Steel Comparison of Metal Buildings
Comparing the steel that builders use for metal buildings.
Not all metal is created equal. The strength of a steel panel on a metal building is determined by several factors: gauge (thickness), yield strength (hardness), rib style and rib spacing. No factor can stand alone.
FBi chooses to use 29 gauge, heat-treated, full-hard, high-tensile steel with a minimum yield point of 80,000 PSI. While this is slightly thinner than commonly used 28 or 26 gauge steel, it has a 60-78% higher yield point than the thicker "soft" steel. Our harder steel provides greater resistance to impact damage (hail, rocks, accidents).
In addition to impact resistance, high-tensile steel helps prevent leaks. Fastener holes in soft steel can become enlarged over time (as the metal building expands and contracts) and leak. FBi high-yield strength steel is hard. Fastener holes maintain their shape.
All else being equal, the more ribs (bends in the metal), the closer together and the higher they are, the stronger the steel panel. Of course, a change in any one of those interrelated factors can be offset by another factor. For instance, a panel with shorter ribs, more “bends” and closer rib spacing can be stronger than a panel with taller ribs more widely spaced. FBi uses a panel with ribs on 9” centers (as opposed to 12” centers some others builders use). Our rib profile is shorter than some but has more bends in the steel for additional strength.
When all factors are taken into account, we believe the steel used in FBi’s metal buildings is second to none for strength and benefits to the purchaser.