Alchatek Blog

Hydraulic inefficiency in stormwater systems can wreak havoc in urban settings, especially during times of heavy rainfall or storms. When stormwater systems become less effective in draining water, it increases the risk of localized flooding and may even contribute to infrastructure failure. The problem often boils down to leaks and cracks in crucial components like curb inlets, drop inlets, manholes, and culverts.

Recognizing Symptoms

Identifying hydraulic inefficiency starts with a keen observation of several signs that indicate a system is not operating optimally. These symptoms may include but are not limited to, reduced flow rates, unexpected pooling of water near stormwater inlets, or even backups in areas where there was previously a smooth flow of water. Regular monitoring can help pinpoint these indicators and flag them for further investigation. This is a proactive step that can be taken to prevent inefficiencies from escalating into larger issues.

Role of Leaks and Cracks

Leaks and cracks in system components directly contribute to the reduction in hydraulic efficiency. For example, when a curb inlet has a crack, not only does it allow an unwanted inflow of sediment and debris, but it also reduces the capacity of the inlet to channel stormwater effectively. Similarly, leaks in manholes can lead to soil infiltration, adding unnecessary volume to the stormwater, thereby reducing the system's overall capacity. Each of these issues diminishes the stormwater system's efficiency, making it critical to address them promptly.

Analyzing Flow and Capacity

The key parameters that suffer due to leaks and cracks are the flow rate and capacity of the stormwater system. Flow rate refers to the speed at which water moves through the system, while capacity denotes how much water the system can handle at any given time. Reduced flow rates can slow down the drainage of water from streets, leading to surface pooling and flooding. On the other hand, diminished capacity means that the system becomes overwhelmed more quickly during heavy rainfall, exacerbating the problem. Maintenance teams should periodically measure these parameters to assess the health of the stormwater system.

Potential Consequences

The immediate consequences of ignoring hydraulic inefficiency can be severe. Reduced flow and capacity increase the risk of localized flooding, especially during heavy rainfall. This flooding can damage properties, disrupt traffic, and in extreme cases, pose risks to public safety. In addition, an inefficient stormwater system places extra strain on adjacent infrastructure, making them more susceptible to wear and tear, or even failure.

Solving the Issue with Polyurethane Grouts

One highly effective solution for sealing leaks in these crucial components is the use of polyurethane grouts. These grouts offer several advantages over traditional sealing methods. They can be applied with precision, allowing for targeted sealing of leaks and cracks. Once applied, polyurethane grouts expand to fill the gap, providing a watertight seal that prevents further leakage or infiltration. This in turn enhances the flow rate and capacity of the system, making it more efficient, especially during times when it is most needed, such as heavy rainfall or storms.

Actionable Steps for Maintenance Teams

Maintenance managers and teams can take several actionable steps to tackle the issue of hydraulic inefficiency effectively. Firstly, incorporate regular monitoring and inspections into the maintenance schedule to catch signs of inefficiency early. Secondly, prioritize the repair of leaks and cracks in components that are key to maintaining optimal flow rate and capacity. Utilize polyurethane grouts to seal these leaks (or hire a waterproofing specialist to do the work). Finally, after any repair, conduct a comprehensive assessment to ensure that the applied solutions have successfully restored the system’s hydraulic efficiency.

Reaping the Benefits

Taking timely action to fix hydraulic inefficiencies is not just about preventing immediate issues like flooding; it’s also an investment in the long-term durability and effectiveness of a city’s stormwater management infrastructure. A well-maintained system requires less emergency intervention, reduces maintenance costs in the long run, and most importantly, ensures the safety and well-being of the community it serves.

The Importance of Continuous Learning

For maintenance managers and teams, staying updated on the latest technologies and methods for addressing hydraulic inefficiency is essential. Training programs, workshops, and seminars offer valuable insights into new materials and techniques that could be more effective and cost-efficient. Polyurethane grouts are a testament to how advancements in materials science can offer superior solutions for age-old problems.

In summary, hydraulic inefficiency poses a significant challenge for stormwater systems, especially during periods of heavy rainfall. Recognizing the symptoms early, understanding the role of leaks and cracks, and choosing the most effective sealing methods like polyurethane grouts can make a significant difference and help to avoid costly emergency repairs. Actionable steps and a focus on continuous learning can go a long way in ensuring that a stormwater system operates at its peak efficiency, safeguarding communities from the risks of flooding and infrastructure failure.

