Ironworker is three Red Seal trades, and each has its own exam of 120 multiple-choice questions: Ironworker (Generalist), 420B in Ontario; Ironworker (Structural/Ornamental), 420A; and Ironworker (Reinforcing), which Ontario calls Reinforcing Rodworker (452A). The Red Seal Exam Preparation Guide gives the pass mark as 70 per cent, which means 84 correct answers, and the writing time as four hours. The Generalist exam has six blocks, led by rigging, hoisting and cranes with 32 questions and erection, assembly and installation with 31. Structural/Ornamental has four, led by erection with 43 and rigging with 38. Reinforcing has four, led by reinforcing materials with 49. Generalist and Structural/Ornamental put 50 to 60 per cent of their questions on knowledge and recall; Reinforcing puts 65 to 75 per cent there. The exam information page for each exam lists a formula sheet and an acronym list that are provided at the sitting, and the three formula sheets are not the same.
01What are the Ironworker Red Seal exams?
Ironworker is not one Red Seal trade but three, each with its own standard, its own certificate and its own 120-question exam. The Red Seal Program lists them as Ironworker (Generalist), Ironworker (Structural/Ornamental) and Ironworker (Reinforcing). In Ontario, Skilled Trades Ontario calls them Ironworker - Generalist (420B), Ironworker - Structural and Ornamental (420A) and Reinforcing Rodworker (452A). The Red Seal trade pages give Quebec's titles as Ironworker for Structural/Ornamental and Reinforcing Steel Erector for Reinforcing. You will also see the exam called the interprovincial (IP) exam or, in Ontario, the certifying or C of Q exam.
The content is set nationally. According to the Red Seal Exam Preparation Guide, tradespeople from across Canada decide what goes into each trade's Red Seal Occupational Standard, write and review the exam questions, and decide how many questions each section gets. The exam is then administered by the provincial and territorial apprenticeship and certification authorities; in Ontario that is Skilled Trades Ontario.
The format is the same on all three exams and on every Red Seal exam: multiple choice, four options (A to D), one correct answer and one mark per question. Each of the three Ironworker exams has 120 questions. The Red Seal Exam Preparation Guide gives the writing time as four hours, about 2 minutes per question; the exam information pages for these trades do not repeat it, so confirm the time when you book. The preparation guide gives the pass mark as 70 per cent, so you need 84 correct answers and can miss 36.
Each trade has a Red Seal Occupational Standard published in 2025, and the breakdowns below follow those standards. The Red Seal site is not consistent about which standard the current exams follow; that is covered in which standard the exams are based on, further down.
02Which Ironworker exam do you write?
The one for the trade you are certifying in. Each of the three is designated Red Seal in a different set of provinces, so where you work narrows it down. The Red Seal trade pages list them like this.
| Province | Generalist | Structural/ Ornamental | Reinforcing |
|---|---|---|---|
| Alberta | · | Yes | Yes |
| British Columbia | Yes | · | Yes |
| Manitoba | Yes | · | · |
| New Brunswick | Yes | Yes | Yes |
| Newfoundland and Labrador | Yes | Yes | Yes |
| Nova Scotia | Yes | Yes | Yes |
| Ontario | Yes (420B) | Yes (420A) | Yes (452A) |
| Prince Edward Island | Yes | Yes | Yes |
| Quebec | · | Yes (title Ironworker) | Yes (title Reinforcing Steel Erector) |
| Saskatchewan | · | Yes | Yes |
The trade pages list none of the three for Yukon, the Northwest Territories or Nunavut. Manitoba is listed for Generalist only and British Columbia for Generalist and Reinforcing; Alberta, Saskatchewan and Quebec are listed for Structural/Ornamental and Reinforcing but not Generalist. New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario and Prince Edward Island are listed for all three, so there the exam depends on the trade you apprenticed or qualified in. If you are not sure which one you are registered in, your apprenticeship authority can tell you before you book.
