Shipping Containers as Storm Shelters (2024)

Reasons for those to consider a shipping container storm shelter include living in hurricane-prone regions and/or areas with large quantities of tropical storms and tornadoes. Steel shipping containers are manufactured to withstand wind, rain, snow, and ice! These units can easily endure up to 150mph winds, and this is why many hurricane-prone communities are turning towards the shipping container for safety.

Traditionally, storm shelters are constructed underground but transforming shipping containers to above-ground storm shelters has been increasing in popularity as making an underground shelter out of a shipping container is possible, but not as simple. Cargo containers are designed to be stackable and to bear weight on the corner posts, but they are not intended to withstand large pressure from the sides. With all aspects considered, it is important to determine if an above-ground or underground shipping container storm shelter would work best for your needs and region.

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Discover a wide range of shipping containers at XCaliber Containers!

UNDERGROUND SHIPPING CONTAINER SHELTER

An underground shipping container storm shelter comes with the advantages of being out of the elements, and the safest place to be in the event of a tornado — considering that most tornado damage happens 10 feet from the ground. If you find yourself drawn to the idea of having an underground shipping container storm shelter, here are a few things to keep in mind about your unit.

Suppose a 20ft shipping container weighs around 5,000lbs and is built to carry approximately 60,000 lbs of cargo while stacked nine boxes high. You would think that it is a strong enough structure to withstand the weight of being buried, right? Sadly it is not that simple. A container's strength is in the solid steel framing, not in the corrugated steel side walls. If the container is buried with no interior and exterior reinforcement, it will more than likely collapse or cave in over time.

Buried cargo container storm shelters also require ventilation, so you will also need to figure out how to properly vent the storm shelter while underground. Buried storm shelters may also have issues with moisture build-up. Fortunately, there are many ways to keep moisture out of the cargo container shelter, such as placing pouches of silica beads in the corners to suck up the moisture.

Shipping containers are built from corten steel, also known as "weathering" steel. Corten steel is a rust-resistant steel alloy and is usually combined with rust-resistant paint designed to hold up against harsh weather. The shipping container's doors should seal to be wind and watertight to make sure they can successfully contain the cargo inside. With this in mind, underground steel shipping container storm shelters are an option, but they require more maintenance and effort to make your storm shelter dream a reality.

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With ample space, storage containerscan be repurposed asunderground storm shelters.

ABOVE-GROUND SHIPPING CONTAINER SHELTER

Although underground storm shelters are more popular, an above-ground steel shipping container storm shelter is often a better choice. Unlike an underground storm shelter, they do not have issues with moisture build-up and require less maintenance. Most underground storm shelters have stairs, which is not needed with an above-ground shelter, making above-ground shelters ideal for easier access and maintenance.

When setting a shipping container up as a storm shelter, you need to make sure the container is secured to the ground. (Steel shipping containers have various places on them that can be utilized as tie-downs.) One option is to place sturdy anchors in concrete and use a steel cable to cinch the shipping container down. That will keep the storm shelter stable and able to endure high wind speeds.

Regardless if above ground or below, constructing a shipping container storm shelter will require a deal of planning and research to make sure it serves its purpose in the event you have to use it.

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Our 20' Standard New Steel Shipping Container boasts a sturdy build, ensuring stored items remain safe from the elements - ideal for an above-ground shelter.

Although XCaliber Container does not construct storm shelters from our steel shipping container, we are happy to provide you with a high-quality container to get your project started.

Call us today or request afree quote.

📞 (940) 242-3178

info@xcalibercontainer.com

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Shipping Containers as Storm Shelters (2024)

FAQs

Is a shipping container a safe storm shelter? ›

Over recent years, the sturdy steel shipping container has become an integral part of disaster management. Built to be durable and portable, steel shipping containers are an ideal starting point for constructing a storm shelter.

Will a shipping container survive a hurricane? ›

Hurricanes have the potential to create 150+ mph winds, so the question stands, can a shipping container withstand a hurricane? The answer is yes; a shipping container can be a great way to protect your belongings during a storm—if installed correctly.

How much wind can a shipping container withstand? ›

Shipping Containers & Rated Wind Loads

When empty, a 40' or 45' steel ISO high cube container can resist up to 130 mph winds! A standard height empty 40' steel ISO container can resist even more – 140 mph. A smaller empty 20' standard steel ISO container can even top that at 150 mph winds.

Can a tornado flip a shipping container? ›

In essence, an anchored shipping container can withstand up to 180mph without budging. Moving a shipping container would take a Category 5 hurricane or F3+ tornado.

How to anchor a shipping container for storm shelter? ›

Choose a shelter with a high-strength steel construction and anchor it securely to concrete foundations to prevent shifting during high winds. Bury at least part of the container underground or cover it with earth for added structural stability and insulation.

Do shipping container homes work in Florida? ›

Florida allows shipping containers, as long as they're located in the right zone and you've pulled the right permits. Be sure to find out if you can build a container home on your land, or on any land that you're considering purchasing.

Are shipping containers too hot to live in? ›

Reality: While shipping containers can get warm during the summer, it's a myth that they are too hot to live in. With proper modifications such as insulation, air conditioning, and fans, container homes can offer comfortable living spaces regardless of the weather.

Are shipping containers rain proof? ›

Shipping containers have a degree of water resistance due to their corrugated steel structure and caulking around doors. Regular maintenance is crucial to ensure they remain waterproof.

How cold do shipping containers get? ›

Shipping Containers Can Reach Extreme Temperatures

Another study conducted by engineers at Xerox found that temperatures in shipping containers on land can drop as low as -21ºF (-29ºC) and reach as high as 135 degrees Fahrenheit (57ºC).

How long will a shipping container last outside? ›

Lifespan of a Shipping Container

Generally, a used container can last 10-12 years at sea and long beyond that after it's retired from the cargo ships. When maintained properly, a shipping container can last upwards of 25 years or longer.

Can a shipping container survive a flood? ›

Hurricanes and Flooding

While shipping containers are not waterproof, they are highly water-resistant. This means that your shipping container can easily keep water from heavy rains from your valuable inventory or equipment.

Why do container homes only last 25 years? ›

The biggest risk to shipping container home longevity is rust. Rust-resistant paint can ward this off, but even if the structural integrity of the corrugated sides is threatened, these may be replaced without altering the home's frame.

Is it cheaper to build a shipping container home? ›

According to HomeGuide, the average cost to build and install a container home is $25,000 to $250,000. While that's no small chunk of change, it's significantly less than you'd expect to pay for a traditional house in most parts of the country.

Are container homes a bad investment? ›

Prefab container homes are low-risk investments because they can be considerably cheaper to build and maintain, and may hold their value more so than a traditionally built home.

What is the safest type of storm shelter? ›

A basem*nt, or underground storm shelter or engineered concrete/steel above ground safe room is the safest place. If you don't have access to one of those, get to a sturdy building and take cover on the lowest floor. Put as many walls between you and the tornado as you can.

Can shipping containers be used as bunkers? ›

Building an underground shelter using shipping containers can be complicated. You need to consider the container's structural integrity and modify the design to ensure that your container does not buckle due to intense ground pressure. Steel reinforcements are the best option when using shipping containers underground.

How fireproof is a shipping container? ›

While marine-grade CORTEN steel, or weathering steel, they're made from are fire-resistant materials, the containers themselves are not entirely fireproof. High temperatures sustained over a prolonged period can warp or melt the steel, and the wooden floors found in standard containers can catch fire.

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