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Class Code Information


Iron or Steel Erection – Frame Structures – Not Over Two Stories in Height – All Operations to Completion

Not available for division of payroll with Code 5040 “Iron or Steel Erection – Frame  Structures – All Operations to Completion,” at the same job or location.


Code 5059 applies to employers engaged in the erection of iron or steel frame structures, that are two stories or less, including assembling or fabricating at the job site. It includes the raising of the structural members and securing by bolting, welding, or riveting. Specialist contractors engaged in connecting bar joists are also assigned to this classification.

Welding in connection with the operations covered is to be included under this classification when performed by iron or steel erection contractors who set in place the members to be welded.

Assignment by Analogy

•  Residential construction – iron or steel framing – two stories or less
•  Swimming pool construction – iron or steel

Operations to be Separately Rated

  1. Erection:
    1. Or construction of iron or steel in connection with frame structures three stories or more.  Refer to Code 5040 “Iron or Steel Erection – Frame Structures – All Operations to Completion.”
    2. Iron or steel elevated monorail systems.  Refer to Code 5057 “Iron or Steel Erection – NOC – All Operations to Completion.”
  2. Excavating for swimming pools. Refer to Code 6217 “Excavation – NOC – All Operations to Completion & Drivers.”

  3. Swimming pool construction not iron or steel. Refer to Code 5223 “Swimming Pool Construction – Not Iron or Steel – All Operations to Completion & Drivers.”

  4. The placing of reinforcing steel in connection with concrete work.  Assign the appropriate concrete construction classification.

  5.  Welding by contractors who only perform welding.  Refer to Code 3365 “Welding or Cutting – NOC – All Operations to Completion & Drivers.”

  6. Production shop welding.  Assign the appropriate manufacturing classification.

Industry Group