CA C23 ORNAMENTAL METAL

CA C23 ORNAMENTAL METAL

CONTRACTOR EXAM Questions And Correct Answers (Verified Answers) Plus Rationale2026 Q&A| Instant Download Pdf

• What is the primary material used in ornamental metal fabrication?
• Bronze
• Steel

C. PVC

• Wood

Steel is the most commonly used base material for ornamental metal because of its strength, weldability, and adaptability.

• Which welding process is most common for ornamental metal work?
• Oxy-acetylene

B. TIG

C. MIG

• Stick

MIG welding is fast, efficient, and ideal for thin-to-medium gauge metals used in ornamental work.

3. A radius bend on ornamental railings is typically produced using:

• Chop saw
• Press brake
• Roll bender 1 / 3

• Shear

Roll benders progressively shape metal into curves without sharp kinks, ideal for decorative railings.

4. Hot-dip galvanizing protects steel by:

• Painting
• Applying a zinc coating
• Electrostatic spraying
• Sandblasting

Zinc forms a corrosion-resistant barrier and sacrificial layer protecting steel.

• What tool is commonly used to cut decorative scrolls in flat bar?
• Shear
• Plasma cutter
• Angle grinder
• Sawzall

Plasma cutters offer precision and flexibility for intricate scrollwork.

• Which metal is most resistant to corrosion without coatings?
• Mild steel
• Tool steel
• Stainless steel
• Cast iron

Stainless steel contains chromium, forming a rust-resistant oxide layer.

• When welding ornamental metal to structural steel, the welder must

ensure:

• The paint matches
• Compatibility of metal thickness
• The design is symmetrical
• The shop is open

Unequal thickness requires adjusted heat to avoid burn-through or weak welds. 2 / 3

8. Ornamental iron gates often use pickets made from:

• Aluminum pipe
• Rebar
• Square tubing
• Galvanized conduit

Square tubing provides strength and consistent appearance.

9. A power hammer is used primarily for:

• Polishing metal
• Shaping and forging decorative metal
• Cutting steel
• Drilling holes

Power hammers forge shapes and textures often used in ornamental designs.

10. Powder coating requires:

• A wet brush
• An acetylene torch
• An electrostatic charge
• Oil-based paint

The powder is electrostatically charged to bond to the metal before curing.

• What is the purpose of a scroll bender?
• To weld joints
• To cut angles
• To create decorative spirals
• To drill holes

Scroll benders produce ornamental spirals seen in gates and railings.

• Aluminum fences require which process before painting?
• Heat treatment
• Etching/chemical cleaning
• Water soaking
• / 3