The Program's trade pages describe the split in the work. Ironworkers (generalist) work with both structural/ornamental and reinforcing steel. Ironworkers (structural/ornamental) install structural and ornamental steel components, precast structural concrete members and mass timber products, and erect pre-engineered buildings, ornamental ironwork such as curtain walls, metal stairways and railings, and scaffolding, cranes, hoists and derricks. Ironworkers (reinforcing) cut, bend, lay out, hoist, place, tie, couple and weld reinforcing steel bars, welded wire fabric and composite materials, and place and stress post-tensioning systems. The Program designated Generalist in 1991 and the other two in 2006, and all three share NOC code 72105.
In Ontario, Skilled Trades Ontario's 2025 trade reports count 150 Certificates of Qualification issued for Ironworker - Structural and Ornamental (420A) and 30 for Reinforcing Rodworker (452A).
03What is on each Ironworker exam?
The Red Seal Program publishes how many questions come from each major work activity (block) on its exam information page for each trade. The block titles below are the 2025 standards' own.
Ironworker (Generalist), 420B: six blocks
| Block | Major work activity | Questions | Share of exam |
|---|---|---|---|
| A | Performs common occupational skills | 14 | 11.7% |
| B | Performs rigging, hoisting and positioning, and mobilization, erection, and demobilization of cranes | 32 | 26.7% |
| C | Fabricates and installs reinforcing materials | 21 | 17.5% |
| D | Performs pre-stressing/post-tensioning | 10 | 8.3% |
| E | Performs erection, assembly and installation | 31 | 25.8% |
| F | Performs maintenance and upgrading | 12 | 10.0% |
| Total | 120 | 100% | |
Rigging, hoisting and cranes (B, 32) and erection, assembly and installation (E, 31) are over half the Generalist exam, 63 of 120. Add reinforcing materials (C, 21) and those three blocks hold 84 questions. The lightest are common occupational skills (A, 14), maintenance and upgrading (F, 12) and pre-stressing/post-tensioning (D, 10).
Ironworker (Structural/Ornamental), 420A: four blocks
| Block | Major work activity | Questions | Share of exam |
|---|---|---|---|
| A | Performs common occupational skills | 20 | 16.7% |
| B | Performs rigging, hoisting and positioning, and mobilization, erection, and demobilization of cranes | 38 | 31.7% |
| C | Performs erection, assembly and installation | 43 | 35.8% |
| D | Performs maintenance and upgrading | 19 | 15.8% |
| Total | 120 | 100% | |
Erection, assembly and installation (C) has 43 questions, more than a third of the exam, and rigging, hoisting and cranes (B) has 38: together 81 of 120. Common occupational skills (A) has 20 and maintenance and upgrading (D) 19. There are no reinforcing or post-tensioning blocks on this exam.
Ironworker (Reinforcing), 452A: four blocks
| Block | Major work activity | Questions | Share of exam |
|---|---|---|---|
| A | Performs common occupational skills | 29 | 24.2% |
| B | Performs rigging, hoisting and positioning, and participates in crane and equipment mobilization and demobilization | 28 | 23.3% |
| C | Fabricates and installs reinforcing materials | 49 | 40.8% |
| D | Performs pre-stressing/post-tensioning | 14 | 11.7% |
| Total | 120 | 100% | |
Reinforcing materials (C) has 49 questions, about two in five, the largest block on any of the three exams. Common occupational skills (A, 29) and rigging, hoisting and positioning (B, 28) are close behind, and pre-stressing/post-tensioning (D) has 14. There are no erection or maintenance blocks on this exam.
Each exam information page also links a Self-Assessment Guide. The PDF versions, as downloaded on October 4, 2026, still show the older blocks of the 2015 National Occupational Analysis (seven blocks for Generalist and five each for the other two, with cranes as a block of its own in all three), so their counts do not match the tables above. Use the exam information page for the counts.
04What does each block cover?
