Building Sizes
80 ft Wide Steel Buildings
Span
What a 80 ft span decides
Everything indexed here shares one number: a 80 ft span. That single dimension sets the frame this platform's 80 ft footprints are all planned around, and the pages below vary only in how far that frame is repeated.
Eighty feet supports two independent working paths across the same floor, or one path with substantial fixed use on both sides of it.
Interior planning at this width is closer to site planning: zones have their own approaches, and the interaction between them is designed rather than incidental.
At this width the span dominates the structure. Frame depth, foundation reactions and the clearance left under the rafter all follow from it, and the building is normally being specified because something genuinely has to cross that distance uninterrupted.
A wide clear span used for warehouses and industrial buildings.
The span commentary above is this platform's own planning guidance. It is not an engineered limit and states no achievable clear span, which is an output of the manufacturer's engineering for a specific building and site.
Framing
What stays fixed and what changes as length grows
The decision is how the roof and the floor are drained and crossed, because at this span the distance from the middle of the building to any wall is itself an operating factor.
Endwalls do not repeat: there are always two of them regardless of length, which is why the shortest footprints at this width carry proportionally more endwall per square foot than the longest.
Interior fit-out at this span is planned across the width first. What can sit against each sidewall, and what has to stay clear down the middle, is settled by the 80 ft dimension long before the length is chosen.
It is the wrong answer where a second, narrower building would serve the second use better and could be sited where that use actually happens.
On a nominal 25 ft bay module the recorded lengths correspond to roughly 3 to 8 bays; the real module is set by the manufacturer's engineering, and the count is shown here only to make the length steps legible.
Nothing in this section states a member size, a bay spacing or a reaction. Those are produced by the manufacturer's engineering for the actual building and its site loads.
Zoning
Arranging the interior across 80 ft
Zoning at 80 ft is a subtraction problem: take the route out of the span first, then arrange whatever remains. The plan is read as zones with a designed circulation network; a single aisle cannot serve the span, and turning space at each end has to be part of the layout rather than left over from it.
At a fixed 80 ft span the frame's cross-section is repeated down the building. Adding length adds frames along the bay module rather than changing what each frame has to do, which is why the length decision is largely a question of how many bays are wanted and where the openings fall relative to them.
Proportion moves with length too — from 1.00:1 to 2.50:1 against the 80 ft span — which is what decides whether the building reads as a square working box or as a run of bays.
Lengths
Lengths recorded at 80 ft wide
Footprints recorded at 80 ft wide, with area and perimeter computed from the stored dimensions
| 80x80 | 6,400 sq ftperimeter 320 ft |
|---|---|
| 80x100 | 8,000 sq ftperimeter 360 ft |
| 80x120 | 9,600 sq ftperimeter 400 ft |
| 80x150 | 12,000 sq ftperimeter 460 ft |
| 80x200 | 16,000 sq ftperimeter 560 ft |
Each additional foot of length at this span adds 80 sq ft of floor and 2 ft of perimeter, so the recorded footprints move from 6,400 sq ft to 16,000 sq ft without the frame cross-section changing once.
Endwall accounts for about 50% of the wall line on the 80x80 and about 29% on the 80x200: the two endwalls are a fixed cost at this width, and only length dilutes them.
All areas and perimeters are derived from the stored record for each footprint; no external source contributes a number to this table.
Comparison
Widths either side of this span
The realistic alternative to 80 ft is rarely 60 ft; it is usually two buildings, and that comparison is about site layout rather than structure.
Compare widths by what has to be redesigned, not by square footage. Two footprints of similar area at different spans behave nothing alike once the interior is arranged.
- 60 ft wide — 6 recorded footprints, 5 of them at a length also recorded at 80 ft.
- 100 ft wide — 5 recorded footprints, 4 of them at a length also recorded at 80 ft.
- 12 ft Wide Steel Buildings — 12 ft span
- 16 ft Wide Steel Buildings — 16 ft span
- 20 ft Wide Steel Buildings — 20 ft span
- 24 ft Wide Steel Buildings — 24 ft span
- 30 ft Wide Steel Buildings — 30 ft span
- 36 ft Wide Steel Buildings — 36 ft span
- 40 ft Wide Steel Buildings — 40 ft span
- 50 ft Wide Steel Buildings — 50 ft span
- 60 ft Wide Steel Buildings — 60 ft span
- 100 ft Wide Steel Buildings — 100 ft span
- 120 ft Wide Steel Buildings — 120 ft span
FAQ
Questions about 80 ft wide buildings
When the two uses genuinely share movement. When they do not, two buildings give each use its own approach, its own doors and its own future.
