InterNACHI Exterior and Grounds Inspection 4

Question 1

An inspector finds that the garage door does not auto-reverse when a 2x4 board is placed flat on the floor in its path. What standard does this fail?

Accepted Answer

UL 325 auto-reverse requirement — door must reverse on contact with a 1.5-inch obstruction

Answer

UL 325 requires automatic garage door openers to reverse when the door contacts an object no higher than 1.5 inches (the height of a 2x4 laid flat).

Question 2

Which exterior lighting condition is a reportable deficiency during a home inspection?

Accepted Answer

Missing covers on exterior electrical boxes exposing live wiring

Answer

Exterior electrical boxes must have weatherproof covers; missing covers expose energized wiring to the elements and create shock and fire hazards.

Question 3

What does efflorescence on a masonry foundation wall indicate to a home inspector?

Accepted Answer

Water has moved through the masonry, depositing mineral salts on the surface

Answer

Efflorescence is the white mineral residue left when water migrates through masonry and evaporates, indicating moisture movement through the wall.

Question 4

An inspector observes that a hose bibb (exterior faucet) has no backflow preventer in a jurisdiction that requires them. Why is this a concern?

Accepted Answer

Contaminated water from a garden hose could siphon back into the potable supply

Answer

Without a backflow preventer, a hose left submerged in a bucket or pool could allow contaminated water to be siphoned into the home's drinking water supply.

Question 5

When inspecting exterior stairs, what baluster spacing deficiency is a safety hazard?

Accepted Answer

Baluster spacing greater than 4 inches, allowing a child's head to pass through

Answer

Baluster spacing exceeding 4 inches creates a strangulation or entrapment hazard for young children whose heads can pass through the opening.

(InterNACHI) International Association of Certified Home Inspectors Practice Test

(InterNACHI) International Association of Certified Home Inspectors Practice Test

InterNACHI Exterior and Grounds Inspection 4