From Wikipedia, the free encyclopedia
  (Redirected from Steel erector)
Jump to navigation Jump to search
Ironworkers Memorial Bridge Vancouver BC.jpg
A bridge like this is a common ironworker job
Occupation type
Activity sectors
CompetenciesHeights, patience, steady hand, ability to read plans, physically strong
Fields of
Construction site
Related jobs
Carpentry, Laborer, Electrician
Two ironworkers at work

An ironworker is the American term for a tradesman who works in the iron working industry. A structural/ornamental ironworker fabricates and erects (or even dismantles) the structural steel framework of pre-engineered metal buildings, single and multi-story buildings, stadiums, arenas, hospitals, towers, wind turbines, and bridges.[1] Ironworkers assemble the structural framework in accordance with engineered drawings.[2] Ironworkers also unload, place and tie reinforcing steel bars (rebar) as well as install post-tensioning systems, both of which give strength to the concrete used in piers, footings, slabs, buildings, and bridges. Ironworkers load, unload, place, and set machinery and equipment as well as operate power hoists, forklifts, and aerial lifts. They unload, place, and fasten metal decking, safety netting, and edge rails to facilitate safe working practices. Ironworkers finish buildings by erecting curtain wall and window wall systems, stairs and handrails, metal doors, and sheeting and elevator fronts. Ironworkers perform all types of industrial maintenance as well.[3]

Historically ironworkers mainly worked with wrought iron or cast iron, but today they utilize many different materials including ferrous and non-ferrous metals, plastics, glass, concrete, and composites.


Practically overnight, bridge carpenters became ironworkers during the 1880s. It was seen as a new, exciting job for pioneers in America, despite its dangerous drawbacks. For about two dollars per day, a worker could risk his life on high structures.[4]

After the industrial revolution, the production of cast iron parts brought about the use of cranes. This heavy equipment was used in the early 1900s to construct high level structures. This new technology brought about a special form of trade workers called ironworkers. They used cranes to lift steel girders into place, and used rivets to connect the girders to the columns of a structure. The mortality rate of men working in this trade was the highest of all trades, and the ironworker could be lucky to go 10 years without a serious or fatal injury.[citation needed]

In the late 19th century, workers formed the International Union of Ironworkers because of concerns they had about safety on-the-job and the lack of protection from employers. The union's first order of business was to give widows of ironworkers $50 to cover the costs of a funeral and to give disabled ironworkers $5 a week to compensate for lost wages. With the increase in benefits from unionization, the Union greatly increased its presence in numbers in the early 1900s. Approximately 10,000 workers were considered Ironworkers through the Union.[4]

In the early 1900s, during the third great immigration wave[5] the Ironworker wage in real 2010 US dollars was $9.50 (2010) to $12 (2010) per hour (40 to 50 cents an hour in 1900). Following the imposition of immigration quotas in 1921[5] wages rose to $17.50 (2010) an hour ($1.37) for a structural ironworker just prior to the Great Depression and the real wage subsequently only dropped 10% to $16.00 (2010) ($1.05) given the deflation during the depression. However, following the wartime destruction of manufacturing complexes - with the exception of North America, 1956 wages for structural, ornamental, and rebar ironworkers rose to $27.30 (2010) an hour ($3.40). By 1970, through the Coldwar buildup, iron worker wages peaked at $44.80 (2010) ($7.97). Then, following the 1965 new immigration policy and the start of the fourth great migration wave [5], wages fell 10% to $40.38 (2010) by 1980 ($15.26), and fell another 20% to $29.90 (2010) per hour ($20.88) by 1990, comparable to the 50's wage rate. With the end of the Cold War buildup in 1991, ironworker rates have since stayed constant and were $29.30 (2010) an hour ($24.15) in 2002.[6] In 2010 the mean wage for Ohio ironworkers, both union and nonunion, is $24.66 per hour; the 75th percentile for the nation is 29.51[7] - likely for the unionized workforce and indicates that for the past 20-years Ironworker wages have been stagnant for various reasons[8] - most prominently the offset in real wages created by debt, today 126% of income compared to 40% in 1952[9] allowing short-term survival on less than the living wage.

About 10% of all ironworkers in NYC are Mohawk Indians, down from about 15% earlier in the 20th century.[10] Ironworkers from this and other Iroquois tribes were involved in building nearly all of the skyscrapers and bridges in New York City, including the Time Warner Center, the Rockefeller Center, the Empire State building, and the Chrysler Building.[10]


There are three main types of ironworks: reinforcing, structural, and ornamental.

Reinforcing ironworker[edit]

A reinforcing (rebar) ironworker, colloquially known as a "Rodbuster", works with reinforcing bars to make structures based on a certain design. Reinforcing ironworkers assemble structures with reinforcing bars by tying the bars together with tie wire. They place the rebar inside of forms, so concrete can be poured over top of them to form a solid structure. When reinforcing floors, concrete blocks are used to raise the rebar off of the deck, so no rebar can be seen underneath of the deck of the floor after the forms are stripped. In addition, ironworkers often have to cut the steel that they have for a job to fit into certain positions. For example, the rebar will have to be cut with a cutting torch, so it can fit around a drain. In some instances, welded wire fabric is used to help strengthen concrete; however, it is difficult to place this fabric in the concrete because it must be placed while the concrete is being poured into the forms.[11]

The average pay for a reinforcing bar ironworker in residential construction was an hourly wage of $23.59 in early 2009 and rebar ironworkers in commercial and industrial construction earn an hourly wage of $39.11.[12]

The typical tools of a reinforcing bar ironworker are pliers, tie wire reel, rod buster bag, and a rebar hook. The main tool of a reinforcing bar ironworker is their work pliers. The pliers cuts soft annealed rebar tie wire and twists the wire into place. The pliers have a hook bend handle, and a spring in between the handles for self-opening of the pliers. The pliers cut ACSR, screws, nails and most hardened wire. Also, the pliers are finished with a black oxide paint to resist rust on the tool. A tie wire reel is a lightweight aluminum alloy mechanism used for dispensing tie wire efficiently. A rod buster bag is a split-leather double bottom pouch used for holding tools while they are not in use. A rebar hook is a hook made of solid steel that has a snap hook in front, and fits onto a tool belt easily.

