Building Types and Use Cases

Every steel building starts with a question: what are you going to do inside it? The answer shapes everything — frame spacing, roof pitch, door placement, foundation design, even insulation. A warehouse that stores pallets has almost nothing in common with a hangar that shelters a Cessna, even if they're the same square footage.

All the building types below are pre-engineered metal buildings (PEMBs). That means the structural steel is designed by an engineer, fabricated in a factory, and shipped to your site ready to bolt together. The differences come down to how the interior space gets used and what features the use case demands.

Warehouses and distribution centers

Warehouses are the bread and butter of the steel building industry. Most run 60 to 150 feet wide, 100 to 400+ feet long, and 20 to 35 feet at the eave. The goal is maximum open floor space for racking, forklifts, and inventory.

Typical features include:

• Dock-high doors: 8x10 or 9x10 overhead doors with dock levelers for truck loading
• Drive-in doors: 12x14 or 14x16 for forklift access from ground level
• Clear span or minimal columns: Interior columns interfere with racking layouts, so most warehouse buyers want the widest clear span they can afford
• Flat or low-slope roofs: 1:12 or 0.5:12 pitch keeps the building compact and reduces exterior wall area
• Insulation: Heated warehouses need R-19+ walls and R-30+ roof. Unheated storage buildings sometimes skip insulation entirely

If you're storing temperature-sensitive goods, you'll also need vapor barriers and possibly climate-controlled zones. That changes the insulation strategy and might add partition walls.

Shops and garages

This is the most common building type for small business owners and property owners. Shops range from 30x40 personal garages to 80x120 commercial repair facilities. Eave heights usually sit between 14 and 20 feet.

What makes a shop different from a warehouse is the work happening inside. Mechanics need overhead cranes. Welders need ventilation. Woodworkers need dust collection. Each trade shapes the building differently.

• Overhead doors: Typically 10x12 to 14x14 — big enough for trucks, equipment, or boats
• Walk doors: At least two for egress, sometimes with windows for natural light
• Office or bathroom space: Most shops include a small framed-in area with climate control, a restroom, and a sink
• Electrical capacity: Welders, compressors, and lifts draw serious amperage. Plan your panel early
• Mezzanine: A popular add-on. A steel mezzanine over the office area creates storage loft space without increasing the building footprint

Shop buildings are where personal preference matters most. Some buyers want wainscot panels for looks. Others want translucent light panels to save on electricity during the day. It's your workspace — build it the way you actually work.

Commercial and retail buildings

Steel buildings aren't just for industrial use. Retail stores, offices, churches, restaurants, and gyms all get built with pre-engineered steel frames. The structural bones are the same. The finish is what changes.

Commercial buildings typically add:

• Exterior finishes: Brick or stone wainscot, stucco, or architectural metal panels to meet local design standards
• Storefront glass: Aluminum-framed window systems for retail frontage
• Interior framing: Light-gauge steel or wood stud walls for offices, restrooms, and tenant spaces
• Parapet walls: These hide the roofline and give the building a flat-roofed commercial appearance
• HVAC integration: Rooftop units with curb openings designed into the roof panels

Width ranges from 40 to 120 feet. Multi-tenant strip buildings might stretch 200+ feet long. Eave heights are usually 16 to 22 feet, depending on whether there's a mezzanine level.

Agricultural buildings

Farms need buildings that work hard and cost as little as possible. Hay barns, equipment storage, livestock shelters, grain storage — steel handles all of it.

Agricultural buildings tend to be simpler than commercial ones. Open-wall designs (no sidewall panels on one or more sides) are common for hay storage and equipment cover. Fully enclosed buildings work for livestock, processing, or workshop space.

• Wide openings: Combines and tractors need 16x16 or 20x16 doors — sometimes larger
• Ventilation: Livestock buildings require ridge vents, wall louvers, or fan systems to control moisture and ammonia
• Corrosion resistance: Agricultural environments are tough on metal. Galvalume panels and proper ventilation help prevent premature rust
• Lean-tos: Adding a lean-to off one side gives you covered outdoor storage without building a second structure

Common sizes run from 40x60 up to 100x200. If you're housing large equipment, plan for at least 18-foot eave height so a combine header clears the door.

Aircraft hangars

Hangars are where clear span matters most. A single-engine Cessna might only need a 50-foot opening. A corporate jet needs 80 to 100 feet. Multi-aircraft hangars for FBOs can push 150 to 200+ feet wide with no interior columns.

That clear span requirement drives engineering decisions more than any other building type. Wider spans mean deeper rafters, heavier columns, and beefier foundations. A 200-foot clear span hangar costs dramatically more per square foot than a 60-foot shop building — not because it's fancier, but because of the sheer amount of steel needed to hold the roof up without posts.

• Bi-fold or hydraulic doors: Hangar doors are specialty items. Bi-fold doors swing up, hydraulic doors lift vertically. Both are expensive but necessary
• Tall eave heights: 20 to 30+ feet depending on aircraft tail height
• Floor loads: Aircraft wheel loads concentrate force on small areas. The slab design must account for this
• Fire suppression: Many jurisdictions require foam suppression systems in hangars

Multi-use buildings

Plenty of buyers need one building to do two or three things. A 60x100 might be half shop and half office. An 80x150 might combine warehouse storage with a retail showroom up front. These are multi-use buildings, and they're more common than pure single-purpose structures.

The trick is planning the layout before the steel gets ordered. Once the frame is engineered, moving a partition wall is easy. But moving a door opening or changing the eave height isn't. Multi-use buildings need extra attention to:

• Zoned insulation: The heated office needs R-19 walls while the unheated storage bay might need nothing
• Separate HVAC: Different zones, different systems. A mini-split for the office, unit heaters for the shop
• Fire separation: Some uses require a rated fire wall between zones (like office vs. storage)
• Future flexibility: Framed openings that can become doors later, or structural capacity for a future mezzanine

If you're not sure exactly how you'll use every square foot, tell your contractor. We can design flexibility into the frame so you're not locked in.