Fertilizer storage in Camanche, Iowa.

Potash is notoriously difficult to store. It clumps when wet. It is highly corrosive. And, like most bulk material, it requires a wide-open space to store cost effectively.

By combining architectural fabric with a rigid steel frame, Legacy Building Solutions has created fertilizer storage buildings that last longer in highly corrosive environments. The custom structures are also designed to increase operational efficiency while maintaining a low per-bushel storage price.

Non-corrosive storage buildings

PVC fabric cladding, such as the exclusive Legacy fabric ExxoTec™, is anti-corrosive. Unlike steel, fabric is immune to pitting and galvanic reactions. The fabric will remain free of corrosion, oxidation, and rust, even after years of exposure to corrosive elements.

Every Legacy building is constructed with a rigid steel frame. The steel frame uses solid web members, which are less susceptible to corrosion than the open web trusses commonly used in fabric structures. Hot dip galvanized steel adds yet another layer of protection against corrosion. It has a zinc coating applied in post-production to extend the lifespan of the steel frame.

For the ultimate in corrosion protection, adding a fabric liner to the inside of the steel frame keeps the corrosive potash out of contact with the steel – preventing corrosion before it can even start. Lined buildings contain a separate ventilation system for the main storage area, as well as the building cavity to prevent condensation and moisture build-up that can cause corrosion and other building damage. Properly ventilating a building is a key factor in fighting corrosion.

IEI storage bays.

Airtight building envelope

Studies have shown that fabric structures provide a more airtight building envelope than steel structures. Flexible ExxoTec™ fabric seals tightly around all openings, and the membrane is installed without thousands of screw holes – a natural source of leaks.

A tightly constructed building will prevent water from entering the building, which can cause potash to clump. Fabric also has non-conductive properties, which maintains a more consistent building interior temperature.

Clearspan storage space

When fabric is applied to a rigid steel frame, the buildings have greater design flexibility and wider clearspan capabilities. Legacy buildings are available 400 feet wide, without the need for interior columns. The building length, width, and height are customized to meet specifications.

Proven rigid frame engineering means building features including overhead doors, precast storage bays, and conveyors can be designed and engineered for any building application. Many potash storage buildings use precast concrete walls for the greatest storage capacity.

Another common feature for bulk storage is a lean-to. Adding a lean-to gives additional space for heavy equipment and trucks without compromising the available storage space.

By combining fabric with the design flexibility and strength of a rigid steel frame, Legacy Building Solutions constructs potash storage buildings that are designed to last longer and work better than steel or other alternate building types.

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