Stacking Tube Coal Silo Inspection Following a Fire – West Virginia
Market: Power Material Stored: Coal Silo Size: 20′ diameter by 112′ tall Issue: Coal fire inside the silo. Project Background A stacking tube silo. Stacking Tubes can be constructed using the same Jumpform technology as much larger storage silos. Stacking Tubes, sometimes called Lowering Wells, store bulk material in an external conical pile and double as conveyor supports. The material is conveyed to the top of the stacking tube and dropped in by gravity. An inspection was required on this stacking tube due to a fire that occurred in the lower one third of the tube. Because of the heat, the structure was weakened. In addition to the fire damage, there are obvious signs of impact damage caused by dozers moving the coal piled around the stacking tube over the years. Pictured below is a closer look at one of the discharge points showing visible structural steel around the discharge and obvious impact scarring of the concrete. A closer look at one of the discharge points. Stacking Tubes are an economical method for storage and material transport in this nature. The construction cost is less expensive than traditional silos because they are much smaller in size and do not have to sustain the vast loads of a traditional concrete silo. It is, however, still important to have these structures inspected regularly by a professional engineer to maintain the efficient operation of the material storage and handling system. To date this stacking tube is still standing, but is not in operation.
Coal Silo Inspection Reveals Suspended Steel Cone Failure – Kentucky
Market: Mining Material Stored: Coal Silo Size: 35′ diameter by 120′ tall Issue: Suspended steel cone failure Project Background A suspended steel cone failure. Marietta Silos was called in to perform an inspection and determine the cause of failure in the silo pictured above. After expert examination, we concluded the failure was a result of the suspended cone breaking loose from the silo wall; the cone fell straight down destroying all the discharge equipment below and blowing out the silo wall. Due to the damages, the silo was deemed unrepairable. As a result, the mine faced significant financial losses and closed operations. Silos constructed with suspended cone construction need to be inspected at a minimum annually. New silo construction design rarely utilizes the previously acceptable suspended cone construction. It is imperative that silos constructed with this ‘old’ construction design be inspected annually at a minimum to insure their structural integrity.
Mitigating the Risk of Silo Collapse
At a glance, a concrete or steel silo appears to be a static, engineered structure designed to handle extreme forces. In reality, a silo is a dynamic system that is constantly responding to material flow, pressure changes, moisture, and vibration. When silos are treated as set-it-and-forget-it assets, small structural issues can quietly evolve into catastrophic failures. Mitigating the risk of catastrophes like silo collapses and dust explosions requires understanding how these stresses develop and addressing them before they compromise the integrity of the structure. The Mechanics Behind Silo Collapses Silo collapses are rarely sudden or unpredictable. In most cases, they are the final result of long-term structural degradation. At Marietta Silos, we consistently see three primary contributors to structural failure. Asymmetrical Loading Silos are designed to withstand uniform internal pressure. When material accumulates unevenly along the walls or when discharge points become partially obstructed, lateral forces shift. Over time, this non-uniform loading can cause wall bulging, increasing the risk of buckling or complete collapse. Concrete Deterioration and Corrosion In concrete silos, moisture intrusion is one of the most serious threats to long-term structural integrity. When water reaches reinforcing steel, corrosion begins. As the steel expands, it fractures the surrounding concrete, leading to cracking, spalling, and delamination that steadily weaken the structure. Roof and Foundation Stress Structural stability depends on both ends of the silo. Foundation settlement can introduce a lean that redistributes loads throughout the shell, while excessive vacuum pressure during discharge can deform or damage the roof. Either condition places abnormal stress on the entire structure. Risk Management Starts With Professional Inspection The most effective way to mitigate the risk of collapses and explosions is through proactive structural inspection. Visual observations alone often miss early-stage deterioration occurring beneath the surface. Marietta Silos offers multiple levels of professional inspection, ranging from targeted visual assessments to comprehensive structural evaluations utilizing advanced tools, including AI-assisted defect mapping. These inspections identify developing issues early, allowing repairs to be planned rather than forced by emergency conditions. A small defect today can become a major failure tomorrow. Proactive inspection protects your structure, personnel, and operations. Proactive identification of structural issues is key to maintaining a safe facility. Schedule a Silo Inspection