The three standards share most of their tasks, so the table lists every task once, in the Generalist standard's numbering, with the questions each exam assigns to it. The Structural/Ornamental exam letters its erection and maintenance blocks C and D and numbers their tasks 10 to 14 (shown in brackets); the Reinforcing exam keeps the Generalist letters and numbers. A dot means the task is not part of that trade's standard.
| Task (Generalist numbering) | Generalist | Structural/ Ornamental | Reinforcing |
|---|---|---|---|
| A-1 Maintains safe and healthy workplace | 4 | 5 | 7 |
| A-2 Uses and maintains tools and equipment | 5 | 7 | 11 |
| A-3 Organizes work | 3 | 6 | 9 |
| A-4 Maintains continuous learning | 1 | 1 | 1 |
| A-5 Uses communication and mentoring techniques | 1 | 1 | 1 |
| B-6 Plans lift | 8 | 10 | 6 |
| B-7 Rigs, hoists and positions load | 11 | 14 | 12 |
| B-8 Performs post-lift activities | 6 | 7 | 6 |
| B-9 Performs mobilization, erection and demobilization of cranes (Reinforcing: participates in mobilization and demobilization of cranes and equipment) | 7 | 7 | 4 |
| C-10 Fabricates reinforcing materials on-site | 7 | · | 15 |
| C-11 Installs reinforcing materials | 14 | · | 34 |
| D-12 Places pre-stressed/post-tensioning systems | 6 | · | 8 |
| D-13 Stresses tendons | 3 | · | 4 |
| D-14 Grouts tendons | 1 | · | 2 |
| E-15 Installs primary and secondary structural members | 16 | 20 (C-10) | · |
| E-16 Installs ornamental, miscellaneous and steel cladding systems and components | 8 | 12 (C-11) | · |
| E-17 Installs conveyors, machinery and equipment | 7 | 11 (C-12) | · |
| F-18 Decommissions, disassembles and removes structural, ornamental, mechanical and miscellaneous components | 7 | 9 (D-13) | · |
| F-19 Maintains and repairs components | 5 | 10 (D-14) | · |
| Total | 120 | 120 | 120 |
The largest single task is installs reinforcing materials, 34 questions on the Reinforcing exam. On Structural/Ornamental it is installs primary and secondary structural members with 20, and on Generalist the same task with 16, then installing reinforcing materials with 14.
Block A: Common occupational skills (14, 20 and 29 questions)
Five tasks on all three exams. Maintains safe and healthy workplace covers a safe work environment, PPE and safety equipment, and a healthy and respectful workplace. Uses and maintains tools and equipment covers hand and measuring tools, power tools, mobile elevating work platforms (MEWPs), material handling equipment, ladders, scaffolding, surveying equipment, welding equipment and mechanical and thermal cutting equipment; bending tools are in the Generalist and Reinforcing standards and powder-actuated tools in the Generalist and Structural/Ornamental ones. Organizes work covers materials and supplies, layout, drawings and documentation, and planning tasks. Maintains continuous learning and uses communication and mentoring techniques carry one question each on every exam. Reinforcing gives this block 29 questions, about a quarter of its exam, against 14 on Generalist.
Block B: Rigging, hoisting and cranes (32, 38 and 28 questions)
Four tasks. Plans lift covers assessing the load, the pre-lift analysis, selecting rigging, hoisting and positioning equipment and securing the lift area. Rigs, hoists and positions load covers inspecting and assembling that equipment, attaching rigging to the load, hoisting and positioning, and securing the load before the rigging is removed. Performs post-lift activities covers the post-lift inspection and disassembling and maintaining the equipment. The fourth task differs. On Generalist and Structural/Ornamental it is performs mobilization, erection and demobilization of cranes, which the Generalist standard says includes mobilizing telescopic boom cranes and erecting lattice boom cranes, tower cranes and derricks. On Reinforcing it is participates in mobilization and demobilization of cranes and equipment, which that standard says includes mobilizing mobile cranes or boom trucks. Rigs, hoists and positions load is the largest task in this block on every exam: 11, 14 and 12 questions.
Block C: Reinforcing materials (Generalist 21, Reinforcing 49)
Two tasks, not on the Structural/Ornamental exam. Fabricates reinforcing materials on-site covers cutting and bending them; the Generalist standard names rebar, welded wire mesh fabric and post-tension materials. Installs reinforcing materials covers placing, tying and splicing them. Installation is 14 questions on Generalist and 34 on Reinforcing.
