Flood Restoration Knowledge 3 — Questions and Answers
Question 1: Which drying method increases evaporation by moving air across wet surfaces?
- Air movers (Correct answer)
- Heat lamps
- Ozone generators
- Foggers
Correct answer: Air movers
Air movers (fans) accelerate evaporation by directing high-velocity airflow over wet materials.
Question 2: What does GPP stand for in psychrometric drying calculations?
- Gallons Per Pump
- Grains Per Pound (Correct answer)
- Grams Per Particle
- Gauge Pressure Point
Correct answer: Grains Per Pound
GPP (grains per pound) measures the actual amount of moisture in the air.
Question 3: When is it generally appropriate to remove wet drywall rather than dry it in place?
- Always, regardless of category
- When affected by Category 3 contaminated water (Correct answer)
- Only if it is painted
- Never remove drywall
Correct answer: When affected by Category 3 contaminated water
Category 3 contamination usually requires removing porous materials like drywall that cannot be safely sanitized.
Question 4: What is the purpose of applying an antimicrobial during flood restoration?
- To speed evaporation
- To inhibit microbial and mold growth (Correct answer)
- To remove odors only
- To strengthen drywall
Correct answer: To inhibit microbial and mold growth
Antimicrobials are applied to control bacteria and mold growth on affected surfaces.
Question 5: Within how many hours can mold typically begin to grow on wet materials if not dried?
- 24 to 48 hours (Correct answer)
- 7 days
- 2 weeks
- 1 hour
Correct answer: 24 to 48 hours
Mold can begin growing within 24 to 48 hours on damp organic materials.
Question 6: Which tool detects moisture behind walls without causing damage?
- Penetrating moisture meter
- Non-penetrating (non-invasive) moisture meter (Correct answer)
- Pin meter only
- Drill and probe
Correct answer: Non-penetrating (non-invasive) moisture meter
A non-penetrating moisture meter detects moisture through surfaces without leaving holes.
Question 7: What does a 'dry standard' refer to in structural drying?
- A fixed 0% reading
- The normal moisture level of unaffected similar materials (Correct answer)
- Outdoor humidity
- The boiling point of water
Correct answer: The normal moisture level of unaffected similar materials
The dry standard is the moisture content of comparable unaffected material, used as the target goal.
Flood Restoration Knowledge 3
Which drying method increases evaporation by moving air across wet surfaces?