Beyond the Build-Up: Why Strategic Silo Cleaning is Essential for Structural Integrity
For more than a century, Marietta Silos has led the industry in silo construction, inspection, and restoration. A silo is a major engineering asset, but even the best-designed concrete or steel structure depends on a disciplined maintenance strategy to perform as intended. Seasonal slowdowns, changing material conditions, and preparation for upcoming production cycles make this an ideal time to prioritize silo cleaning and address hidden risks before they escalate. Benefits of scheduling your silo cleaning during off-seasons include: 1. Protecting Structural Integrity Material hang-ups, bridging, and ratholing do more than disrupt material flow; they place uneven stress on the silo's internal structure. When hardened material suddenly breaks loose, the resulting dynamic load can impact the hopper or floor with tremendous force, sometimes enough to blow out the bottom of the silo. Regular cleaning prevents internal voids and reduces the risk of sudden, destructive load shifts. 2. A Critical Component of Predictive Maintenance At Marietta Silos, we promote a holistic approach to silo health. Cleaning is often the first and most important step in any internal silo inspection, as it can be nearly impossible to accurately evaluate concrete walls, liners, or structural elements when they are buried under feet of compacted material. Cleaning now allows our engineers to identify early signs of cracking, wear, or moisture intrusion before they require major repairs. 3. Efficiency Meets Profitability Poor material flow quietly erodes productivity across an entire operation. Reduced discharge rates slow downstream processes and increase operating costs. Through our sister company, USA Silo Service, we provide advanced cleaning technologies that restore flow and remove accumulated material. In many cases, recovered material can be evaluated and reintroduced into inventory, reducing waste while protecting the structure. 4. The Silo One Call Advantage Managing silo health should not require multiple contractors and disconnected assessments. With Marietta Silos' Silo One Call program, cleaning, inspection, engineering evaluation, repairs, and long-term restoration are coordinated through a single partner. Cleaning your silo now creates a clear starting point for understanding its current condition and building a maintenance plan that protects the structure for decades. Is your silo ready for the next production cycle? Don't let hidden buildup compromise safety or shorten the life of your asset. Contact Marietta Silos today to make professional silo cleaning part of a long-term, engineered maintenance strategy. Contact Us
Understanding the Structural Mechanics of Silo Collapse
Silos are massive engineering feats designed to withstand immense pressure. However, because they are subject to constant loading and unloading cycles, even minor structural compromises can lead to catastrophic failure. At Marietta Silos, we believe understanding the why behind silo collapse is the first step toward prevention. Design Errors and Improper Loading A silo is designed for specific flow patterns, either funnel flow or mass flow. When a silo is repurposed for a different material than originally intended, or when asymmetrical loading occurs, lateral wall pressures can exceed design limits. This imbalance often leads to wall buckling or total structural failure. Foundation Settlement and Deterioration The weight of a fully loaded silo is immense. If the foundation settles unevenly (differential settlement), it creates tilting or leaning. This shifts the center of gravity and introduces stresses that the concrete or steel walls were never meant to handle. Regular foundation checks are a critical part of our professional inspections. Corrosion and Concrete Delamination For concrete silos, carbonation and chloride intrusion can cause the internal reinforcing steel (rebar) to rust. As the steel expands, it causes the concrete to spall or delaminate, stripping the silo of its structural "skeleton." In steel silos, oxidation and wall thinning from abrasive materials create weak points that can "zipper" open under pressure. The Domino Effect of Roof Failures A collapsing roof doesn't just damage the top of the silo; it often compromises the entire structure. Roof failures are frequently caused by excessive vacuum pressure during discharge or over-pressurization during pneumatic filling when venting systems are clogged. Engineering a Safer Future At Marietta Silos, we don't just repair silos; we engineer solutions. From Jumpform and Slipform construction to advanced structural restoration, our team ensures your storage assets meet the highest safety standards. Get started today with a structural evaluation of your silo. Schedule a Silo Inspection.
