Year 3 Exam Study Guide — master what the exam actually tests, concept by concept.
Construction sites are one of the most hazardous work environments in Canada. Fall protection, scaffold safety, struck-by and caught-in hazards are among the leading causes of fatalities. This section ensures you can identify hazards, apply controls, and know the regulations that protect workers.
Polyurethane: two-part system. After mixing, chemical reaction progresses; pot life limited (4-12 hrs). Discard if gelled/unusable. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Tank lining: multiple thin coats build thickness safely. Seams overlapped and sealed (prevent edge corrosion). Holiday inspection mandatory. Safety regulations exist because the consequences of ignoring them are severe — injury, death, or legal liability. Know these requirements the way you know your own name.
Building codes, fire codes, and workplace regulations define the minimum standards that protect occupants and workers. These aren't guidelines — they're legal requirements. Knowing your applicable codes means fewer failed inspections, less rework, and a professional reputation that lasts.
Adhesion test (ASTM D3359): grid cuts, tape pull-off. 5B perfect, 4B acceptable, <4B indicates poor adhesion (reject). On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
NESHAP booth: ventilation exhaust through filters (capture overspray). Inspection logs, filter changes documented. Compliance audits possible. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Structural calculations, material quantities, load calculations, and slope determinations are all part of journeyperson knowledge. These questions test your ability to move between units, apply geometric principles, and size materials correctly for the application.
Coal tar cure: temperature and humidity critical. Cold = very slow (weeks). Moisture on substrate prevents adhesion; surface prep essential. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
Cold = very slow (weeks)
HVOF: extremely high-velocity particles (~2000 fps). Mechanical interlocking into surface asperities creates strong bond. Minimal dilution. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Construction materials have specific strengths, limitations, and proper applications. Choosing the wrong adhesive, fastener, or structural member isn't just a quality issue — it can be a structural failure waiting to happen. Know your materials.
Industrial epoxy: SA-2.5 near-white blast critical for adhesion. DFT measured with gauge; specification 3-5 mils typical per application. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Intumescent DFT critical for performance. H120 rating requires specific thickness (e.g., 6mm). Gauge measurement mandatory for QA. Material selection directly affects performance, code compliance, and longevity. Using the wrong type can fail an inspection or create a hazard down the line.
Quality construction depends on proper sequence, technique, and workmanship standards. Whether it's concrete curing, wood framing, or tile installation — how you do it determines how long it lasts. These questions test the procedural knowledge that defines trade-level competency.
Zinc-rich primer: conductive zinc particles (75-85% by weight). Electrical continuity tested; loss of conductivity = loss of protection. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
loss of conductivity = loss of protection
Failure analysis: peeling = adhesion loss. Common causes: wet substrate, dirt, incompatible primer. Must correct root cause before repair. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
peeling = adhesion loss
All 10 exam concepts from this guide — test your recall before you sit the exam.