CFP Fence Installation & Materials 3

Question 1

Which aluminum fence component connects two fence sections at a change of direction less than 180 degrees?

Accepted Answer

Angle collar

Answer

An angle collar (also called a corner collar) adjusts to accommodate direction changes and connects rail ends at non-standard angles.

Question 2

What pressure treatment retention level (UC4B) is required for wood posts in ground contact with critical applications?

Accepted Answer

0.60 pcf

Answer

UC4B critical ground-contact applications require a minimum retention of 0.60 pcf of preservative to resist decay in high-hazard environments.

Question 3

When installing vinyl fence panels, why are expansion gaps necessary at rail-to-post connections?

Accepted Answer

To accommodate thermal expansion and contraction

Answer

Vinyl expands and contracts significantly with temperature changes; leaving expansion gaps prevents buckling or cracking of panels.

Question 4

A wrought iron (ornamental steel) fence develops rust spots. What is the correct preparation step before repainting?

Accepted Answer

Remove rust with wire brush/grinder then apply rust-inhibiting primer

Answer

All rust must be mechanically removed to bare metal, then a rust-inhibiting primer applied before topcoat to prevent recurrence.

Question 5

Which type of fence gate hinge is required when a gate must swing in both directions (two-way swing)?

Accepted Answer

Double-acting spring hinge

Answer

Double-acting spring hinges allow the gate to swing inward and outward and automatically return it to the closed position.

(CFP) Certified Fence Professional Practice Test