The Ultimate Silo Maintenance Checklist
At Marietta Silos, we believe a well-maintained silo is not just a structure; it's a guarantee of safety, longevity, and uninterrupted performance. While trained professionals must perform silo inspections and all structural repairs to prevent silo failure or serious injury, there are still things facility managers can check for regularly. Use this checklist to empower your facility managers to conduct safe, simple visual checks from the exterior and know exactly when it's time to call our silo experts. Part 1: Exterior Warning Sign Checklist for Facility Managers Facility managers should perform these visual checks safely from the ground or a securely guarded platform. Your goal is to spot the warning signs that trigger a professional service call. Part 2: Structural Inspection & Restoration (Always Call Marietta Silos) The following tasks require specialized engineering knowledge, non-destructive testing (NDT) tools, or confined space entry training. Marietta Silos professionals must be called for these tasks. Conclusion A disciplined approach to silo inspection, repair, and restoration helps avoid costly downtime, extends service life, and ensures safety. If you've spotted a structural warning sign, don't delay, contact Marietta Silos for support on your next inspection or restoration project today. Schedule an Inspection
Seeing Silos Differently with AI Inspection
For decades, silo inspection has relied on a trained eye, methodical evaluation, and years of experience identifying signs of wear and deterioration. While that expertise remains essential, new technology is helping Marietta Silos take inspection accuracy and efficiency to another level. Our AI Silo Inspection service combines artificial intelligence with drone-based data collection to provide a clearer, more complete picture of your silo's condition. A Smarter Approach to Structural Health AI Silo Inspection uses drone capture technology to collect high-resolution images and video of the entire exterior of a silo or bulk storage container. These images are processed using proprietary software that creates a 3D digital twin of the structure. From there, artificial intelligence algorithms analyze the surface to detect cracks, spalling, corrosion, and other types of damage. Each defect is recorded on the 3D model, identified by type, and ranked by severity. The result is a visual, data-driven record of the silo's condition that can be used for maintenance planning, budgeting, and risk assessment. Because the AI software can detect even very small defects, smaller than 0.1 millimeters, it provides a level of detail that helps identify issues long before they become critical. Faster, Safer, and More Consistent Traditional exterior inspections often require scaffolding or rope access, which can limit visibility and increase downtime. Using drones allows our inspectors to safely access every part of a silo's exterior, regardless of height or location. In many cases, images can be collected in a matter of hours, giving facility managers the information they need without interrupting operations. The AI Silo Inspection report provides detailed analytics, including images, damage mapping, and severity rankings, along with Marietta Silos' professional recommendations. When used annually, this service builds a consistent record of exterior condition over time. Tracking changes year by year helps facility managers identify trends, prioritize repairs, and reduce the likelihood of unexpected failures. Supporting Comprehensive Silo Care AI Silo Inspection can be used as a standalone service or as a supplemental inspection between regular professional inspections. It is also available as an add-on to one of Marietta Silos' three inspection levels. By integrating AI-driven analytics into an ongoing maintenance plan, businesses gain a more reliable foundation for asset management and budgeting. As part of our commitment to advancing silo safety and performance, Marietta Silos continues to invest in tools and techniques that make inspections more precise and efficient. AI Silo Inspection represents an important step in that direction, combining modern data analysis with our long-standing expertise in silo engineering and repair. To learn more about how AI Silo Inspection can enhance your maintenance strategy, visit mariettasilos.com/ai-inspection.
