A simple typographical error on the Internet got me to “hansonsteel.com” (Hanson versus Hansen-which is the company I work for) where I found an interesting page on “Steel vs. Pole Buildings”. Let me deflate their ego, by blowing holes in their misinformation.
For sake of ease of reading, words in bold italics are those from the all steel building website:
The most frequently-asked questions are about the differences between pre-engineered steel buildings and pole barns/buildings. The benefits of pre-engineered steel buildings are significant.
Hanson Steel Buildings bolt to a solid concrete foundation, Base angle or sheeting notch with closure strips to ensure the building will be frost-free and water resistant.
In comparison, pole barns/buildings are set directly into the earth and offer little or no resistance to water or frost heaving.
All steel buildings require either a concrete foundation or significant concrete piers. What the all steel people do not say is, the foundation design is NOT included with the building purchase, and a local engineer must be hired to provide the design. Neither a base angle or a sheeting notch are going to have anything to do with preventing frost heave. A “sheeting notch” actually places the steel wall sheeting in contact with damp concrete, accelerating the rate of deterioration of the wall steel. Bottom line – this notch is going to hold water with the steel sitting directly in it…causing it to rust.
Our company has an older pole building where the previous owners errantly put “fill” up to the bottom of the steel – see how it rusts the bottom to be in contact with water?
Pole building design accounts for frost heave in the location of the base of the building foundation below the frost line. The top of a concrete slab in pole buildings is at least 3-1/2 inches above the highest point of the grade outside of the building – it would take a deluge to get water above this point.
Using the foam closures and base angle may prevent water moisture from getting into their building, but it’s not going to have any effect upon frost heave.
Again from their website:
Hanson Steel Buildings are made with solid steel framing that is coated with a highly protective primer applied after cuts and drill holes to ensure complete rust protection. We offer a lifetime product that does not warp, twist or decay like wood. Steel is a more sanitary product when used for livestock purposes. Steel is also preferred for permanent installations.
The pressure-treated wood used in pole barns/buildings can warp and shrink. It is not recommended for permanent installations. The foundation frame shifts and requires straightening every 5-7 years – a process that costs thousands of dollars! Clear-span capabilities are very limited with wooden construction.
An engineered Hansen Pole Building comes along with a Limited Lifetime Structural Warranty. Post frame buildings are certainly permanent – the millions of them existing everywhere in America are a testament to their durability. Many of them have been around for well over 100 years and I expect them to be used and useful long after I am gone from this earth.
With the use of dry lumber, it is dimensionally stable and won’t shrink. If they are using green lumber, which never should be used on pole buildings, then yes, this could be an issue. Hansen Pole Buildings only uses dry lumber.
I’d like to see verification of any properly design and constructed post frame building having a foundation shift, or ever needing to be straightened! This is one I’d dearly love to see documentation to support their claim. With adequate footings, (meaning the foundation was done right), in over 14,000 buildings and 30 years, I’ve never seen a building shifting or having to be straightened – whether it’s all steel or a post frame building.
Pole buildings can easily clear span 80 to 100 feet using wood trusses. Rarely are larger clearspans needed for any type of building. When they are, (such as roping and riding arenas) – we are quick to tell folks they may want to check out an all steel building.,
I don’t have a problem with all steel buildings – quite the contrary. But they have their limitations in use, which you can check out by going to the search field and typing in “all steel buildings”.
Come back tomorrow for more….on all-steel building propaganda.