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2026 Statistics

Key Facts: NCCER Ironworker Exam

3-4 Years

Apprenticeship Duration

DOL registered apprenticeship

$59,360

Median Annual Wage

BLS May 2023 (structural iron/steelworkers)

15 ft

Fall Protection Trigger

OSHA Subpart R (Steel Erection)

70%

Passing Score

NCCER assessment standard

50 States

Credential Portability

NCCER Registry nationwide

10,100/yr

Annual Openings

BLS projections through 2032

NCCER Ironworking is a multi-level curriculum aligned with DOL apprenticeship standards covering 6,000-8,000 hours of on-the-job training. The Bureau of Labor Statistics reports a median annual wage of $59,360 for structural iron and steelworkers (May 2023), with projected 1% job growth through 2032. The trade is divided into structural ironworkers (steel erection), reinforcing ironworkers (rebar), and ornamental ironworkers (architectural metalwork). NCCER credentials are portable across all 50 states.

About the NCCER Ironworker Exam

The NCCER Ironworking certification validates knowledge and skills in structural steel erection, reinforcing steel (rebar) placement, welding, rigging, ornamental iron fabrication and installation, and precast concrete erection. The program aligns with DOL-registered apprenticeship standards for both structural and reinforcing ironworkers.

Assessment

100 multiple-choice questions covering all levels of the NCCER Ironworking curriculum

Time Limit

2 hours

Passing Score

70%

Exam Fee

$150-300 (varies by training provider) (NCCER (administered through NCCER-accredited training programs and DOL apprenticeship sponsors))

NCCER Ironworker Exam Content Outline

30%

Structural Steel Erection

Steel grades, W-shapes, bolt connections, moment and shear connections, column erection, plumbing, metal decking, and erection sequence.

20%

Reinforcing Steel

Rebar sizes, grades, placement, concrete cover, lap splices, hooks, stirrups, bar bending, tie wire, and ACI 318 requirements.

15%

Welding

SMAW, fillet welds, CJP welds, weld symbols, weld defects, inspection methods, AWS D1.1, and welding safety.

15%

Rigging

Sling types, hitch configurations, crane signals, load charts, lift planning, spreader bars, and rigging hardware.

10%

Ornamental Iron and Precast Concrete

Ornamental railings, gates, galvanizing, expansion anchors, precast panel erection, tilt-up construction, and temporary bracing.

10%

Blueprint Reading and Safety

Erection drawings, connection details, bar schedules, welding symbols, OSHA Subpart R, fall protection, and CDZ requirements.

How to Pass the NCCER Ironworker Exam

What You Need to Know

  • Passing score: 70%
  • Assessment: 100 multiple-choice questions covering all levels of the NCCER Ironworking curriculum
  • Time limit: 2 hours
  • Exam fee: $150-300 (varies by training provider)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

NCCER Ironworker Study Tips from Top Performers

1Master the rebar sizing system: bar number × 1/8 inch = diameter. Know common sizes #3 through #11 by heart.
2Understand the difference between shear connections (vertical load only, allows rotation) and moment connections (rigid, resists rotation and bending).
3Learn the OSHA steel erection rules: 15-foot fall protection trigger, minimum 2 bolts before crane release, 50% maximum drift pin usage, and CDZ requirements.
4Memorize concrete cover requirements: 3 inches for concrete cast against earth, 1.5 inches for formed surfaces exposed to weather, 3/4 inch for interior members.
5Know your welding fundamentals: fillet welds vs. CJP welds, the purpose of backing bars, and how to read basic welding symbols.
6Study rigging hardware: shackle types, sling capacity derating by angle, the 'never saddle a dead horse' rule for wire rope clips.
7Understand precast concrete erection: lifting inserts, temporary bracing, embed plates, and the struck-by hazards unique to precast work.
8Review structural bolt specifications: A325 (120 ksi) vs. A490 (150 ksi), turn-of-nut method, and DTI washer usage.

Frequently Asked Questions

What types of ironworkers are there?

There are three main specializations: structural ironworkers (erect structural steel frames for buildings and bridges), reinforcing ironworkers (place reinforcing steel/rebar in concrete structures), and ornamental ironworkers (fabricate and install architectural metalwork like railings, stairs, and curtain walls). Many ironworkers cross-train in multiple areas.

How long is the NCCER Ironworker apprenticeship?

A typical NCCER-aligned ironworker apprenticeship takes 3-4 years, combining 6,000-8,000 hours of on-the-job training with related classroom instruction. The program progresses through multiple NCCER levels covering increasing complexity of ironworking skills.

What is the OSHA fall protection height for ironworkers?

OSHA Subpart R (Steel Erection) requires fall protection at 15 feet for ironworkers during steel erection, which differs from the general construction standard of 6 feet. Connectors (workers making initial connections) may work up to 30 feet (two stories) without conventional fall protection under specific conditions outlined in the standard.

What welding certification do ironworkers need?

Ironworkers who perform structural welding must be qualified per AWS D1.1. This requires passing performance qualification tests (bend tests and/or visual examination) in the positions and processes they will use on the job. Separate welding certifications are needed for reinforcing bar welding (AWS D1.4) if applicable.

What is the job outlook for ironworkers?

The BLS projects about 1% growth for structural iron and steelworkers through 2032, with approximately 10,100 openings per year due to retirements and turnover. The trade's physically demanding nature and height requirements create consistent openings. Prevailing wage projects and union ironworkers often earn significantly above the median.

What rebar sizes should I know for the exam?

Know the sizing system: the bar number equals its diameter in eighths of an inch. Key sizes: #3 (3/8"), #4 (1/2"), #5 (5/8"), #6 (3/4"), #7 (7/8"), #8 (1"), #9 (1-1/8"), #10 (1-1/4"), #11 (1-3/8"). Grade 60 (60 ksi yield strength) is the most commonly specified grade.

Do NCCER Ironworker credentials transfer between employers and states?

Yes. NCCER credentials are registered in the national NCCER Registry and recognized by employers across all 50 states. This portability is especially valuable for ironworkers who frequently travel between project sites in different states and work for different contractors.