Fabrication vs. Erection: What GCs Should Expect From a Steel Subcontractor

"Fabrication" and "erection" get used interchangeably on site, but they are two different scopes with two different sets of responsibilities. Knowing where one ends and the other begins helps you assemble a cleaner, lower-risk steel package. Here is how a structural steel project actually moves, and what you should expect from your subcontractor at each step.

Fabrication: turning drawings into steel

Under the AISC framework, the fabrication side owns everything from procurement through delivery:

• Ordering material to the correct grades and sizes.

• Erection drawings and shop drawings that translate the design into piece-by-piece instructions. Plan for an approval cycle here. AISC has long recommended roughly two weeks to approve each batch of shop drawings.

• Fabrication and quality control in the shop: cutting, drilling, fitting, welding, and coating, with every member built to spec.

• Delivery sequenced to support the erection plan, not just the order in which pieces come off the line.

A strong fabricator catches problems on paper and in the model, long before steel is cut. That is where your schedule is protected.

Erection: assembling the frame safely

Erection is a separate discipline with its own responsibilities. The erector owns the means, methods, and safety of putting the frame up: preparing the erection plan, receiving and unloading steel, setting and connecting members, and providing the temporary bracing and supports that keep the structure stable until it is complete. This is field work where sequencing, crane logistics, and crew experience decide whether you stay on schedule.

Why a coordinated team matters

When one partner handles both fabrication and erection, the handoffs disappear. Delivery sequencing matches the erection plan, connection details account for how the crew will actually make the lift, and you have one accountable party instead of two trades pointing at each other. That coordination is exactly what keeps RFIs down and the frame topping out on time.

What to expect from us

From the first estimate through the last connection, you should expect complete shop drawings, mill-certified material, a delivery schedule built around your sequence, and field crews who erect safely and on time. That is the standard we hold on every project across metro Atlanta and North Georgia.

Have a project coming up? Start a quote and we will walk the scope with you.