Page 1 of 97
Connecticut (CT) SM‑2 Limited Sheet Metal Journeyperson
Exam ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
SUMMARIZED EXAM COVERAGE (ABRIDGED)
✔ Duct system design, materials, sizing
✔ Blueprint reading & interpretation
✔ Sheet metal math & layout
✔ Kitchen hood & exhaust ventilation
✔ Exhaust system design & venting codes
✔ Safety (OSHA regulations & PPE)
✔ Welding fundamentals, safety & inspection
1. Duct Design & Materials
1. A designer needs to minimize pressure loss in a long rectangular duct. Which action helps most?
A) Increase duct size
B) Use thicker metal
C) Install more hangers
D) Change insulation type
Answer: A
Rationale: Larger duct cross-section reduces static pressure losses, improving airflow efficiency.
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2. An HVAC drawing shows a rectangular duct gauge of 0.024 inches. Which material thickness
does this represent?
A) Heavy gauge
B) Medium gauge
C) Light gauge
D) Ultra-light gauge
Answer: C
Rationale: Higher gauge numbers correspond to thinner metal; 0.024 in is typical for lighter
ductwork.
3. Which duct installation factor most affects airflow balance in occupied spaces?
A) Color of insulation
B) Duct branch layout
C) Brand of hangers
D) Sheet metal finish
Answer: B
Rationale: Efficient branch layout ensures uniform delivery and balanced airflow.
4. A duct system requires sealing for energy efficiency. Which product meets most code
requirements?
A) Duct tape only
B) Mastic with cloth
C) Silicone caulk only
D) Drywall joint compound
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Answer: B
Rationale: Mastic with reinforcement meets sealing standards for airtight joints.
2. Blueprint Reading
5. On a mechanical plan, a symbol of a rectangle with diagonal slashes indicates what?
A) Return air grille
B) Supply air register
C) Fire damper
D) Access door
Answer: B
Rationale: Supply registers are represented by rectangles with slashes showing airflow direction.
6. A blueprint shows a duct size of 12"x8". What is its cross-sectional area?
A) 80 sq in
B) 96 sq in
C) 144 sq in
D) 160 sq in
Answer: B
Rationale: Area = width × height → 12 × 8 = 96 sq in.
7. A drawing note indicates “match existing elevation.” What should the installer do?
A) Confirm dimensions only
B) Align new duct to existing height
C) Ignore original elevation
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D) Defer to sheet metal gauge
Answer: B
Rationale: Match existing elevation ensures consistent duct routing and connections.
8. A detail shows a break line in a duct run. What does this mean?
A) Electrical work is needed
B) The drawing continues beyond
C) Duct is omitted here
D) There is an obstruction
Answer: B
Rationale: Break lines indicate continuation of the duct run at another drawing section.
3. General Knowledge
9. A sheet metal worker calculates circular duct area. Which formula is correct?
A) πd
B) πr²
C) 2πr
D) πr
Answer: B
Rationale: Area of a circle = π × radius².
10. If 8 in converts to feet, what is the value?
A) 0.33 ft
B) 0.67 ft
Connecticut (CT) SM‑2 Limited Sheet Metal Journeyperson
Exam ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
SUMMARIZED EXAM COVERAGE (ABRIDGED)
✔ Duct system design, materials, sizing
✔ Blueprint reading & interpretation
✔ Sheet metal math & layout
✔ Kitchen hood & exhaust ventilation
✔ Exhaust system design & venting codes
✔ Safety (OSHA regulations & PPE)
✔ Welding fundamentals, safety & inspection
1. Duct Design & Materials
1. A designer needs to minimize pressure loss in a long rectangular duct. Which action helps most?
A) Increase duct size
B) Use thicker metal
C) Install more hangers
D) Change insulation type
Answer: A
Rationale: Larger duct cross-section reduces static pressure losses, improving airflow efficiency.
, Page 2 of 97
2. An HVAC drawing shows a rectangular duct gauge of 0.024 inches. Which material thickness
does this represent?
A) Heavy gauge
B) Medium gauge
C) Light gauge
D) Ultra-light gauge
Answer: C
Rationale: Higher gauge numbers correspond to thinner metal; 0.024 in is typical for lighter
ductwork.
3. Which duct installation factor most affects airflow balance in occupied spaces?
A) Color of insulation
B) Duct branch layout
C) Brand of hangers
D) Sheet metal finish
Answer: B
Rationale: Efficient branch layout ensures uniform delivery and balanced airflow.
4. A duct system requires sealing for energy efficiency. Which product meets most code
requirements?
A) Duct tape only
B) Mastic with cloth
C) Silicone caulk only
D) Drywall joint compound
, Page 3 of 97
Answer: B
Rationale: Mastic with reinforcement meets sealing standards for airtight joints.
2. Blueprint Reading
5. On a mechanical plan, a symbol of a rectangle with diagonal slashes indicates what?
A) Return air grille
B) Supply air register
C) Fire damper
D) Access door
Answer: B
Rationale: Supply registers are represented by rectangles with slashes showing airflow direction.
6. A blueprint shows a duct size of 12"x8". What is its cross-sectional area?
A) 80 sq in
B) 96 sq in
C) 144 sq in
D) 160 sq in
Answer: B
Rationale: Area = width × height → 12 × 8 = 96 sq in.
7. A drawing note indicates “match existing elevation.” What should the installer do?
A) Confirm dimensions only
B) Align new duct to existing height
C) Ignore original elevation
, Page 4 of 97
D) Defer to sheet metal gauge
Answer: B
Rationale: Match existing elevation ensures consistent duct routing and connections.
8. A detail shows a break line in a duct run. What does this mean?
A) Electrical work is needed
B) The drawing continues beyond
C) Duct is omitted here
D) There is an obstruction
Answer: B
Rationale: Break lines indicate continuation of the duct run at another drawing section.
3. General Knowledge
9. A sheet metal worker calculates circular duct area. Which formula is correct?
A) πd
B) πr²
C) 2πr
D) πr
Answer: B
Rationale: Area of a circle = π × radius².
10. If 8 in converts to feet, what is the value?
A) 0.33 ft
B) 0.67 ft