Block D: Pre-stressing and post-tensioning (Generalist 10, Reinforcing 14)
Three tasks, not on the Structural/Ornamental exam. Places pre-stressed/post-tensioning systems covers laying out the profile, placing tendons and accessories, installing bursting steel and anchorages, connecting tendons to anchorages and protecting exposed tendons. Stresses tendons covers setting up and removing stressing equipment, tensioning, cutting and capping tendons, and de-stressing them. Grouts tendons covers setting up grouting equipment and installing grout, which the standard says gives a bonded system a mechanical bond as well as corrosion protection.
Block E: Erection, assembly and installation (Generalist 31, Structural/Ornamental 43)
Three tasks, not on the Reinforcing exam (block C on Structural/Ornamental). Installs primary and secondary structural members covers falsework, attaching members, levelling, plumbing and aligning them, and completing the installation. The standard lists columns, beams, girders and trusses as primary members and girts, purlins, braces and joists as secondary, and its bolt-tensioning methods include set torque value, turn-of-nut, direct tension indicators and tension control. Installs ornamental, miscellaneous and steel cladding systems and components covers curtain walls and window walls (the Generalist standard adds precast walls), miscellaneous components such as stairs, railings, grating, decking and catwalks, and steel cladding and building envelope systems. Installs conveyors, machinery and equipment covers material handling systems and their alignment and commissioning.
Block F: Maintenance and upgrading (Generalist 12, Structural/Ornamental 19)
Two tasks, not on the Reinforcing exam (block D on Structural/Ornamental). Decommissions, disassembles and removes structural, ornamental, mechanical and miscellaneous components starts with confirming that decommissioning has been done: the standard says it is critical that systems are first decommissioned, de-energized and locked out before disassembly work. Maintains and repairs components covers assessing their condition, repairs, revisions and reinforcing, replacing components and preventative maintenance.
05What do the three exams share, and what differs?
All three exams draw on the same first two blocks, common occupational skills and rigging, hoisting and cranes, but weight them differently: 46 of the 120 Generalist questions, 58 on Structural/Ornamental and 57 on Reinforcing.
After that they split. Structural/Ornamental adds the erection and maintenance blocks, 62 questions. Reinforcing adds the reinforcing and post-tensioning blocks, 63 questions. Generalist carries all six blocks, so it covers both sides of the trade in fewer questions each: 43 on erection and maintenance and 31 on reinforcing and post-tensioning.
Inside the shared blocks the differences are small: the Reinforcing standard has bending tools but not powder-actuated tools, the Structural/Ornamental standard the reverse, and the Generalist standard both, and on Reinforcing the crane task is taking part in mobilizing and demobilizing cranes and equipment rather than erecting them. The bigger differences are the question mix, the formula sheet and the acronym list, covered next. A Generalist candidate needs both sides of the trade; a Structural/Ornamental or Reinforcing candidate can leave the other side's blocks alone.
06What kind of questions are they?
The Red Seal Program gives the question mix for each exam on its exam information page. On 120 questions, the ranges work out like this.
| Question type | Generalist | Structural/ Ornamental | Reinforcing |
|---|---|---|---|
| Knowledge and recall | 50 to 60% (60 to 72) | 50 to 60% (60 to 72) | 65 to 75% (78 to 90) |
| Procedural and application | 35 to 45% (42 to 54) | 35 to 45% (42 to 54) | 25 to 35% (30 to 42) |
| Critical thinking | under 10% (fewer than 12) | under 10% (fewer than 12) | under 10% (fewer than 12) |
These are recall-heavy exams. Every other trade we cover puts at most half its questions on knowledge and recall; the highest is Welder (456A) at 40 to 50 per cent.
Each exam information page gives one example of each type. The Generalist examples are about rebar colour coding, a conveyor procedure and a hoisting calculation; the Structural/Ornamental ones about types of drawings, handling a structural steel delivery and a bolt calculation; and the Reinforcing ones about types of drawings, rigging coated rebar and a hoisting calculation in metric units.
