What kind of steel do you use in your tornado storm shelters? How does that compare to plate steel, cold rolled, or other types of steel used in storm shelters? (2024)

There’s more than meets the eye with our choice of steel. While nearly all others use cold rolled A36 plate steel at 3/16″ or even 1/4″ thickness, we chose a different strategy. Our steel is hot rolled 10 gauge 1011-CS Type B, which means it has been tempered to give it pliability and remove the inherent brittleness found with A36. It also keeps the panel weight light enough to be user friendly.

Our steel performs more like kevlar, increasing the impact time by limited deflection, which greatly enhances the unit’s ability to effectively dissipate the impact energy into the structure and properly transfer it to the concrete. It’s like the crumple zone on your car. Even the guys at Texas Tech couldn’t believe how well it performed during impact testing. And of course, since it is designed to deflect we offer a lifetime replacement warranty on any parts deflected due to debris impacts.

Although other shelters may be made with thicker A36 steel, the A36 doesn’t dissipate the energy nearly as effectively as ours, so the impact energy remains much more focused at the point of impact. It will remain rigid and either stand up to debris or rip open and fail catastrophically since it isn’t tempered like our steel. Stopping blunt 2×4 impacts is one thing, but a fence post or street sign post may be another matter. So all of that to say there’s more to steel performance than simply thickness.

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What kind of steel do you use in your tornado storm shelters? How does that compare to plate steel, cold rolled, or other types of steel used in storm shelters? (2024)

FAQs

What kind of steel do you use in your tornado storm shelters? How does that compare to plate steel, cold rolled, or other types of steel used in storm shelters? ›

Unlike nearly all other manufacturers, we use HOT ROLLED ASTM 1011-CS Type B 10-gauge (0.135), a tempered steel. It performs entirely different than the commonly-used A36 COLD ROLLED plate steel, which has to be much thicker since it hasn't been heat treated.

What is the best material for a tornado shelter? ›

These shelters should be able to withstand high winds and flying debris, the two primary dangers posed by tornadoes. Tornado shelters should be constructed using reinforced steel or concrete and anchored securely to resist overturning or uplift. (Or alternatively, they should be underground.)

What gauge steel for tornado shelter? ›

Steel, one of the strongest building materials around, is the best material for storm shelters in today's unpredictable and extreme weather events. This is why Survive-a-Storm Shelters uses 10 gauge steel for all of its residential units and 1/4" steel plate for its community safe rooms.

What is the strongest above ground tornado shelter? ›

The strongest above ground tornado shelters are usually made of steel, reinforced concrete, or both materials.

What are storm shelters made of? ›

Shelters may be made of concrete, steel, fiberglass, or other materials. Each one has its advantages and disadvantages, for both installation and long-term use.

Is a concrete or steel storm shelter better? ›

Long Lasting. Another advantage of steel tornado shelters is that they have an extensive lifespan. While concrete becomes brittle and can crack, steel is a very strong material that remains durable even after extreme weather.

What is the best storm shelter company? ›

F5 Storm Shelters of Nixa, Missouri, is the world's foremost manufacturer and distributor of tornado shelter safe rooms. Our industry leading designs are cost effective and individually tested at the National Wind Laboratory, exceeding the industry standard by 50%.

Can you survive an F5 tornado in a storm shelter? ›

Above ground storm shelters are not only capable of surviving F5 tornadoes but can provide a level of protection that meets and exceeds expectations. With our shelters, you can rest assured knowing that you're prepared for whatever nature throws your way.

Do above ground tornado shelters really work? ›

Many people assume that underground structures provide better protection from the strong winds that come with a tornado. But the truth is that above-ground safe rooms are just as secure as their underground counterparts.

What is the most affordable tornado shelter? ›

The most affordable and weather-resistant tornado shelter material is concrete, but it's brittle and can crumble in the face of extreme weather. Though costlier, steel is a lightweight and durable option best for protecting you from flying debris.

Can you make a homemade storm shelter? ›

Building a simple, small above-ground storm shelter using concrete or steel materials can be more cost-effective than purchasing pre-made shelters or constructing elaborate structures. However, it's crucial to ensure that the shelter meets safety standards and is capable of protecting against severe weather events.

How thick are storm shelter walls? ›

The exterior storm shelter wall panel system typically measures 14" thick and is comprised of an 8" interior layer, a 3" insulation layer, and a 3" exterior layer. These three layers are tied together with the manufacturer's standard to make them a fully composite wall panel.

How do you keep moisture out of a storm shelter? ›

Installing a dehumidifier can significantly help the storm shelter reduce moisture and dampness.

What material is tornado proof? ›

Concrete Homes

Concrete is another material commonly used in tornado-resistant homes. These homes feature walls made of reinforced concrete, which can withstand the high winds and flying debris associated with tornadoes. Concrete walls can be poured in place or set as pre-cast panels manufactured off-site.

Which is better steel or fiberglass storm shelter? ›

While steel offers better physical properties than Fiberglass, it's ability to rust and absorb moisture, chemicals and elements from the ground, make the maintenance of a steel Tornado shelter something that requires a full time staff.

Are tornado shelters 100% safe? ›

An above-ground tornado shelter is 100% capable of withstanding the force applied by even an EF5 tornado. If you live in a place where tornadoes are common, it's important that you have a place to go when a storm strikes.

Can you make a homemade tornado shelter? ›

Building a simple, small above-ground storm shelter using concrete or steel materials can be more cost-effective than purchasing pre-made shelters or constructing elaborate structures. However, it's crucial to ensure that the shelter meets safety standards and is capable of protecting against severe weather events.

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