With the implementation of tariffs on foreign steel and aluminum, there has been a flurry of speculation on its impact on the construction industry.
The tariffs will increase the cost of construction projects, which has some considering alternative materials for their tank projects.
What To Consider Before Choosing a Concrete Tank or Steel Above-Ground Tank
When considering the type of material to construct your above-ground storage tank, it is important to consider the various factors that will impact your decision.
1. Durability and Longevity of Concrete vs. Steel
One main complaint of concrete tanks is cracking and leaking; maintenance is required to correct these problems.
A concrete holding tank is not flexible and is subject to expansion and contraction—caused by changing temperatures or seismic activity—which, over time, causes cracks and leaking.
Construction Concerns
Cracks in concrete tanks can be repaired, but in some instances, an expensive plastic liner is required. An untreated crack in concrete can lead to the growth of bacteria on the porous concrete, which might compromise the sanitation of your tank.
Steel Storage Tanks - Most Durable Option
The most significant advantage of choosing a steel tank over a concrete tank is its durability. Steel tanks will flex but not crack like concrete tanks often do.
A properly maintained above-ground steel tank can last well over 100 years, whereas a concrete tank is estimated to have a lifespan of a maximum of 60 years.
2. Cost of Concrete Tanks
Historically, concrete tanks have been an inexpensive alternative to steel tanks with lower initial investment costs. However, it is critical to think beyond the initial investment cost and consider the cost over the life cycle of the tank.
Concrete Water Storage Tank Cons
Then, there is the cost of the water lost since concrete tanks are allowed and expected to leak.
Treated, sanitized water supply is expensive and can adversely affect the tank's surroundings through erosion and the killing of microorganisms in the environment.
The associated maintenance expenses and the potential loss in revenue and usage from having your tank out of service will add up.
Since steel tanks have a longer life cycle, the overall cost spread across the life of the tank makes them the most attractive option. Steel tanks are typically less expensive than concrete tanks.
STI/SPFA has an online tool designed to calculate the Total Cost of Ownership (TCO) to help assist you in calculating the lifetime cost/value of your water storage tank.
3. Flexibility and Customization
Steel tanks are custom-designed to meet your specific needs. This allows you to choose the exact dimension and style of the roof and floor and add inlets, outlets, manways, roof hatches, and vents. After the steel tank is placed into service, it is easy to adapt and change the tank's components if your needs for the tank change.
Steel Storage Tanks Offer Flexibility
Making these adjustments in a concrete tank is difficult and very costly. As a result of a concrete tank being poured into place, moving it is impossible. On the contrary, due to the flexibility of a steel tank, relocating the tank can be easily performed.
4. Safety and Environmental Impact
Safety is the most important item to consider when choosing a tank. If your industry requires you to have confidence in the sanitation level of the liquid in your tank, then steel is the way to go.
Bacterial and Algae Growth
Due to concrete's porous conditions and inevitable cracking, there is the potential for algae growth and calcium leaching. For this reason, some industries require steel tanks to be used for water tank construction.
Recycle Tank Wall
Steel is 100% recyclable. At the end of its life, steel tanks can be recycled and repurposed. There are ways to recycle concrete, but it is a labor-intensive process that might be cost-prohibited.
There are no great recycling options with concrete. However, the decreased environmental impact is better for the environment, preventing your used tank from going straight into the landfill—a win for everyone. More steel is recycled in America each year than paper, aluminum, glass, and plastic combined.
Build the Right Holding Tank With T BAILEY, INC.
T BAILEY, INC. strongly believes in building tanks out of steel. Deciding to build your tank out of steel will be a decision you will not regret. T BAILEY, INC. can help you work through potential problems, deal with potential cost increases, and value engineer the project to create the best solutions for you.