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For contractors seeking productive work during the slower winter months, Alchatek is here to help every step of the way.

Our team can provide guidance on expanding your services to take on new projects during cold weather. When you’re undertaking new winter work, we're available to consult on important logistics like site evaluations, scheduling, equipment selection, and material adjustments for colder temperatures.

We offer personal consultation to equip you with any new skills required for off-season jobs. We also collaborate with contractors to build relationships with local engineers, associations, municipalities, and other potential lead sources. Our staff can assist with tailored presentations and outreach efforts to position you as the go-to contractor for these clients.

Properly winterizing your slab lifting equipment is equally crucial if you’re winding down for an off-season. Our technical experts can advise you on prepping your slab lifting rig and/or PolyBadger lifting system for winter storage.

Contact the Alchatek support team today to for assistance with your winter game plan.

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This guide outlines a step-by-step process for setting up your PolyBadger system for winter storage. Following these recommendations will not only preserve the integrity of your equipment but also make it easier to get it running when the warm weather returns.

Preparing a PolyBadger for Winter Storage

1. Establish power to the cabinet and heat the hose (A heater, B heater, and hose) to the target temperature of 130° F.
2. Introduce material to the cabinet.
3. Turn the air supply on and recirculate to heat up the ISO and resin.
4. Once the PolyBadger is up to temperature, turn off the air supply and remove the airlines from the stick pumps.
5. Remove the supply and the recirculation line from the A-side stick pump.
6. Drain all the remaining material from the pump and clean it with brake cleaner.
7. Place the stick A side stubby stick pump into a 5-gallon pail of AP Pump Flush.
8. Reconnect the supply line and leave the recirculation line to drain in a purge pail.
9. Repeat steps 5-8 on the B-side stick pump.
10. Reconnect the air supply to the stick pumps, hold the return lines in a purge pail, and slowly open the air valve on the stick pumps.
11. You will notice material slowly pushed out of the recirculation line into the purge pail. Continue to pump AP Pump Flush through the system until it comes out of the recirculation line clear, with no added color or debris.
12. Shut the air valve supplying the stick pumps. This will stop the flow of material.
13. Reconnect the recirculation lines to the appropriate stick pump and tighten.
14. Turn the recirculation pump valves to supply the hose.
15. You can remove the Handi Gun or leave it on for this stage, holding the hose in the purge pail. Turn on the supply valves on the end of the hose just before the Handi Gun. Slowly open the air valve on the stick pumps and pull the trigger on the gun.
16. You will notice material slowly pushed out of the hose line into the purge pail. Continue to pump AP Pump Flush through the system until it comes out of the hose line clear, with no added color or debris.
17. Shut the air valve supplying the stick pumps. This will stop the flow of material.
18. Remove the stick pumps from the AP Pump Flush. (Make sure to mark your pails A and B for future use).
19. Insert stick pumps into AP Pump Saver 195. (Make sure to mark your pails A and B for future use).
20. Push the AP Pump Saver 195 through the hose line. You will notice the AS Pump Flush slowly pushed out of the hose line into the purge pail. Continue to pump AP Pump Saver 195 through the system until it comes out of the hose line clear (you will notice a thick, clean fluid).
21. Turn off the supply valves on the hose just before the Handi Gun.
22. Disconnect the air supply to the stick pumps.
23. Move the hose supply valve into the recirculation position to depressurize the system.
24. Shut off supply valves to the cabinet.
25. Turn off heat zones.
26. Turn off the main disconnect.
27. Remove residual grease from interior cabinet pumps.
28. Replace with new grease.

If you follow these steps, your PolyBadger should be ready for secure storage during the winter months.

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As temperatures drop, contractors in certain areas need to winterize their slab lifting rigs for storage during the off-season. Below are the step-by-step guidelines to properly store your equipment.

Important Note

• Extra attention is devoted to the A-side of the system, which is standard practice.
• This guide assumes you're using a PMC pump for your slab lifting rig.