The exam information pages say knowledge and recall questions test definitions, facts and principles, procedural and application questions test applying procedures to a situation, and critical thinking questions test interpreting data, solving problems and reaching valid conclusions. The preparation guide adds that procedural questions might include calculations, and that some critical thinking questions are complex and need an analysis of the situation and more than one calculation. The exam pages say there are no trick questions, but the incorrect options are not always obvious. For these exams, practise naming components, hardware and drawings exactly, putting the steps of a procedure in order, and working the formula sheet's calculations until you can choose the right formula without hesitating.
07What do you get in the exam room?
The Red Seal Exam Preparation Guide lists what you are provided with: an exam booklet, a diagram booklet if one is required, a pencil and eraser, a calculator if needed, and a bubble sheet to record your answers. It also lists other reference material "if required": an acronym list, math formulas and code book information. Scrap paper is provided too.
For all three Ironworker exams, the exam information page publishes a formula sheet and an acronym list and says both will be provided with the exam sitting. The acronym lists differ in length: 52 terms for Generalist, 45 for Structural/Ornamental and 60 for Reinforcing. You get the meaning of each acronym, not how it applies; WWF, for example, is welded wide flange on the Structural/Ornamental list and welded wire fabric on the Reinforcing list. The exam information pages do not mention a code book; SkilledTradesBC lists "Code Book Provided: None" for its Generalist and Reinforcing Red Seal exams.
The guide's rules say no materials, bags, phones, watches or personal calculators in the room (a calculator is provided if you need one), and your province or territory may have rules of its own. More on the day itself is in what to expect on exam day.
08How do the three formula sheets differ?
Each exam has its own formula sheet, published on its exam information page. They share a core of rigging and geometry formulas and differ in the rest.
| On the sheet | Generalist | Structural/ Ornamental | Reinforcing |
|---|---|---|---|
| π = 3.1416; 1 ft. × 1 ft. × 1 in. of steel plate = 40.8 lb. | Yes | Yes | Yes |
| Area of a circle, circumference, force (area × pressure), Pythagorean theorem | Yes | Yes | Yes |
| Sling tension, working load limit (diameter squared × 2,000), number of wire rope clips (3D + 1) and spacing between clips (6D) | Yes | Yes | Yes |
| 1 kg = 2.2 lb. | Yes | · | · |
| Ladder ratio; overall length with 2 bends for double hooks; weight on a snatch block (2 × weight) | Yes | · | · |
| Density of steel = 490 lb./ft³; theoretical mechanical advantage of a pulley = 1:X | · | Yes | · |
| Lead line pull; theoretical mechanical advantage (effort length ÷ resistance height) | · | Yes | · |
| Turn-of-nut rotation from snug tight, by bolt length and face slope (a table) | · | Yes | · |
| Cut length (all lengths + 2 bar diameters per bend); bending pin diameter for uncoated bar (6D up to 25M, 8D above) | · | · | Yes |
The Generalist sheet has its own rebar line, the overall length with two bends for double hooks, but not the Reinforcing sheet's cut-length and bending-pin lines, and it does not carry the Structural/Ornamental sheet's turn-of-nut table or lead line pull, although the Generalist exam has 21 reinforcing questions and 31 erection questions. If you write Generalist, do not expect to find those lines on your sheet. Whichever exam you write, print its sheet from the exam information page and practise with it.
The preparation guide's advice on formulas is that the key is knowing when to use which one. For ironwork that means knowing what each letter stands for: sling tension uses the sling length over its vertical length, the clip rule uses the rope diameter, and the working load limit line on the sheet gives no units, so read each question's units carefully. Our free Ironworker Red Seal practice questions are a place to start.
09Which standard are the exams based on?
All three trades have a Red Seal Occupational Standard published in 2025: Generalist (catalogue number Em15-3/47-2025E-PDF), Reinforcing (Em15-3/48-2025E-PDF) and Structural/Ornamental (Em15-3/49-2025E-PDF). Before them, each trade had a 2015 National Occupational Analysis.
