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Structural Iron and Steel Workers - 47-2221.00

O*NET-SOC Description

Raise, place, and unite iron or steel girders, columns, and other structural members to form completed structures or structural frameworks. May erect metal storage tanks and assemble prefabricated metal buildings.

Sample of Reported Job Titles

  • Fitter
  • Iron Worker
  • Ironworker
  • Steel Fabricator
  • Steel Worker
  • Structural Steel Erector
  • Tower Hand

SOC Occupation Groups

47-0000 Construction and Extraction Occupations
47-2000 Construction Trades Workers
47-2220 Structural Iron and Steel Workers
47-2221.00 Structural Iron and Steel Workers

Related Occupations


  • Assemble hoisting equipment or rigging, such as cables, pulleys, or hooks, to move heavy equipment or materials.
  • Bolt aligned structural steel members in position for permanent riveting, bolting, or welding into place.
  • Catch hot rivets in buckets and insert rivets in holes, using tongs.
  • Connect columns, beams, and girders with bolts, following blueprints and instructions from supervisors.
  • Cut, bend, or weld steel pieces, using metal shears, torches, or welding equipment.
  • Dismantle structures or equipment.
  • Drive drift pins through rivet holes to align rivet holes in structural steel members with corresponding holes in previously placed members.
  • Erect metal or precast concrete components for structures, such as buildings, bridges, dams, towers, storage tanks, fences, or highway guard rails.
  • Fabricate metal parts, such as steel frames, columns, beams, or girders, according to blueprints or instructions from supervisors.
  • Fasten structural steel members to hoist cables, using chains, cables, or rope.
  • Force structural steel members into final positions, using turnbuckles, crowbars, jacks, or hand tools.
  • Hoist steel beams, girders, or columns into place, using cranes or signaling hoisting equipment operators to lift and position structural steel members.
  • Hold rivets while riveters use air hammers to form heads on rivets.
  • Insert sealing strips, wiring, insulating material, ladders, flanges, gauges, or valves, depending on types of structures being assembled.
  • Place blocks under reinforcing bars used to reinforce floors.
  • Pull, push, or pry structural steel members into approximate positions for bolting into place.
  • Read specifications or blueprints to determine the locations, quantities, or sizes of materials required.
  • Ride on girders or other structural steel members to position them, or use rope to guide them into position.
  • Unload and position prefabricated steel units for hoisting, as needed.
  • Verify vertical and horizontal alignment of structural steel members, using plumb bobs, laser equipment, transits, or levels.

Detailed Work Activities

  • Assemble temporary equipment or structures.
  • Assist skilled construction or extraction personnel.
  • Cut metal components for installation.
  • Dismantle equipment or temporary structures.
  • Fabricate parts or components.
  • Install electrical components, equipment, or systems.
  • Install gauges or controls.
  • Install insulation in equipment or structures.
  • Install metal structural components.
  • Load or unload materials used in construction or extraction.
  • Operate cranes, hoists, or other moving or lifting equipment.
  • Position safety or support equipment.
  • Position structural components.
  • Review blueprints or specifications to determine work requirements.
  • Rivet metal components.
  • Signal equipment operators to indicate proper equipment positioning.
  • Verify alignment of structures or equipment.
  • Weld metal components.

Military Crosswalk Titles

  • Advanced Steelworker (Navy - Enlisted)
  • Aeronautical Welder (Navy - Enlisted)
  • Aircraft Welder (Marine Corps - Enlisted)
  • Cannon Crewmember (Army - Enlisted)
  • Carpentry and Masonry Specialist (Army - Enlisted)
  • Cavalry Scout (Army - Enlisted)
  • Combat Engineer (Army - Enlisted)
  • Construction Engineering Technician (Army - Warrant Officer only)
  • Conversion NEC SW Steelworker Basic (Navy - Enlisted)
  • Damage Controlman (Coast Guard - Enlisted)
  • Heavy Repair Superintendent (Air Force - Enlisted)
  • Hull Systems Maintainer (Navy - Enlisted)
  • Hull Systems Technician (Navy - Enlisted)
  • Infantryman (Army - Enlisted)
  • Marine Safety Specialist Engineer (Coast Guard - Warrant Officer only)
  • Master Chief Constructionman (Navy - Enlisted)
  • Material Maintenance Specialty (Coast Guard - Warrant Officer only)
  • Metal Worker (Marine Corps - Enlisted)
  • Ship Survivability Systems Maintainer (Navy - Enlisted)
  • Ship Survivability Systems Technician (Navy - Enlisted)
  • Steel Worker (Navy - Enlisted)
  • Steelworker (BL-0) (Navy - Enlisted)
  • Steelworker (BL-1) (Navy - Enlisted)
  • Steelworker (Coast Guard - Enlisted)
  • Steelworker (Navy - Enlisted)
  • Steelworker - Erector (Coast Guard - Enlisted)
  • Steelworker - Fabricator (Coast Guard - Enlisted)
  • Structural (Air Force - Enlisted)
  • Structural (Space Force - Enlisted)
  • Structural Apprentice (Air Force - Enlisted)
  • Structural Apprentice (Space Force - Enlisted)
  • Structural Craftsman (Air Force - Enlisted)
  • Structural Helper (Air Force - Enlisted)
  • Structural Helper (Space Force - Enlisted)
  • Structural Journeyman (Air Force - Enlisted)
  • Structural Journeyman (Space Force - Enlisted)
  • Welding Supervisor (Navy - Enlisted)
  • Wheeled Vehicle Mechanic (Army - Enlisted)

Apprenticeship Crosswalk Titles

  • Assembler, Metal Building
  • Structural Steel Worker (Alternate Titles: Ironworker or Structural Ironworker)
  • Tank Setter (Petrol Prod)

DOT Crosswalk Titles

  • Assembler, Metal Building
  • Structural-Steel Worker
  • Structural-Steel-Worker Apprentice
  • Tank Setter