Fence Installation & Materials Flashcards

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

Answer: Angle collar

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

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

Answer: 0.60 pcf

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

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

Answer: To accommodate thermal expansion and contraction

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

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

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

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

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

Answer: Double-acting spring hinge

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

What is the minimum clearance a fence gate must maintain from grade to prevent binding during seasonal ground movement?

Answer: 2 inches

A minimum 2-inch clearance from grade prevents the gate from dragging or binding as the ground heaves with frost or settles.

When boring post holes in rocky soil, which equipment is most effective for penetrating rock formations?

Answer: Hydraulic rock drill attachment

A hydraulic rock drill attachment (rock auger or pneumatic breaker) provides the power needed to penetrate rock formations that standard augers cannot handle.