The Red Seal sources do not all say the same thing about which one the current exams use. When we checked on October 4, 2026, each trade page still said that new exams based on the new standard are under development and linked the 2015 analysis as the standard for the current exams, and each standard's overview page said exams based on it are under development. The exam information pages, whose page data dates them September 25, 2026 against March 11, 2025 for the trade pages, publish breakdowns that follow the tasks of the 2025 standards, and those are the breakdowns on this page.
SkilledTradesBC lists a Red Seal exam for Generalist active as of August 31, 2026 and one for Reinforcing active as of July 27, 2026, and its exam updates for both trades read "IP Exams aligned to the 2025 Red Seal Occupational Standards (RSOS)". We found no statement of that kind for Structural/Ornamental, which the Red Seal trade page does not list for British Columbia. If you are writing soon, ask your apprenticeship authority which version you will sit.
10How do you become a Red Seal ironworker in Ontario?
Ontario has all three. Skilled Trades Ontario's trade pages describe each as non-compulsory, with a certifying exam that earns a Certificate of Qualification that does not have to be renewed.
Ironworker - Structural and Ornamental (420A): the trade page sets the apprenticeship at 6,000 hours, approximately three and a half years, made up of 5,280 hours on the job and 720 hours of in-school training over three levels, and says the trade is part of the Red Seal Program under the title Ironworker (structural/ornamental). The 2025 trade report gives the same hours (720 hours of technical training, six months across three levels) and Grade 10 as the academic entry level.
Reinforcing Rodworker (452A): 4,000 hours, approximately two and a half years, made up of 3,640 hours on the job and 360 hours of in-school training over two levels, under the Red Seal title Ironworker (Reinforcing). The 2025 trade report gives 360 hours of technical training, three months across two levels, and Grade 10 as the academic entry level.
Ironworker - Generalist (420B): the trade page marks it as a Red Seal trade with an apprenticeship program and a certifying exam, and files its training standard under the code 420B. Experienced workers who have not completed an Ontario apprenticeship but have equivalent qualifications or experience can use Skilled Trades Ontario's Trade Equivalency Assessment; see how to challenge the Red Seal exam.
The national standards recommend three levels of technical training for Generalist and for Structural/Ornamental and two for Reinforcing, give total training hours of 5,400 for each of the first two and 3,600 for Reinforcing, and note that implementation may vary from jurisdiction to jurisdiction.
11Where do you write it?
Each province and territory administers the exam and sets eligibility, fees and rewrite rules. See the Ontario Red Seal exam guide, Alberta, British Columbia, Saskatchewan or the guides by province, compare Red Seal exam fees by province, and read what happens if you fail the Red Seal exam before you book. If you have the experience but no apprenticeship, see how to challenge the Red Seal exam.
12How hard are the Ironworker Red Seal exams?
They are demanding in three ways. First, the recall load: half or more of every exam is knowledge and recall, up to three in four on Reinforcing, so you need the names of components, hardware, drawings and methods exactly, not roughly. Second, the scope: the Generalist standard has 19 tasks and 70 sub-tasks across structural and reinforcing work alike; Structural/Ornamental has 14 tasks and 52 sub-tasks, and Reinforcing 14 and 53. If you mostly erect steel and write Generalist, the 31 questions on reinforcing and post-tensioning may be the part you do least; if you mostly place rebar, the 43 on erection and maintenance may be. Third, the arithmetic: rigging calculations such as sling tension, working load limits and wire rope clips sit on all three formula sheets, and you work them with the calculator provided.
We found no pass rate published by the Red Seal Program, for these trades or any other, and no ranking of the trades by difficulty. The provincial figures we found, each counted a different way, are set out in how hard is the Red Seal exam.
13How much does a Red Seal ironworker make?
For Ontario, Skilled Trades Ontario's 2025 trade reports for Ironworker - Structural and Ornamental (420A) and Reinforcing Rodworker (452A) both give an annual range of $66,000 to $102,000 and an hourly range of $34 to $52, from Workforce Planning Ontario's Labour Market Insights Report 2025. The reports note that the figures apply to the National Occupational Classification code 72105, which covers both trades, and that other trades or occupations may be included, so they describe the occupation in Ontario, not Red Seal holders alone. Pay elsewhere in Canada is not covered by those reports.
