Free Red Seal Ironworker (Reinforcing) Examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Red Seal Ironworker (Reinforcing) Examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An ironworker proposes replacing a solvent-based coating with an assessed, less hazardous water-based coating. Which hierarchy-of-controls method does this proposal use?

   1. A.SubstitutionCorrect answer: A
   2. B.Elimination
   3. C.Engineering control
   4. D.Administrative control

   Explanation: Replacing one hazardous product with a less hazardous alternative is substitution. Elimination removes the hazard, engineering controls isolate it, and administrative controls change work procedures. Source: “Replacing solvent-based paints with a water-based alternative”

   Reference: CCOHS Hazard and Risk - Hierarchy of Controls — What is substitution?

2. 2Using the examination formula for spacing between wire rope clips, what spacing corresponds to a 12 mm diameter rope?

   1. A.48 mm
   2. B.60 mm
   3. C.84 mm
   4. D.72 mmCorrect answer: D

   Explanation: The supplied formula is six times the rope diameter: 6 × 12 mm = 72 mm. Source: “6 × diameter”

   Reference: Red Seal Ironworker (Reinforcing) Examination Information — Math Formulas

3. 3Using the formula provided on the trade examination, what bending pin diameter is specified for uncoated 30M reinforcing bar of diameter D?

   1. A.8DCorrect answer: A
   2. B.4D
   3. C.6D
   4. D.10D

   Explanation: The examination formula specifies 8D for uncoated bar greater than 25M. The 6D value applies up to 25M; 4D and 10D do not match the given category. Source: “Greater than 25M = 8D”

   Reference: Red Seal Ironworker (Reinforcing) Examination Information — Math Formulas

4. 4A hydraulic stressing jack has an effective piston area of 25 cm² and a pressure of 20 N/cm². Using the examination formula, what force does the piston exert?

   1. A.45 N
   2. B.400 N
   3. C.500 NCorrect answer: C
   4. D.625 N

   Explanation: Force equals area multiplied by pressure: 25 cm² × 20 N/cm² = 500 N. The other results come from adding the inputs or squaring one of them. Source: “area × pressure”

   Reference: Red Seal Ironworker (Reinforcing) Examination Information — Math Formulas

5. 5Welding fumes are released at a fixed work point. Which ventilation approach is designed to remove the contaminant at its source before it disperses into the work space?

   1. A.General dilution ventilation
   2. B.Local exhaust ventilationCorrect answer: B
   3. C.Natural dilution ventilation
   4. D.General supply ventilation

   Explanation: Local exhaust captures contaminants at their source. General and natural dilution approaches mix or exchange air in the wider work area rather than capturing the release directly. Source: “Local exhaust ventilation is designed to remove the contaminant at the source so it cannot disperse into the work space”

   Reference: CCOHS Hazard and Risk - Hierarchy of Controls — Ventilation

6. 6Under CCOHS wire-rope inspection guidance, what is the minimum number of broken wires in one strand within one rope lay that calls for discarding a running hoist rope?

   1. A.2 broken wires
   2. B.3 broken wiresCorrect answer: B
   3. C.4 broken wires
   4. D.6 broken wires

   Explanation: For a running rope, CCOHS specifies three or more broken wires in one strand in one lay. The separate six-wire criterion counts wires across the rope in one lay. Source: “3 or more broken wires in one strand in one rope lay.”

   Reference: CCOHS Materials Handling - Hoist Wire Rope — When should you stop using the rope?

7. 7A bar with a diameter of 20 mm has three specified lengths of 1,000 mm, 500 mm and 300 mm and two bends. Using the examination's cut-length formula, what cut length is required?

   1. A.1,840 mm
   2. B.1,880 mmCorrect answer: B
   3. C.1,860 mm
   4. D.1,920 mm

   Explanation: The listed lengths total 1,800 mm. The allowance is 2 × 20 mm for each of two bends, or 80 mm, giving 1,880 mm. The other options omit or miscalculate part of the allowance. Source: “all lengths + 2 bar diameters per bend”

   Reference: Red Seal Ironworker (Reinforcing) Examination Information — Math Formulas

8. 8Which hardened-grout property directly describes resistance to water and chloride ingress in a post-tensioning duct?

   1. A.High fluidity
   2. B.Low permeabilityCorrect answer: B
   3. C.High compressive strength
   4. D.Low bleed rate

   Explanation: Low permeability helps restrict contaminant ingress through hardened grout. PTI identifies low permeability among desired grout properties and describes the grout barrier protecting tendons. Source: “low permeability, bleed resistance, and stability.”

   Reference: PTI Technical Note 19 — Technical Note 19, cementitious grout

9. 9A worker needs to find the recommended response to an accidental release of a hazardous product. Which WHMIS safety data sheet section should the worker consult?

   1. A.Section 4
   2. B.Section 5
   3. C.Section 6Correct answer: C
   4. D.Section 7

   Explanation: Section 6 covers accidental releases; sections 4, 5 and 7 address first aid, firefighting, and handling and storage respectively. Source: “6 Accidental release measures”.

   Reference: CCOHS WHMIS Safety Data Sheet — SDS sections table

10. 10A balanced 4,000 lb load is lifted by two identical sling legs. Each leg is 2 m long, with a vertical height of 1 m. Using the examination formula, what is the tension in each leg?

    1. A.4,000 lbCorrect answer: A
    2. B.1,000 lb
    3. C.2,000 lb
    4. D.8,000 lb

    Explanation: Tension per leg is load ÷ number of legs × leg length ÷ vertical height: 4,000 ÷ 2 × 2 ÷ 1 = 4,000 lb. Source: “W # slings × L vert . length”

    Reference: Red Seal Examination Information — Math Formulas, sling tension