Simplify Silo Care with Marietta Silos’ Full-Service Capability
Managing silo needs shouldn't require juggling multiple vendors. With Marietta Silos' Silo One Call program, you get complete peace of mind knowing that your silo service needs can be managed through one dedicated partner. What "Silo One Call" Means With one call, you launch your silo care journey. From inspections and cleaning to major restoration and even new construction, Marietta Silos has the expertise, tools, and personnel to handle it all. Their depth of experience means you don't need to coordinate multiple contractors or service providers. Integrated Services to the Rescue Marietta Silos combines engineering, construction, inspection, restoration, and cleaning into one seamless package. Our Mobile Inspection Trailer allows for faster inspections and the ability to complete minor repairs on-site during the same visit. This reduces downtime, minimizes mobilizations, and ensures you get the most value from every service. In collaboration with our sister company, USA Silo Service, we are also able to provide silo cleaning, vacuum truck services, and silo maintenance services under one contract. By combining services, Marietta Silos saves clients both time and money. Inspections can be followed by immediate cleaning or repairs, avoiding costly delays. As the largest silo restoration company in the U.S., Marietta Silos offers solutions for every type of repair, from structural reinforcement and spalling or concrete delamination repairs to emergency structural restoration and more. Our decades of experience is used to help make sure your silos remain safe, functional, and cost-effective for decades. Don't let silo challenges slow your operations. Trust Marietta Silos for seamless, single-point solutions. With our Silo One Call, you get full-service results and a dedicated partner who understands every stage of silo care. Contact Marietta Silos today to simplify your silo management with one trusted call.
Silo Solutions for Every Industry
At Marietta Silos, our expertise in silo design, construction, and maintenance spans a diverse range of industries. Whether storing raw materials for manufacturing or finished products ready for shipment, our team understands the unique challenges each sector faces. We've been in the business for more than a century and deliver silo solutions that stand the test of time. Why Industry-Specific Expertise Matters Every industry has unique requirements for material storage. At Marietta Silos, we tailor every design and service plan to meet those requirements, ensuring safety, efficiency, and long-term performance. Industries We Serve: Grain and Agriculture Storage Solutions From grain to feed, we provide silos that protect valuable commodities from moisture, pests, and environmental changes. Cement & Aggregate Silos Our silos are built to handle the abrasive and heavy nature of cement and aggregate storage, ensuring structural integrity for decades. Food Industry Storage Solutions We design food-grade silos that meet strict hygiene standards, ensuring product safety from storage to transport. Power Industry Silos From fly ash to limestone, we design and service silos that meet the critical needs of the power industry. Mining & Minerals Silos Built to withstand extreme loads and environmental conditions, our silos keep operations running efficiently in mining applications. In addition to the construction, repair, and inspection services, Marietta Silos is also able to provide silo cleaning and maintenance services through our sister company, USA Silo Service. No matter your silo needs, we can take care of them all with just One Call. Learn more about the Industries Served by Marietta Silos.
Streamlining Silo Inspections with Our Mobile Inspection Trailer
At Marietta Silos, we've spent decades refining the art and science of silo construction, maintenance, and inspection. In partnership with our sister company, USA Silo Service, we’re able to provide comprehensive silo services that cover all aspects of silo construction, inspection, restoration, cleaning, and maintenance. During silo inspections, our comprehensive silo service capabilities help clients reduce downtime. Through our self-contained, on-site inspection solution, the Mobile Inspection Trailer, we can simplify and accelerate the silo inspection process. Bringing Inspection Capabilities to You Instead of requiring extended downtime or off-site coordination, our Mobile Inspection Trailer brings everything needed for a full silo inspection directly to your location. Outfitted with advanced inspection tools and equipment, the trailer enables our team to quickly assess your silo's structural integrity while minimizing disruption to your operations. This mobile solution is ideal for multi-silo sites or facilities located in remote areas where traditional inspection access might be limited. With Marietta Silos, you're not just getting convenience, you're getting comprehensive inspections performed by silo specialists. Part of a Full-Circle Service Approach The Mobile Inspection Trailer is just one part of our full-circle approach to silo services. From construction to repair, cleaning to inspection, we are the only company in the U.S. that offers complete silo care under one roof. Our mobile inspection solution helps ensure your structures remain in peak condition, protecting your investment and your people. Particularly in cases where there are known or suspected minor repairs, we are able to stock the Mobile Inspection Trailer with some silo restoration equipment so small repairs can be completed at the time of inspection. Schedule Your On-Site Inspection Today Want the convenience of expert inspections without the downtime? Our Mobile Inspection Trailer is ready to roll. Schedule a Silo Inspection