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STEELBUILDING.COM is your first and only online supplier of pre-engineered steel buildings Photo of Man in Hard Hat Holding Blueprints

Steel Building Frame Specifications

Framing Component Types
STEELBUILDING.COM custom engineers each metal building we sell to produce an efficient and cost-effective design that meets or exceeds the required loads. Based on various design criteria, we may specify framing components made as follows:

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  Built-Up Hot-Rolled Cold Formed
Main frames X X --
Interior columns X X --
Wind columns X -- --
Portal frames -- X --
Roof wind struts -- X --
Endwall frames -- X X
Jambs & headers -- X X
Purlins & girts -- -- X
Eave struts -- -- X
Misc. angles & braces -- -- X

Framing Specifications
Unless otherwise noted, the following specifications apply:

Built-Up Plate
  • All components made from high-quality first-run steel
  • Red-oxide primer is baked on after welding
  • Tensile strength of web plate is 46,000 psi
  • Tensile strength of flange plate is 55,000 psi
Hot Rolled
  • All components made from high-quality first-run steel
  • Red-oxide primer is baked on after forming
  • Tensile strength is 50,000 psi
Cold Formed
  • All components made from high-quality first-run steel
  • Coils pre-coated with red-oxide primer before fabrication
  • Tensile strength is 57,000 psi
  • Coil thickness ranges between 16 and 12 gauge
  • Web depths are 8", 10", and 12"

Primed Versus Galvanized Components
Despite some exaggerated claims to the contrary, steel that is protected by red-oxide primer is a better product than galvanized steel for the vast majority of builders. That is why "red iron" is used in most commercial construction -- from sheds to skyscrapers. Galvanizing may be useful in extraordinarily corrosive environments (chemical plants for example), but it can cause more problems than it solves in normal circumstances. It is expensive, and it turns a highly-versatile metal into a very unforgiving material. Galvanized steel cannot be painted, it cannot be bent without cracking the finish, and it cannot be welded without producing deadly fumes, not to mention a very ugly scar in the metal. It is also extremely abrasive and must be handled with heavy gloves. Though it is resistant to red rust, galvanized steel will develop white rust with prolonged exposure to moisture.

The water-based, environmentally friendly red-oxide primer is designed to protect the steel before it is erected. When properly applied, it holds up against all but the worst abuse (like allowing water to pool for weeks on un-erected parts). Some manufacturers just spray-paint manufactured components, but STEELBUILDING.COM's cold-formed steel is always fully prepped and primed before being fabricated, and the red-oxide coat is baked on our frames. As a result, any exposed red iron inside your building will look good for years, and you can finish it out to look even better.

A 30x75x12 with 3:12 pitch; Light Stone walls and Fern Green roof
A 30x75x12 with 3:12 pitch; Light Stone walls and Fern Green roof

A 30x50x12 with 2:12 pitch in all Ash Gray
A 30x50x12 with 2:12 pitch in all Ash Gray

We pre-paint our coils before fabrication
We pre-paint our coils before fabrication

Erecting the frames

One of our frameshops

2612 Gribble | North Little Rock, AR 72114 | 800.945.6572 |

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