Preparing a Slab Lifting Rig for Winter Storage

1. Remove and clean the A and B stick pumps. Clean the exterior of the pumps with brake cleaner to remove as much residual resin and polyol as possible.
2. Place the A-Side transfer pump into a 5-gallon pail of the AP Pump Flush.
3. Remove the recirculation hose from the A-Side drum and place it in a purge pail.
4. Open A-Side inlet valve and recirculation valve on your PMC machine.
5. Slowly open the air valve on the A-Side transfer pump to start introducing the AS Pump Flush through the A-Side of the machine.
6. You will notice iso material being pushed out of the recirculation line into the purge pail. Continue to pump AS Pump Flush through the system until it comes out of the recirculation line clear, with no added coloring or debris.
7. Shut the air supply feeding the transfer pump. This will stop all flow of material.
8. Un-cap the A-Side of the PMC whip hose. Once un-capped, place the hose into the purge pail.
9. Close the recirculation valve on the A-Side of the PMC machine.
10. Slowly open the air valve on the A-Side transfer pump to start the flow of AS Pump Flush through the heated hose.
11. You will notice iso material being pushed out of the whip hose into the purge pail. Continue to pump AS Pump Flush through the system until it comes out of the recirculation line clear, with no added coloring or debris.
12. Now that this process is complete, the A-Side has been completely cleaned of any iso material.
13. Remove the A-Side transfer pump from the pail of AS Pump Flush and place it into a 5-gallon pail of AP Pump Saver 195.
14. Slowly open the air valve on the A-Side transfer pump to start introducing the AP Pump Saver 195 through the A-Side of the machine. Continue to pump the AP Pump Saver 195 until you have pure and clean AP Pump Saver 195 coming out of the end of the whip hose.
15. Place the B-Side stick pump into a separate 5-gallon pail of AP Pump Saver 195.
16. Slowly open the air valve on the B-Side transfer pump to start introducing the AP Pump Saver 195 through the B-Side of the machine and heated hose. Continue to pump AP Pump Saver 195 through the system until it comes out of the end of the whip hose, with no added coloring or debris.
17. Once the entire system is full of clean AP Lube 190, slowly start to recirculate the AP Pump Saver 195 through the entire system. When doing this, it is best to let the PMC machine cycle while recirculating the AP Pump Saver 195.
18. Once all these steps are complete, close the air on each transfer pump and re-cap the heated PMC whip hoses.

If you follow these steps, your slab lifting rig should be well-prepared for the winter storage period.

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It's time to revisit the idea of remaining profitable during the winter months, but where does one begin?

Engaging with Engineers and Consultants

Networking with engineers is a cornerstone for securing a consistent flow of projects. Engineers are usually involved in any sizable geotechnical or waterproofing project. From industrial settings to property management companies and hydroelectric plants, an engineering firm is almost always the first port of call for problem-solving.

Alchatek offers presentations designed for engineers that cover a range of polyurethane applications like leak sealing, soil stabilization, and concrete lifting. These presentations often qualify for continuing education credits, offering engineers added value. We prefer to collaborate with local contractors for these presentations, creating a link between suppliers, contractors, and engineers.

With diligent follow-up, such activities typically yield smaller-scale projects, which, when successfully completed, pave the way for larger undertakings. Engineers are the go-to professionals for property owners facing issues. If you establish yourself as a reliable, punctual, and skilled contractor, you are more likely to secure jobs without having to go through the bidding process.

Networking Through Professional Associations

A wealth of professional associations exists across various fields and trades. Becoming a member provides an excellent platform for networking and discovering new opportunities.

Take, for instance, your local chapter of BOMA (Building Owners and Managers Association), which represents the expansive commercial real estate industry. BOMA members are mainly property owners, facility managers, and building engineers—a perfect audience for discussions on topics like elevator pits, parking structures, and tripping hazards.

IFMA (International Facility Management Association) is another noteworthy association. While BOMA represents the "landlords," IFMA represents the "tenants," who are often the first to report issues. Presenting to IFMA allows you to inform facility managers about problem-solving polyurethane technologies.

Don't overlook ASCE (American Society of Civil Engineers) either. It's not just for engineers; they offer a category called Organization Partners for non-engineers. Your presentation here can also be facilitated by Alchatek.

Reaching Out to Government Agencies

Sometimes old-school techniques like making phone calls and doing online research are invaluable. Connecting with local municipalities and Departments of Transportation (DOTs) can give you insights into upcoming projects. Attend bid meetings to network with general contractors and engineers.

Don't ignore mass transit authorities in cities with train or subway systems. These authorities regularly release projects for bidding and have engineering departments that could benefit from your solutions in leak sealing and geotechnical applications.

