While placing a shipping container directly on the ground may seem like an easy storage solution, it can sometimes cause hidden problems with rust and decay. The bottom of a container is made of steel. When it sits on damp earth, it retains moisture, which slowly eats away at the structure. This can easily be remedied with proper footings to keep your container dry and sound for many years of use.
Sub-base footings can help keep your shipping containers safe. This one preventive step ensures that your storage unit and contents within remain safe and away from environmental damage. Before you make up your mind, here is how sub-base footings prevent corrosive moisture damage to shipping containers.
Eliminating Direct Contact With Damp Soil
Soil acts as a giant sponge that holds water for a long time after the rain stops. It keeps everything touching it wet. If your container is directly on the ground, the constant exposure to moisture will start a cycle of rust that is difficult to stop once it gets going. Sub-base footings provide a physical barrier to keep the steel frame off the wet ground and dry.
Encouraging Vital Airflow Underneath
One of the best benefits of using footings is the creation of a gap that allows air to flow beneath the floor of the container. This constant movement of air ensures that any dampness trapped under the unit evaporates quickly rather than soaking into the structure. Without this airflow, the space under your shipping container becomes a dark, humid pocket that encourages both rust and mold growth.
Achieving Perfect Levelling for Structural Integrity
Reliable shipping containers are built to be perfectly square and rely on being level to keep their heavy steel doors properly aligned. The frame will eventually twist if you place your container on uneven ground, causing the doors to stick or not lock properly. Additionally, the adjustable footings mean you can adjust the height at each corner until the unit is level and stable.
Choosing the Material for Footings
The material you use for your footings should be solid and non-porous so that it does not absorb water and transfer it to the base of the container. Concrete blocks, steel piers or treated timber sleepers provide solid, long-lasting surfaces on which to support the weight of the unit. Avoid untreated brick that will break down or rot under the massive pressure of a heavily loaded container.
Distributing Heavy Loads Safely
A shipping container can carry many tons of cargo, which means a massive amount of pressure on the small area where it touches the ground. Footings spread this weight over a larger area so that when the rains come, the corners won’t sink into soft mud. This weight is important because it prevents the container from tilting or moving as ground conditions change at different times of the year.
Preventing Pests and Rodent Access
When you raise your container off the ground using footings, you make it more difficult for pests and small animals to make a home underneath. Rodents love dark spaces that are protected from the elements, and the gap beneath a container is an ideal target if it is poorly managed. By keeping the area under your container clear, you prevent these guests from damaging the underside of your unit.
Improving Long-Term Maintenance Access
Having your container lifted by footings makes it much easier to inspect the underside for any signs of wear or early rust spots. You can walk around or crouch down to see if the protective paint is still in good condition, allowing you to touch up any areas that need attention. This proactive approach to maintenance is impossible if the container is resting flat on the ground, where you cannot see the base.
Invest in a Reliable Shipping Container Today
Sub-base footings are a small but important investment that can greatly increase the lifespan of your shipping container by preventing moisture damage before it even begins. Upgrading your unit will help the structure remain solid, doors open easily, and steel stay rust-free as long as possible. However, if you want to put a container on your land, don’t disregard the crucial guidelines.