3,200 sq ft · Engineered Kit · Fabricated in Sonora, Mexico
A 40×80 steel building kit stretches the 40 ft clear span to 3,200 sq ft, which is the point where boat, RV and fleet storage start to make sense — long vehicles need the length more than the width. Owners in coastal Baja and the US Southwest often specify a taller 16–18 ft eave here for catamaran masts, lifted trucks or a future mezzanine.
Not sure this is the right footprint? Compare steel building cost by size or see everything a kit includes.
| Footprint | 40 ft × 80 ft |
| Floor area | 3,200 sq ft (297 m²) |
| Eave height options | 14, 16 or 18 ft |
| Frame system | Clear-span rigid frame |
| Bay spacing | 4 bays of 20 ft or 5 bays of 16 ft |
| Roof pitch | 1:12 standard; 2:12 or 3:12 for snow regions |
| Steel | ASTM A572 Gr 50 frames, A653 galvanized secondary, AWS D1.1 welds |
| Panels | 26/24 ga galvanized or painted; insulated sandwich panel optional |
| Approx. steel weight | 13,500–25,000 lb (4.2–7.8 lb/sq ft) |
| Freight to a US site | 1 flatbed |
Weights and truckloads are planning figures for a conventional pre-engineered building; the quote is engineered to your site's wind, snow and seismic loads and your opening layout.
Length is cheap; width is expensive. Adding 20 ft of length adds one more identical bay, while widening the span changes the frame design — which is why 40×80 usually costs less per square foot than 50×60.
Plan door positions before the anchor-bolt plan is issued: framed openings in the sidewall need jamb columns that we detail into the kit.
At this length, wall bracing (X-bracing or portal frames) is required in at least one bay — tell us which bays must stay open for doors so bracing lands elsewhere.
Clear-span rigid frame. Shop-welded, primed, match-marked by erection sequence.
Z/C purlins and girts, bracing, framed openings, roof and wall sheeting, trim and fasteners.
Erection drawings, anchor-bolt plan and the calculation package for your engineer of record to stamp.
FCA plant, delivered at the Nogales border, or DDP to your site. A 40×80 is 1 flatbed.
Project in Sonora or Baja California instead of the US? We deliver the 40×80 turnkey — foundations, erection and finishes — see prefabricated steel warehouses and steel buildings for Baja California.
| Footprint | Area | Typical use | Frame | Freight |
|---|---|---|---|---|
| 30×40 ft | 1,200 sq ft | Workshop or garage | Single clear-span rigid frame | 1 partial flatbed (often combined with another order) |
| 40×60 ft | 2,400 sq ft | Shop or auto workshop | Clear-span rigid frame, tapered | 1 flatbed |
| 40×80 ft (this page) | 3,200 sq ft | Boat and RV storage | Clear-span rigid frame | 1 flatbed |
| 50×100 ft | 5,000 sq ft | Small warehouse or 3PL space | Clear-span rigid frame | 1 full flatbed, occasionally 2 |
| 60×120 ft | 7,200 sq ft | Light manufacturing plant | Clear-span rigid frame | 1 to 2 flatbeds |
| 80×100 ft | 8,000 sq ft | Manufacturing and assembly | Clear-span rigid frame | 2 flatbeds |
| 100×100 ft | 10,000 sq ft | Warehouse and 3PL | Clear-span rigid frame | 2 to 3 flatbeds |
| 100×200 ft | 20,000 sq ft | Distribution center | 2-span modular | 3 to 5 flatbeds |
Closest alternatives to a 40×80: 40×60 (2,400 sq ft) · 50×100 (5,000 sq ft). Custom footprints are quoted the same way — send your dimensions.
Tell us the eave height, doors and delivery city. We reply within 24 business hours and quote FCA, border and DDP side by side within 48 hours.