The cold months are an opportunity if you're a contractor seeking winter work. Not only will these strategies help you find winter projects, but they will also positively impact your business all year round. Reach out to the Alchatek support team for guidance.

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Contractors specializing in chemical grouting in the northern United States are often constrained by the seasons when it comes to outdoor soil stabilization and slab lifting tasks. However, with strategic planning, they can also find profitable avenues to keep busy during winter.

Winter Geotechnical Projects

• Warehouses and Distribution Centers: Interior slab lifting and void filling. Concrete floors and loading docks.
• Office and Retail Spaces: Interior concrete leveling.
• Infrastructure: Below the frost line where groundwater seepage impacts the density of soil and the stability of pavement.
• Agricultural Facilities: Slabs in structures like grain-drying bunkers.
• Commercial/Industrial Settings: Void filling and slab leveling in manufacturing plants and factories.

Expanding the Scope: Other Polyurethane Injection Applications

Winter also provides an opportune time to acquire new skills in areas like crack injection, slab undersealing, and curtain wall grouting. Cold weather conditions make concrete contract, widening cracks and joints, thus making them easier targets for injection work. Here are additional applications requiring attention:

• Subterranean Parking Garages: Leaks through cracks, expansion joints, and cold joints can be treated with specialized leak seal resins.
• Elevator Shafts: Particularly in areas with high water tables, elevator pits are prone to leaks.
• Tunnels: Whether for pedestrians, vehicles, or mass transit, tunnels often face water seepage issues, solvable via polyurethane grout.
• Dams: Despite their massive structure, dams are not immune to leaks. Winter is a suitable time for crack injection maintenance.
• Residential and Commercial Basements: Treat leaks in cracks and joints.
• Slab Undersealing: Similar to curtain wall grouting, but it's done through the floor.

Consult the Alchatek support team for technical assistance with your next project.

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Effectively repairing and sealing leaks in dams requires specialized expertise and high-quality materials. At Alchatek, we have spent decades developing and manufacturing premium polyurethane grouts designed specifically for waterproofing and protecting critical infrastructure like dams.

If you own, operate, or manage a dam, we encourage you to contact us to discuss your unique requirements. We can provide custom recommendations tailored to your dam's needs and specifications. Our team has in-depth knowledge of the latest techniques and materials for effective, long-lasting leak sealing and waterproofing.

In addition to insights and product recommendations, we also offer referrals to qualified contractors. These contractors have extensive experience in services like:

• Crack and Joint Repair
• Curtain Wall Grouting
• Waterproofing

We ensure they are properly trained in utilizing our products for optimal results.

Don't leave your dam's structural integrity to chance. Let our experts provide insights on an effective maintenance plan using premier sealant products. Get started on enhancing your dam's safety, longevity, and operational efficiency. Call 404-618-0438 or fill out this form to contact Alchatek today.

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When it comes to dam management, the focus often rests on structural integrity and operational efficiency. However, the environmental implications of dam leaks are equally critical. Leaks can lead to a range of downstream consequences, affecting not just human communities but also aquatic life and entire ecosystems.

Downstream Consequences: More Than Just a Leak

A leak in a dam can have severe environmental impacts. For instance, water seeping through cracks may carry with it various contaminants, from industrial waste to agricultural runoff. Once this contaminated water enters natural waterways, it can harm aquatic life and disrupt delicate ecosystems. Leaks can also lead to sedimentation issues, affecting water quality and aquatic habitats. Moreover, fluctuating water levels due to leaks can disrupt the natural flow regimes of rivers, affecting fish migration patterns and the reproductive cycles of aquatic species.

Environmentally Safe Polyurethane Grout

Determining whether your project's materials meet NSF/ANSI/CAN 61 standards is crucial, especially if those products will come into contact with drinking water. The National Sanitation Foundation (NSF) sets rigorous public health standards and ensures that products undergo thorough testing and quality assurance. Adhering to these standards not only promotes public health but also ensures compliance with the Safe Water Drinking Act (SDWA), a federal law enforced by the Environmental Protection Agency (EPA) that can result in substantial fines and even incarceration for non-compliance. Choosing contractors who use NSF-certified leak seal materials provides confidence that their work won't compromise water quality, thereby helping to avoid legal repercussions and safeguard public health.

