What Is Included in a PEMB Erection Scope?

A pre-engineered metal building (PEMB) arrives as a manufacturer-designed system: engineered primary and secondary steel, panels, and trim, all fabricated to fit together. Erection is the work of assembling that system on the foundation. A full erection scope typically addresses:

• Primary framing — rigid frames, columns, rafters and endwall framing, set, plumbed, lined and anchored.
• Secondary steel — purlins, girts and eave struts, installed to the manufacturer's spacing and connection details.
• Bracing — rod bracing, cable bracing or other systems shown on the erection drawings, to make the frame stable as it goes up.
• Roof and wall panels — sheeting the structure where panel installation is part of the erector's scope.
• Trim and flashing — rake, corner, eave and other trim pieces that close the building envelope.
• Gutters and downspouts — where included in the contract.
• Insulation — blanket, liner systems or other insulation where it is specified as erector-installed.
• Framed openings and accessories — framed openings for doors and windows, louvers, and other accessories as scoped.

The phrase “where included” appears a lot in that list for a reason: the same building can be bid as bare-frame erection, frame-and-sheet, or a complete weather-tight package. Read the inclusions line, not the job title.

A common source of confusion is that a PEMB project involves two separate transactions:

• The building package — the manufactured materials themselves: frames, secondary steel, panels, trim, fasteners and closure strips. This is supplied by the building manufacturer or a dealer, usually with a price per the manufacturer's drawings.
• The erection labor — the crew, equipment and supervision that assemble those materials. This is what an erection contractor like us prices.

Some erectors also supply building packages; others erect only. Either way, make sure each bid states clearly whether it includes material, labor, or both — comparing a materials-included price against a labor-only price is the fastest way to end up with a change order. We focus on the erection side and describe that work on our pre-engineered metal building erection page.

There is no industry-wide default scope for PEMB erection. What is in or out depends on:

• The contract and its written inclusions and exclusions — the single most important document on bid day.
• The manufacturer's erection drawings and anchor bolt plan, which define how the system must be assembled.
• The project specifications, including any division covering metal building systems and metal panels.
• The project itself — a hangar, a retail box, a self-storage row and a church sanctuary all sequence differently.

When two erection bids differ sharply, the difference is usually scope, not price. One erector may be including trim and gutters, another assuming the GC's other trades will handle them, and a third bidding frame erection only.

The following items frequently fall outside an erector's scope, but every one of them can be included or excluded depending on the contract. Treat this as a checklist of things to confirm in writing, not a list of what any particular bid excludes:

• Foundations, slab, and anchor bolts — including furnishing or setting anchor bolts, and verifying their placement.
• Sitework — grading, access roads, paving, drainage and landscaping.
• Electrical, plumbing, HVAC and fire protection — the building's mechanical and electrical trades.
• Doors and windows — whether they are supplied, installed, or both, and by whom.
• Cranes and lifting equipment — who furnishes the crane, and what lift capacity the site allows.
• Unloading and staging — whether the erector unloads delivery trucks and provides laydown space, or material is staged by others.
• Permits, fees and inspections — which party pulls them.
• Insulation, gutters, downspouts, trim and accessories — as noted above, these move in and out of scope from contract to contract.
• Concrete curbs, internals floors, and finishing work inside the shell.

The remedy is simple: ask each bidder to state, line by line, which of these are in their price. A bid that answers the question is worth more than one that is a few dollars lower.

Both involve setting steel safely and accurately, but the work is organized differently:

• Design source: a PEMB is engineered by the building manufacturer as a system, with erection drawings produced for that specific building. Conventional structural steel is designed by the project's structural engineer and fabricated to the contract drawings.
• Connection type: PEMB systems rely heavily on bolted connections and lighter, high-strength members sized to the manufacturer's system. Conventional steel includes heavier shapes and a wider mix of welded and bolted field conditions.
• Sequence: PEMB erection follows the manufacturer's prescribed assembly order — frames, bracing, secondary steel, then sheeting. Conventional erection follows the structural drawings and the project's erection plan.
• Crew mix: PEMB crews often combine steel setting with panel installation; conventional crews focus on steel setting, with other trades following.

Many projects include both — a PEMB shell with conventional structural elements such as mezzanines, platforms, canopies or supporting framing. We perform structural steel erection alongside PEMB work, and mixed-scope projects are normal for us.

• What exactly is included: frames only, frame-and-sheet, or a complete weather-tight package.
• Whether panels, trim, insulation, gutters and downspouts are in the erector's price — and which specific products and gauges, per the specs.
• Framed openings: who frames them, who supplies the doors and windows, and who installs them.
• Crane responsibility, site access, and staging/unloading responsibility.
• Whether anchor bolt verification and any manufacturer-required checks are in scope.
• That every bidder priced the same drawing revision and the same addenda.
• The written exclusions — read them as carefully as the inclusions.

For a broader checklist of what to send with your bid request, see our companion article, What General Contractors Should Send a Steel Erector for an Accurate Bid.

We erect pre-engineered metal buildings across retail, self-storage, church, aviation, agricultural and commercial project types, and we review the manufacturer's drawings and the contract scope before we price. If the documents leave an inclusion ambiguous, we ask — because the difference between a weather-tight building and a bare frame is not something either party should discover after mobilization. You can see representative projects in our project portfolio, and our metal roofing and wall systems page covers the panel side of the envelope. For your prequalification file, our capability statement is available to download.