Sonotubes have been used for many decades as simple forms for creating concrete products right on site. Without the use of Sonotubes, many of the concrete columns and other supports used in construction today would be much harder to construct and much more expensive. Most manufacturing and construction companies use Sonotubes without a thought, but did you realize how beneficial a Sonotube is to the earth?
Sonotubes provide value to the construction company. It is inexpensive to purchase concrete mixture and the cardboard tubes and mix them together on site. If a company had to purchase the concrete columns pre-made, the expense would go up astronomically. Not only would the expense of travel increase, the environment would also suffer. It would require more energy to manufacture the forms at another location. Next, the transportation of the concrete would place a drain on the environment by eating fuel and emitting toxins into the air.
Even if a company could use another kind of form on-site, a plastic form, for example, cardboard is one of the most easily recycled materials in the world. When a company is done using the cardboard, it can easily be recycled into a new set of paper products, or even additional tubes. Even when sitting in a landfill, cardboard breaks down quickly and can even benefit the ground. Other products can't do that! In fact, many Sonotubes are already made from partially or completely recycled products. Before they were concrete supports, the tubes were used for some other paper product.
The use of cardboard forms in construction is beneficial in a multitude of ways. When you use Sonotubes, you are benefiting the earth and your pocketbook at the same time.
Sonotube® is a registered trademark product of Sonoco, and is an alternative method option for concrete column forming. Columns are fabricated using a reinforced shaping structure, and traditionally steel or fiberglass was used in the process. However, those materials are both heavy and inflexible and require careful treatment.
Sonotubes® are high quality heavy-duty cardboard structures into which concrete is poured to create a smooth-sided column. The tubes have to be able to withstand the pressure of concrete and have a smooth interior to ensure a flawless column wall finish. They are made with spiral wound fiber layers and adhesive bonding, and are extremely strong in cylinder form. Concrete columns are used in a wide variety of applications, and Sonotube® provides a cost-effective and efficient method of producing a variety of sizes of columns in terms of diameter and length. Short, wide columns are often used as bases for parking lot lamps, streetlights, street signals and deck posts. Tall columns are used for external decoration or roof support around buildings, foundational support in basements and warehouses, and many others. Other uses have been found for Sonotubes® because of their incredible strength-to-weight ratio and cost-efficiency. Sound technicians and sound hobbyists are using Sonotubes® cut vertically in half to improve the acoustics in auditoriums and sanctuaries. They have also been used to construct sound cabinets as the cardboard walls don't absorb the sound waves and so are an ideal material choice.
The versatility of Sonotube® is one of its many advantages. When fiberglass or steel column supports are used, the number of columns poured is limited to the equipment on hand. Sonotubes® however are disposable and do not need to be reused, they also do not need added exterior support as fiberglass and steel tubes do. Therefore, the overall construction time is drastically reduced as multiple tubes are able to be poured simultaneously. They are also recyclable. Once the concrete column has set in the paper tube cavity, the outer cardboard layer can be removed and disposed of. They are typically made from biodegradable paper and so depending on the intended use of the column, can be left on or removed whole or in pieces. The tubes are manufactured between 8 to 56 inches in diameter and up to 18 feet long, Sonotubes® offer versatile solutions for almost any concrete project. The pouring of the concrete is fairly straightforward, although for the longer columns, extra machinery may be required to ensure proper placement of the concrete.