CFP Materials Selection 2

Question 1

Which wood species is considered the most naturally rot-resistant choice for ground-contact fence posts without chemical treatment?

Accepted Answer

Black locust

Answer

Black locust has exceptional natural durability and is one of the hardest, most rot-resistant domestic woods, making it ideal for ground-contact applications.

Question 2

A customer wants a fence that will not corrode in a coastal saltwater environment. Which metal material is the BEST long-term choice?

Accepted Answer

Aluminum

Answer

Aluminum does not rust and resists salt-air corrosion far better than galvanized or painted steel, making it the preferred metal for coastal installations.

Question 3

What is the primary advantage of using composite fence boards over traditional wood boards?

Accepted Answer

Resistance to rot, insects, and warping

Answer

Composite boards combine wood fiber and plastic to resist moisture, insects, and warping, dramatically extending service life compared to solid wood.

Question 4

When selecting chain-link fabric for a high-security perimeter fence, which gauge wire is the HEAVIEST (strongest)?

Accepted Answer

6 gauge

Answer

In wire gauge systems, lower numbers indicate thicker wire; 6 gauge is the heaviest listed and provides the greatest strength for high-security applications.

Question 5

Pressure-treated lumber rated UC4B is specifically approved for which application?

Accepted Answer

Ground contact in severe environments

Answer

UC4B (Use Category 4B) indicates the lumber is suitable for ground contact in severe conditions such as areas with high decay hazard.

(CFP) Certified Fence Professional Practice Test

(CFP) Certified Fence Professional Practice Test

CFP Materials Selection 2