Tronson Grain Fertilizer Storage


    The Rundown

    Legacy designed, manufactured and constructed a fertilizer storage building for Tronson Grain up in Crary, North Dakota. Patrick Tronson, assistant manager, describes the building as simple with a big footprint, but it’s anything but simple. The floor of the storage building is poured concrete with a pit in the middle. Then there are multiple storage bins separated by precast concrete walls. The attached tower is probably the most imposing feature. It’s a 150-ton capacity automated loading and mixing machine.

    Feature Details

    • Building Size: 108 ft x 300 ft structure with a 40 ft x 120 ft lean-to (37,200 total sq ft)
    • All steel components are hot dip galvanized
    • ExxoTec™ Elite PVC fabric cladding, white and gray
    • Passive ventilation through mesh soffit and roof vents
    • Combination cast-in-place and pier foundation
    • Conveyor system is supported by the roof beams and can load about 800 tons an hour
    • The whole building has a 15,000-ton capacity
    • Installed by Legacy crews
    • 26.1 psf ground snow load, 105 mph wind load,
      exposure C, seismic A
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    Bulk Commodity


    37,200 sq ft


    Crary, ND




    The Legacy construction crew was very professional and courteous.

    Because of our soil issues, we simply couldn't afford to construct a more traditional building. The concrete costs made a more traditional building cost prohibitive. The lightweight design of our Legacy building allowed us to reach a compromise between soil conditions and cost. Regarding the design and construction phases of the building, I can say that the process went exceptionally well. When I made eleventh-hour changes to the job, Legacy handled them with ease. They finished the job well ahead of schedule, worked safely, and followed our stringent safety requirements to the letter.

    Joe Bitter Alliant Energy/IEI Barge Services

    The new building will protect the salt supply.

    It will be protected from being compromised by wind and precipitation. Once the general contractor completed the footings and floors, Legacy installed the fabric building very quickly, in about two weeks. It was a very positive process with professional communication between Legacy and Dewberry throughout the project.

    Craig Swengle Dewberry Engineers

    Legacy was very easy to work with.

    The old buildings used tubular steel, and no matter what you do, the salt gets inside the tubes and corrodes them. They came out here with their crew, rented all their equipment, and erected the buildings in three weeks flat – a week ahead of schedule. It's a stand-up company.

    Theo Gatsonis CM & Sons
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