Custom design matters in a steel building because the structure is engineered around your use, your site and your openings. A design that fits the clear span, door sizes, foundation, drainage, insulation and utilities you actually need is easier to compare between proposals and less likely to need changes after fabrication begins. This article lists the planning items that make steel-building proposals comparable.
Frueh Construction is a general contractor in Harvey, ND, serving central North Dakota and South Dakota. It builds steel buildings and works with each customer on the design, and it can handle turnkey projects by coordinating trades such as electricians and plumbers. You can reach the company at 701-693-5765 to discuss a project.
What Custom Design Means
A custom steel building is designed for a specific use and site, not picked from a fixed list of sizes. The customer and the contractor settle the use, dimensions, openings and finishes, and the project engineering identifies the applicable site loads and required structural details. Custom design is most useful when the building has unusual needs, such as very wide doors, a long clear span, mixed uses under one roof or a layout that must connect to existing buildings.
Planning Checklist for a Steel Building
Use this checklist to settle the key decisions before fabrication:
| Item | What to decide | Why it matters |
|---|---|---|
| Use and layout | What the building will do: storage, shop, equipment, retail or commercial space, and how people and vehicles move through it. | Use drives every other dimension and detail. |
| Clear span | The width that must stay free of interior columns, based on equipment, racking or work areas. | Clear span affects the frame design and how much of the floor is usable. |
| Bay spacing | How far apart the frame lines are, and where doors, lean-tos or future extensions could attach. | Bay layout sets where openings can go and how the building can be extended. |
| Door openings | Number, width and height of overhead, slider or bifold doors, and their locations. | Large openings affect framing and headers, so they belong in the first design. |
| Foundation | The foundation and slab the engineer specifies for the soil and loads, and who builds them. | The foundation has to match the engineered building and the site. |
| Site drainage | Grade, where water runs, and how it will leave the pad. | Water at the base of the building causes long-term problems. |
| Engineering loads | The snow, wind and use loads the engineer designs for at your location. | These come from the engineer and local requirements, not from a general rule. |
| Insulation and condensation | Whether the building will be heated or cooled, how it will be insulated and ventilated, and where moisture could form. | Steel surfaces can collect condensation, so insulation and ventilation are planned with the building. |
| Utilities | Electrical service, water, drains, lighting, heat and any equipment that needs power. | Utilities are easiest to place before walls and floors are finished. |
| Construction access | How trucks, cranes and materials reach the site, and where they can be staged. | Access affects scheduling and how the building is erected. |
Shell Only or Turnkey?
Two steel-building proposals can describe very different amounts of work. A shell-only proposal generally covers the structural frame and building envelope, with exact inclusions stated in writing. A turnkey proposal can coordinate foundation and slab work, doors, insulation, utilities and finishes, but only the items expressly included in its written scope are covered. Neither is automatically better, but the price is only comparable when the scope matches. Ask each bidder to list what is included and excluded, who prepares the site, who handles permits and who coordinates the trades.
Decisions the Owner Makes Before Fabrication
Some choices are hard to change once steel is fabricated. Confirm the use, dimensions, door sizes and locations, foundation plan, utilities and any planned extension in writing before the order is released. Decide who will approve the drawings, and ask what changes are possible after approval and what they would involve.
Questions to Ask Each Bidder
- What clear span, bay spacing and door sizes does the design include?
- Who provides the engineering and drawings, and what loads are used for my site?
- What is included in the price, and what is excluded?
- Who is responsible for the foundation, drainage, utilities and permits?
- What is the schedule, and what do you need from me before work begins?
Asking every bidder the same questions makes the proposals easier to compare than the price alone.
How Design Decisions Affect Fabrication and Erection
Steel building components may be fabricated for a particular frame layout. A late change to an overhead door, column line or roof height may therefore affect more than the wall where it appears: the frame, bracing, foundations and adjacent cladding details may also need review. Confirm who prepares the design drawings, how the owner approves revisions and which party reviews changes affecting structural design. A drawing approval is an important milestone, not proof that permits, site preparation or utilities have all been addressed.
On a site with existing structures, the project plan should describe clearances for equipment, drainage between buildings and whether planned access stays open during erection. For an agricultural shop or equipment building, the turning area outside a tall door may matter as much as the opening itself. These operational details should appear on the site plan, not remain unstated assumptions after fabrication has been authorized.
What Must Match Between Competing Proposals?
Before comparing totals, check that each proposal uses the same building footprint, usable clear height, roof configuration, door schedule and intended occupancy. A proposal with narrower doors, more interior columns or fewer foundation items is a different scope, even when the overall exterior dimensions match. Distinguish items priced in the base bid from allowances, alternates and owner-provided work. In particular, a building package price may exclude excavation, concrete, electrical service, plumbing or interior finish work.
Ask who supplies the site survey and soil information, who coordinates required approvals, which drawings the owner receives and how construction changes are authorized. Confirm whether erection equipment, delivery access, temporary storage, weather delays and final site cleanup are included. These questions do not predict project cost, but they show whether bids cover the same work and where extra decisions may remain.
Doors, Floors and Insulation
Doors, the slab and insulation are often handled by different trades, so plan them together. Frueh Construction provides door options, provides concrete work including floors and foundations, and offers interior spray foam insulation for commercial, agricultural and residential buildings. Insulation and ventilation help manage condensation, but how much depends on the building and how it is used, so ask for a plan specific to your building.
Steel or Post-Frame?
If your project could use either construction method, compare them on your own requirements. Frueh Construction also builds pole barns and post-frame buildings, so you can ask for both options and see how the frame, foundation and door needs differ for your site.
Working With Frueh Construction
Frueh Construction has operated since 2014, and owner Cody Frueh works directly with customers on building design. The company describes its service as selling, designing and constructing the buildings it provides. You can learn more about the company or contact Frueh Construction at 701-693-5765 with your intended use, rough dimensions and site details.
Frequently Asked Questions
Why does custom design matter for a steel building?
It lets the structure be engineered around your use, openings and site, which makes proposals easier to compare and reduces changes later.
What is the difference between shell-only and turnkey?
Shell-only generally addresses the frame and envelope. Turnkey can coordinate foundation, doors, insulation and utilities, but actual inclusions need to be specified.
Who determines the loads a steel building is designed for?
A qualified project designer or engineer establishes applicable loads using the site and governing requirements; the proposal should identify the design basis.
What should I decide before fabrication?
The use, dimensions, door sizes and locations, foundation plan, utilities and any planned extension.