The Complete Role of Steel Erection Companies in PEMB Construction

In the construction of pre-engineered metal buildings, the steel erector does far more than simply raise the frame. Here are answers to some frequently asked questions, including the various ways a steel erection company works on a project from beginning to end.

Is a steel erector the same as a general contractor?

A steel erection company may perform as a general contractor or as a subcontractor working with the general contractor.

Is a steel erector the same as a metal building manufacturer?

A steel erection company typically works with a separate metal building manufacturer. The manufacturer makes the building components in a controlled factory setting. The steel erector then brings those components to the jobsite and assembles them. The relationship between these two entities is crucial; a steel erector that has a longstanding relationship with a particular manufacturer will be able to assemble the structure efficiently and quickly with minimum complications.

Does the steel erector participate in the design of a metal building?

Yes. The role of the steel erector in a metal building project begins well before construction starts. Using the design assist approach, the erection company and other contractors will collaborate with the design team to create the building plans. This allows the experts in their various fields to weigh in with suggestions and advice before the plans are finalized. They can correct potential problems before they turn into expensive headaches on the jobsite. To fulfill this role, the steel erection contractor must be skilled in reading and interpreting shop drawings and have enough experience to know where troubles can arise.

Does a steel erector bring in the construction materials?

Yes. The steel erector will typically arrange the transportation of frame members and other components to the jobsite. These include large components such as columns and rafters; also. secondary frame members including purlins, girts, struts, and braces. Wall cladding, roof panels, insulation, and other items are also brought in.

The sequencing of material deliveries is a complex process in itself and is crucial to the timely completion of the project. The main components of a pre-engineered metal building are manufactured offsite and transported to the construction site. Doors, windows, and other trim items may be obtained separately. Space on a jobsite is limited, so bringing materials in too early can needlessly complicate the construction process; bringing materials in too late can compromise the construction timeline.

Does the steel erector work with subcontractors?

Yes. The steel erector will manage the activities of various subcontractors to facilitate a smooth process.

Crane operators are usually needed to unload large frame components and move them from one place to another. When the time comes to hoist the frame elements into place, crane operators are essential.

The steel erector will work with the concrete subcontractor to manage the precise placement and alignment of anchor bolts as the foundation is laid. This phase is crucial to the stability of the entire structure, so it must be done with extreme care.

Subcontractors are often used to install roof and wall panels, as well as floors, doors, and windows.

Inspectors also play an essential role in the erection of a metal building. Engineers may be brought in to inspect the placement of anchor bolts; welding inspectors to verify the structural integrity of welded seams; and safety inspectors make sure all safety protocols are being observed.

Federal regulations and local ordinances typically require certified professionals to be used for specialized tasks such as operating heavy equipment. Steel erection companies that don’t have these professionals on staff can hire them from outside.

What are the steps in the erection of a steel building?

Once the foundation is poured and cured, and the frame members are laid out for convenient crane access, the columns are raised and attached to the anchor bolts. Their height and vertical alignment are set with the use of leveling nuts on the anchor bolts.

The rafters and roof trusses are attached to the columns. Then, secondary frame members including girts, purlins, and braces are installed.

Roof and wall panels are installed next, followed by doors, windows, flashing and other trim items.

What happens after construction of a steel building is completed?

On a pre-engineered metal building, the manufacturer’s representative or an engineer may conduct an inspection to verify that all design specs are complied with. The general contractor may then conduct a final walk through with the project owner to identify any remaining issues.

The final step is an inspection by the local building department. If the structure is found to meet all code requirements, a certificate of occupancy is issued.

Do Steel erectors guarantee their work?

Yes, a reputable steel erection company typically stands behind its work. Metal building warranties generally fall into two categories:

1. Workmanship. This warranty covers labor and installation issues, typically for one to two years, although terms vary among steel erection companies.
2. Materials. This is usually issued by the manufacturer. Frame components are usually covered against structural failures for 20 to 50 years. Roof and wall panels are typically covered against premature rusting, peeling, chalking or fading for periods of 20 to 40 years. Coverage is often prorated according to the age of the structure.