CBI Maintenance Protocols 4

Question 1

The IRC requires lot grading to fall away from the foundation by at least how much within the first 10 feet?

Accepted Answer

6 inches

Answer

IRC R401.3 requires at least a 6-inch fall within the first 10 feet so surface water drains away from the foundation.

Question 2

As a maintenance recommendation, how far from the foundation should downspouts typically discharge water?

Accepted Answer

4–6 feet or more

Answer

Extending downspouts several feet away keeps roof runoff from saturating soil against the foundation.

Question 3

White, powdery efflorescence on a basement wall most directly indicates what?

Accepted Answer

Moisture moving through the masonry

Answer

Efflorescence forms when water carries salts through masonry and evaporates, which points to moisture intrusion that needs drainage maintenance.

Question 4

Under NFPA 10, how often should portable fire extinguishers receive a visual inspection?

Accepted Answer

Monthly

Answer

NFPA 10 requires monthly visual inspections, plus annual maintenance by a qualified person.

Question 5

What is the purpose of a float switch installed in an HVAC secondary condensate drain pan?

Accepted Answer

To shut down the system if condensate backs up

Answer

If the primary drain clogs, the float switch shuts off the unit to prevent water damage.

CBI - Certified Building Inspector Practice Test