40x70 Premium Building

A 40×70 steel building is usually chosen when operations start to outgrow smaller footprints. The added length lets you separate space instead of stacking everything together — vehicles on one end, work or storage in the middle, and clear access points without constant shuffling. At 12 feet of wall height, there’s enough clearance for equipment movement and roll-up access without pushing into oversized commercial construction.

This layout includes multiple roll-up doors for equipment flow and walk-in doors for everyday entry, so you’re not opening a large door every time someone steps inside. Windows are placed where light is actually useful, helping visibility without eating into wall space. Full insulation and a vertical roof help manage heat and moisture, especially in buildings that stay active year-round.

This size is commonly used for light industrial work, fleet or equipment storage, agricultural operations, or businesses that need defined zones instead of one large open shell. If you’re comparing this to a 40×60 or 40×75, the difference usually comes down to how much separation your workflow needs.

If you want help confirming the layout or door placement before ordering, LongStar Steel can walk through it with you. Call us now to order your custom steel building at direct factory prices.

40×70 Premium Building Specs-

• Overall Size: 40′ W × 70′ L × 12′ H

• Total Covered Area: 2,800 sq. ft.

• Building Type: Fully Enclosed Steel Building

• Roof Style: Vertical Roof

• Roof Pitch: 4/12

• Installation Surface: Concrete

• Certification: Built to local wind and snow code requirements

• Frame: 14-Gauge Galvanized Steel

• Panel Orientation: Vertical Wall Panels

• Ends: Fully Enclosed

• Sides: Fully Enclosed

• Insulation: Full Building Insulation (Therma Guard)

• Roof Color: Burnished Slate (29G – Premium)

• Wall Color: Light Stone (29G – Premium)

• Trim Color: Burnished Slate

• Wainscot: Burnished Slate Steel Panels

Doors & Openings

• Roll-Up Doors:

  • (3) 10′ × 10′ Roll-Up Doors with Chain Hoist

  • Additional framed openings:

    • (2) 15′ × 10′ roll-up frame-outs

    • (1) 36′ × 10′ roll-up frame-out

• Walk-In Doors:

  • (2) 34″ × 80″ Steel Man Doors

• Windows:

  • (6) 24″ × 36″ Steel Windows

• Wind Rating: Up to 130 MPH (code-compliant)

• Snow Load Rating: 35 PSF

• Panel Warranty: 40 Years