The British call a reinforcing ironworker a steelfixer. In the United Kingdom and Ireland a steelfixer's main tool is the pincer-like nips.

Structural ironworker[edit]

Before construction can begin, the structural ironworkers put together the cranes that will be used to lift the steel columns, beams, and girders according to structural blueprints. To hoist the steel, structural ironworkers use cables connected to the crane to lift the beams onto the steel columns. A rope called a tagline is attached to the beams so an ironworker can control the beams if necessary. The crane hoists steel into place, and the ironworkers position the beams in place with spud wrenches to align bolt holes. Then, the beams can be bolted to the steel columns. This process is continued until there are no beams or columns left to construct the structure.[13] Structural ironworkers also erect joist girders, bar joists, trusses, and install metal decking.

The average annual income for a structural ironworker in the early 2000s was 15.85 dollars per hour; however, a full-time structural ironworker could make between 30 dollars per hour to 40 dollars per hour depending on the location of the work. [12] Current wages for Local Union #1 Chicago Ironworkers can be found at the Chicago Ironworkers local union website.[14]

The typical structural ironworker tools are the spud wrench, bolt bag, sleever bars, bull pins, drift pins, and beaters. The spud wrench is the most important tool of a structural ironworker because it serves dual purposes. It is a wrench to tighten bolts, and the opposite end of the wrench can be used to align holes of beams with columns. It is made from a steel alloy, and it has a gradual taper to easily align bolt holes on beams. The bolt bag is a heavy canvas bag used for storing bolts and nuts that erect a structure. A sleever bar is a steel alloy bar used to pry on beams to put them in place, when a spud wrench is insufficient. A beater is forged steel head mallet with a lacquered hickory handle for beating a tapered pin or bull pin into the bolt hole to align the others at the beam end or "point" and stuff the rest of the holes. Drift pins have a tapper on both ends and get to be the largest diameter in the center and are used for aligning holes made up of multiple plates.

Although use of fall harnesses has reduced fatalities in this sector over time, structural steel erection remains one of the most dangerous occupations in construction. Workplace accidents claim the lives of approximately 38 out of every 100,000 full-time ironworkers each year.[15]

Ornamental ironworker[edit]

Ornamental ironworkers install metal windows into structures, erect curtain walls and window wall systems that cover the steel, erect metal stairways, cat walks, gratings, ladders, doors of all types, railings, fencing, gates, metal screens, elevator fronts, platforms, and entranceways. A variety of materials are used to make these structures and this type of work is fastened by welding or bolting to the main structure. A common name for an ornamental ironworker is a finisher because they are responsible for finishing the structures after the structural and rebar work is done.[16]

The main wage rate for ornamental ironworkers ranges from $20.89 per hour to $45.00 per hour. The wages are adjusted according to the location of the work and the nature of the work.

The main tool of the ornamental ironworker is an arc welder. According to, welding and burning equipment are considered “tools of the trade.” However, any ironworker must be certified to weld on a project.[16]

See also[edit]


  1. ^ Len F. Webster (1997), The Wiley Dictionary of Civil Engineering and Construction, Wiley-Interscience, ISBN 0471181153
  2. ^ Ironworkers are called “steel erectors" in Australia and New Zealand.[citation needed] Must be a qualified "Dogman" and "Rigger". Does not work with rebar as that is the "Steel Fixer's" job. A dogman or rigger may move the rebar bundles for the steel fixer. A steel fixer fixes steel only. M.Y.H. Bangash (2000), Structural Detailing in Steel, Thomas Telford, ISBN 0727728504
  3. ^ "Careers".
  4. ^ a b "Union History". Ironworker. Ironworkers Union Local 512. 2012. Retrieved May 20, 2013.
  5. ^ a b c "99.03.01: Immigration in the United States".
  6. ^ "Wages". Union Ironworkers Local 55. Archived from the original on 2010-10-15. Retrieved 2010-10-15.
  7. ^ "Structural Iron and Steel Workers".
  8. ^ "The sad but true story of wages in America".
  9. ^ "Private Debt Is Much Higher Now Than During the Great Depression - Thoughts about Gold, Silver, and other stuff".
  10. ^ a b Nessen, Stephen (19 March 2012), Sky Walking: Raising Steel, A Mohawk Ironworker Keeps Tradition Alive, retrieved 2016-10-29
  11. ^ "Structural and Reinforcing Ironworkers". Conley Hall Dillon. Retrieved 2009-04-05.
  12. ^ a b "#382 - REINFORCING-IRON WORKER". Retrieved 2009-04-05.
  13. ^ "Structural and Reinforcing Iron and Metal Workers". Retrieved 2009-04-05.
  14. ^
  15. ^ "The Construction Chart Book: The US Construction Industry and its Workers" (PDF). 6/11/2013. CPWR.
  16. ^ a b "Ornamental Ironworkers". Ironworker. International Association of Bridge, Structural, Ornamental, and Reinforcing Ironworkers. Retrieved 2009-04-05.

External links[edit]