14How should you prepare?
Follow the weights of your own exam.
Generalist: B (32), E (31), C (21), A (14), F (12), D (10). Blocks B, E and C are 84 of the 120 questions. A realistic 63 of those 84, three in four, leaves you needing 21 of the other 36, so common skills, maintenance and post-tensioning still count. The largest tasks are structural members (16), installing reinforcing materials (14) and rigging, hoisting and positioning loads (11).
Structural/Ornamental: C (43), B (38), A (20), D (19). Blocks C and B are 81 of the 120. Getting 61 of those 81 right leaves you needing 23 of the other 39. The largest tasks are structural members (20), rigging, hoisting and positioning loads (14) and ornamental, miscellaneous and cladding work (12).
Reinforcing: C (49), A (29), B (28), D (14). Block C alone is 49 of the 120, and installing reinforcing materials alone is 34. Getting 37 of the 49 in block C right leaves you needing 47 of the other 71, and common skills and rigging, 57 questions between them, together outweigh block C.
Rate yourself on every task in your exam's breakdown, using the three levels in the Red Seal Self-Assessment Guide, and write down how many questions you expect to get right; a low rating on a large task is your first priority. Use the task counts on the exam information page, since the Self-Assessment Guide PDFs still show the older blocks. Learn your exam's acronym list and practise with your exam's own formula sheet. The preparation guide tells you to answer every question, even if you have to guess. For a full method, see how to study for the Red Seal exam.
Official links: the exam information pages for Generalist, Structural/Ornamental and Reinforcing (the breakdown, the question mix with three examples, the formula sheet and the acronym list), and the 2025 standards for Generalist, Structural/Ornamental and Reinforcing as PDFs.
15Questions people ask
- How many questions are on the Ironworker Red Seal exam?
- Each of the three Ironworker Red Seal exams, Generalist (420B in Ontario), Structural/Ornamental (420A) and Reinforcing (452A), has 120 multiple-choice questions with four options and one correct answer. The Red Seal Exam Preparation Guide gives the pass mark as 70 per cent, which means 84 correct answers, and a four-hour writing time, about 2 minutes per question. Generalist has six blocks; Structural/Ornamental and Reinforcing have four each.
- What is the difference between the Generalist, Structural/Ornamental and Reinforcing exams?
- They are three separate Red Seal trades. All three exams share common occupational skills and rigging, hoisting and cranes. Structural/Ornamental adds erection, assembly and installation (43 questions) and maintenance and upgrading (19). Reinforcing adds reinforcing materials (49) and pre-stressing/post-tensioning (14). Generalist has all six blocks. Reinforcing puts 65 to 75 per cent of its questions on knowledge and recall; the other two put 50 to 60 per cent.
- Is there a formula sheet on the Ironworker Red Seal exam?
- Yes. Each of the three exam information pages publishes a formula sheet and an acronym list and says both will be provided with the exam sitting. All three sheets include sling tension, working load limit, wire rope clips, circle and Pythagorean formulas. Only the Generalist sheet has the ladder ratio, double-hook length and snatch block lines, only the Structural/Ornamental sheet has lead line pull and the turn-of-nut table, and only the Reinforcing sheet has cut length and bending pin diameters.
- Which Ironworker exam do I write in my province?
- The one for the trade you are certifying in. The Red Seal trade pages list Generalist in British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario and Prince Edward Island; Structural/Ornamental in Alberta, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, Quebec and Saskatchewan; and Reinforcing in all of those provinces except Manitoba. Your apprenticeship authority can confirm which one you are registered in.
- What are 420A, 420B and 452A?
- They are Ontario's trade codes. 420B is Ironworker - Generalist, 420A is Ironworker - Structural and Ornamental, and 452A is Reinforcing Rodworker, which is the Red Seal trade Ironworker (Reinforcing). Each is a separate Red Seal trade with its own 120-question exam.
16Sources
- Red Seal Program: Ironworker (Generalist) exam information: 120 questions, the question count for each major work activity and task, the question mix with one example of each type, the formula sheet and the acronym list provided with the exam.