80 sq ft per foot of length, by definition. That is arithmetic on the stored width, and it is the reason length is the least expensive way to buy floor area once the span is fixed.
Some, and the amount is an engineering output rather than a published figure. The frame that crosses 80 ft sits below the eave line, so the clear height under it is always less than the recorded eave height for the footprint.
80, 100, 120, 150, 200 feet, as curated footprints in this platform's size database. A manufacturer can build to other lengths on its own module; these are the footprints this platform computes and compares.
Methodology
Basis for this page
Sources and methodology
Find Steel Buildings dimensional records
Find Steel Buildings · Primary platform dataset · Tier 1 — code authority, standards body, primary dataset or manufacturer engineering
Supports: Stored nominal width, length, eave height, roof pitch and slab thickness for this subject.
International Building Code and International Residential Code
International Code Council · Model code · Tier 1 — code authority, standards body, primary dataset or manufacturer engineering
Supports: The framework of adopted codes and local amendments that decides permitting, separation and opening requirements. Cited as the governing framework, never as a local requirement.
- Dimensional figures: Width, length, eave height, roof pitch and nominal slab thickness come from this platform's stored record for the subject. Floor area, perimeter, wall area, roof area, ridge height and slab volume are computed from those inputs rather than transcribed.
- Length progression: The depth list, areas and proportions are arithmetic on stored records for 80-foot-wide footprints. No figure originates from a manufacturer, supplier or third-party dataset.
- Width comparison: Comparisons against neighbouring spans are computed from matched stored lengths only, and report area difference and nothing else.
- Allocation and layout models: Layout splits are arithmetic on the stored footprint, published as example allocation models. They are not survey findings and do not describe what buyers most often choose.
- Clearance and opening guidance: Clearance and opening statements are planning guidance. Final dimensions depend on the selected door system, header detail and the manufacturer's engineering for the building.
Methodology notes
- Prices: No price figure appears on this page. Cost data is published on this platform only with a documented inclusion basis, a collection date and a named source.
Width data
The 80 ft width in numbers
Everything the platform records at a 80 ft span, computed from stored dimensions
| Span | 80 ftfixed by the frame, unchanged by length |
|---|---|
| Recorded depths | 5 (80–200 ft)curated footprints held at this width |
| Smallest footprint | 80x80 — 6,400 sq ftcomputed from the stored record |
| Largest footprint | 80x200 — 16,000 sq ftcomputed from the stored record |
| Area range | 6,400–16,000 sq ft9,600 sq ft between the extremes |
| Floor per foot of length | 80 sq ftarithmetic consequence of the span |
| Perimeter per foot of length | 2 fttwo sidewalls, unchanged by span |
| Nearest recorded widths | 60 ft and 100 ftadjacent spans in the platform's size records |
Two of those figures are worth reading together. Each foot of length at this span adds exactly 80 sq ft of floor and 2 ft of perimeter, so the ratio of enclosed floor to grade detailing improves as the building gets longer — at a rate that belongs to this width alone.
Matched-length comparison against the nearest recorded widths
| This width | Adjacent width | Area difference | Percentage |
|---|---|---|---|
| 80x80 | 60x80 | −1,600 sq ft | −25% |
| 80x100 | 60x100 | −2,000 sq ft | −25% |
| 80x120 | 60x120 | −2,400 sq ft | −25% |
| 80x150 | 60x150 | −3,000 sq ft | −25% |
| 80x200 | 60x200 | −4,000 sq ft | −25% |
| 80x100 | 100x100 | +2,000 sq ft | +25% |
| 80x120 | 100x120 | +2,400 sq ft | +25% |
| 80x150 | 100x150 | +3,000 sq ft | +25% |
Only lengths recorded at both widths are compared. Differences are arithmetic on stored dimensions and imply no structural or cost comparison.
These figures are arithmetic on this platform's own size records. Nothing here is transcribed from a manufacturer, and nothing here states a load, a span capacity or a price.
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