damage restoration.

Typology: Exams

2024/2025

Available from 02/11/2025

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WRT IICRC Exam Questions and answers
2025
Vinyl .wall .covering .affects .drying .process .because .it .is .a .vapor .retarder .- .ANS
✓✓-True
Carpet .can .be .easily .damaged .while .it .is .wet. .If .it .delaminates .the .most .likely
.solution .is .- .ANS✓✓-Recommend .removal .and .replacement
Measures .how .easily .a .vapor .can .pass .through .a .material .- .ANS✓✓-
Permeance
Carpet .seams .should .only .be .cut .where .necessary. .What .is .one .necessary
.reason .for .cutting .seams .in .salvable .carpet? .- .ANS✓✓-To .remove .carpet
.padding
If .drywall .ceiling .are .saturated .and .sagging, .immediately .remove .and .dispose
.of .affected .ceiling .materials .- .ANS✓✓-True
When .drywall .is .saturated .it .gets .very .soft .and .it .won't .regain .its .strength .when
.dry .- .ANS✓✓-False
Which .subfloor .material .is .damaged .the .least .when .it .gets .wet .- .ANS✓✓-
Plywood
To .dry .the .subfloor .underneath .vinyl .flooring, .remove .the .vinyl .- .ANS✓✓-True
When .particle .board .gets .wet .what .should .you .do .with .it .- .ANS✓✓-Dispose .of
.it
Wet .concrete .can .be .dried .by .applying .heat .energy .- .ANS✓✓-True
Drying .a .wet .wall .cavity .by .injecting .air .into .it .speeds .- .ANS✓✓-Evaporation
If .the .dew .point .changes, .what .2 .other .humidity .measurements .change .with .it .-
.ANS✓✓-Vapor .pressure .and .humidity .ratio
What .is .the .measurable .force .that .vapor .creates .on .the .things .around .it .- .ANS
✓✓-Vapor .pressure
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WRT IICRC Exam Questions and answers

Vinyl .wall .covering .affects .drying .process .because .it .is .a .vapor .retarder .- .ANS ✓✓-True Carpet .can .be .easily .damaged .while .it .is .wet. .If .it .delaminates .the .most .likely .solution .is .- .ANS✓✓-Recommend .removal .and .replacement Measures .how .easily .a .vapor .can .pass .through .a .material .- .ANS✓✓- Permeance Carpet .seams .should .only .be .cut .where .necessary. .What .is .one .necessary .reason .for .cutting .seams .in .salvable .carpet? .- .ANS✓✓-To .remove .carpet .padding If .drywall .ceiling .are .saturated .and .sagging, .immediately .remove .and .dispose .of .affected .ceiling .materials .- .ANS✓✓-True When .drywall .is .saturated .it .gets .very .soft .and .it .won't .regain .its .strength .when .dry .- .ANS✓✓-False Which .subfloor .material .is .damaged .the .least .when .it .gets .wet .- .ANS✓✓- Plywood To .dry .the .subfloor .underneath .vinyl .flooring, .remove .the .vinyl .- .ANS✓✓-True When .particle .board .gets .wet .what .should .you .do .with .it .- .ANS✓✓-Dispose .of .it Wet .concrete .can .be .dried .by .applying .heat .energy .- .ANS✓✓-True Drying .a .wet .wall .cavity .by .injecting .air .into .it .speeds .- .ANS✓✓-Evaporation If .the .dew .point .changes, .what. 2 .other .humidity .measurements .change .with .it .- .ANS✓✓-Vapor .pressure .and .humidity .ratio What .is .the .measurable .force .that .vapor .creates .on .the .things .around .it .- .ANS ✓✓-Vapor .pressure

What .is .the .temperature .at .which .air .reaches .100% .relative .humidity .and .condensation .can .occur .- .ANS✓✓-Dew .point What .is .the .weight .of .vapor .in .dry .air .called .- .ANS✓✓-Humidity .ratio .(grains .per .pound) Reducing .the .amount .of .water .vapor .in .the .air .is .called .- .ANS✓✓- Dehumidification The .amount .of .moisture .in .a .sample .of .air, .compared .to .the .maximum .amount .that .air .could .have .in .it, .is .called .- .ANS✓✓-Relative .humidity If .you .heat .the .air .up, .but .do .not .add .anymore .humidity .to .it, .what .will .the .relative .humidity .do .- .ANS✓✓-Decrease If .you .cool .the .air .down, .but .do .not .change .the .amount .of .humidity, .what .will .the .relative .humidity .do .- .ANS✓✓-Increase Vapor .pressure, .like .all .other .pressure .seeks .- .ANS✓✓-Equilibrium On .a .project .with. 50 .degree .air .inside, .what .type .of .dehumidifier .could .work? .- .ANS✓✓-Desiccant In .order .to .use .LGR .dehumidification .on .a .project .that .is. 50 .degrees .inside, .supplemental .heaters .will .be .needed .- .ANS✓✓-True Which .of .these .two .dehu .types .produces .the .lowest .vapor .pressure .air: .conventional .or .LGR .- .ANS✓✓-LGR Which .of .these .two .dehu .types .produces .the .lowest .vapor .pressure .air: .Desiccant .or .LGR .- .ANS✓✓-LGR Outside .a .water .damage .project .it .is. 30 .degrees. .Which .dehu .would .benefit .the .most .from .that .air? .- .ANS✓✓-LGR LGR .dehu .work .best .in .what .temperature .range? .- .ANS✓✓- 70 - 90 Reducing .the .humidity .of .the .air .is .called .dehumidification .- .ANS✓✓-True Desiccants .remove .water .from .the .air .using .silica .- .ANS✓✓-True Refrigerant .dehumidifiers .remove .water .from .the .air .through .- .ANS✓✓- Condensation The .only .time .you .can .consider .open .drying .is .when .the .GPP .outside .is .higher .than .inside .- .ANS✓✓-False

What .category .of .water .is .from .a .sanitary .source .and .not .likely .to .make .you .sick .- .ANS✓✓-Cat. 1 What .category .of .water .contains .significant .contamination .and .can .make .you .sick .- .ANS✓✓-Cat. 2 When .should .a .restorer .consider .bringing .an .IEP .on .a .cat. 2 .or. 3 .water .intrusion? .- .ANS✓✓-Where .there .are .high .risk .individuals .or .situations Products .that .will .reduce .microorganisms .to .a .level .public .agencies .would .consider .safe .are .called .- .ANS✓✓-Sanitizers Where .do .you .look .for .directions .as .to .how .a .biocide .shall .be .applied? .- .ANS✓ ✓-The .product .label Prior .to .application .of .an .antimicrobial, .obtain .authorization .from .the .insurance .adjuster .- .ANS✓✓-False