- Red Seal Program: Ironworker (Structural/Ornamental) exam information: the same for the Structural/Ornamental exam.
- Red Seal Program: Ironworker (Reinforcing) exam information: the same for the Reinforcing exam.
- Red Seal Program: Ironworker (Generalist) trade page: where the trade is designated Red Seal, its titles, designation year and NOC code, and the note that new exams are under development.
- Red Seal Program: Ironworker (Structural/Ornamental) trade page: the same for Structural/Ornamental, including the Ontario and Quebec titles.
- Red Seal Program: Ironworker (Reinforcing) trade page: the same for Reinforcing, including the Ontario and Quebec titles.
- Red Seal Occupational Standard: Ironworker (Generalist) (2025, PDF): the 6 major work activities, 19 tasks and 70 sub-tasks, task descriptions and ranges of variables, and the harmonization recommendations.
- Red Seal Occupational Standard: Ironworker (Structural/Ornamental) (2025, PDF): 4 major work activities, 14 tasks and 52 sub-tasks, and the harmonization recommendations.
- Red Seal Occupational Standard: Ironworker (Reinforcing) (2025, PDF): 4 major work activities, 14 tasks and 53 sub-tasks, the crane task description, and the harmonization recommendations.
- Red Seal Exam Preparation Guide: exam format, pass mark, writing time, question types, exam supplies and exam room rules.
- SkilledTradesBC: Ironworker (Generalist): the Red Seal exam active as of August 31, 2026, the update on exams aligned to the 2025 standards, and the code-book line.
- SkilledTradesBC: Ironworker (Reinforcing): the Red Seal exam active as of July 27, 2026, the update on exams aligned to the 2025 standards, and the code-book line.
- Skilled Trades Ontario: Ironworker - Generalist: the trade's status, certifying exam and Certificate of Qualification, and the 420B training standard.
- Skilled Trades Ontario: Ironworker - Structural and Ornamental: the trade's status, apprenticeship hours and levels, and Red Seal title.
- Skilled Trades Ontario: Reinforcing Rodworker: the trade's status, apprenticeship hours and levels, and Red Seal title.
- Skilled Trades Ontario: Ironworker - Structural and Ornamental (420A) 2025 trade report: the entry level, training hours, certificates issued and pay ranges.
- Skilled Trades Ontario: Reinforcing Rodworker (452A) 2025 trade report: the entry level, training hours, certificates issued and pay ranges.
- Skilled Trades Ontario: Trade Equivalency Assessment: the Ontario route for experienced workers who did not complete an Ontario apprenticeship.
The question counts, question mixes, examples, formula sheets and acronym lists come from the Red Seal Program's three exam information pages, read on October 4, 2026; the block and task titles, sub-task counts and task contents from the three 2025 Red Seal Occupational Standards; the designations, titles, designation years and NOC code from the three trade pages, which together with the overview pages also carry the note that exams on the new standards are under development. The Self-Assessment Guide PDFs were read the same day. SkilledTradesBC's exam dates and code-book line come from its Generalist and Reinforcing program pages, read on October 4, 2026. The Ontario status, hours and titles come from Skilled Trades Ontario's three trade pages; the entry level, certificate counts and pay ranges from its 2025 trade reports for 420A and 452A. The four-hour writing time and the 70 per cent pass mark are the Red Seal Exam Preparation Guide's. If the Red Seal Program changes a breakdown, its page is the final word. If you find one of ours out of date, tell us.
Related: Ironworker Red Seal practice exam · Free Ironworker Red Seal practice questions · How many questions are on the Red Seal exam · Red Seal exam pass mark · Red Seal exam day · Red Seal exam fees by province · All guides
17Practice for this exam
TicketPrep's Ironworker practice tests cover all three exams. Pick Generalist, Structural/Ornamental or Reinforcing and you practise that exam's blocks at its own weighting, and every answer is explained, all four options. You can try five sample questions with no account.
Ten free questions per trade, no account: free practice questions. How our questions are written and checked: how our questions are made.