The Imperative of Environmental Consideration in Dam Management

In conclusion, the environmental implications of dam leaks are too significant to ignore. From affecting aquatic life to disrupting entire ecosystems, the downstream consequences of unaddressed leaks can be severe. NSF-approved polyurethane grout offers an effective and environmentally safe solution for leak sealing, protecting not just the dam but also the world beyond it. By taking a proactive, eco-friendly approach to leak sealing, dam owners and operators do more than just fix a problem; they contribute to the broader goal of environmental sustainability.

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In the realm of dam management, energy efficiency often stands as a cornerstone of operational success. While dams serve a variety of functions, from water storage to flood control, the optimization of energy production remains a critical concern. Structural weaknesses, such as leaks and cracks, can significantly hamper a dam's ability to generate power, leading to increased operational costs and reduced effectiveness.

A Contractor's Role in Maximizing Energy Output

Engaging a contractor experienced in applying polyurethane grout can be transformative for a dam's energy efficiency. By expertly sealing leaks and cracks that could otherwise drain the reservoir, the contractor ensures that hydroelectric dams can function at their maximum energy-producing capacity. This not only mitigates immediate energy losses but also prolongs the lifespan of the dam's infrastructure, offering long-term energy benefits.

Cutting-Edge Approaches to Energy Optimization

For dam owners and operators looking to push the envelope in energy efficiency, several innovative strategies can be employed. Real-time monitoring systems can offer immediate data on energy performance, enabling quick adjustments. Advanced turbine technologies can be explored for greater energy output, and energy audits can identify areas for improvement, from mechanical upgrades to process changes.

Regulatory and Financial Incentives

Maintaining high levels of energy efficiency not only reduces operational costs but can also bring regulatory benefits. Many jurisdictions offer incentives, grants, or tax breaks for energy-efficient operations, providing an additional financial impetus to optimize energy use in dam management.

Beyond Leaks: A Holistic View of Energy Efficiency

While it's true that leaks can deplete water levels and thus reduce a hydroelectric dam's power-generating capacity, energy efficiency is a broader issue. It encompasses optimizing turbine performance, minimizing operational friction, and even integrating alternative energy sources like solar panels to power auxiliary systems. These elements collectively contribute to the dam's overall energy footprint.

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Sediment accumulation in dams is a concern that often goes unnoticed until it becomes a significant problem. Over time, sediment carried by the water can settle at the bottom of the dam, reducing its storage capacity and affecting its functionality. This build-up can also lead to increased pressure on the dam structure, making it more susceptible to leaks and cracks.

The Domino Effect of Sediment Accumulation

When sediment accumulates, it doesn't just affect the dam's storage capacity. It can also have a domino effect on other aspects of dam operation. For example, sediment build-up can impede the flow of water through spillways and outlets, affecting the dam's ability to control floods. In hydroelectric dams, sediment can clog turbines, reducing their efficiency and leading to increased operational costs. Furthermore, sediment can affect water quality by fostering an environment where harmful bacteria and algae can thrive. This is particularly concerning for dams that serve as a source of drinking water.

Polyurethane Leak Seal as a Preventive Measure

One of the most effective strategies for managing sediment challenges is proactive prevention. In this context, hiring a contractor to apply polyurethane grout is invaluable. The contractor will use this material to seal leaks and cracks in the dam structure, thereby minimizing the inflow of sediment-laden water. This approach is especially critical for earthen dams, where sediment can infiltrate not only through spillways or other openings but also through the dam body itself.

The Versatility of Polyurethane Grout in Sediment Control

Polyurethane grout is versatile enough to be used in various types of dams, including concrete, earthen, and masonry structures. The material can be applied in a targeted manner to seal specific areas where sediment inflow is a concern. For instance, in earthen dams, polyurethane grout can be injected into the soil to create an impermeable barrier that prevents sediment-laden water from seeping through. In concrete dams, the grout can be used to seal cracks and joints, effectively stopping the inflow of sediment.

The Science Behind Effective Sediment Control

Polyurethane grout works by forming a durable, water-resistant seal. This material expands to fill the voids, cracks, or joints where it is injected, adhering strongly to the surrounding material, whether it's concrete, soil, or masonry. The resulting seal is not only durable but also flexible, allowing it to move with the dam structure without cracking or losing its sealing properties. This flexibility is particularly important in areas with frequent temperature changes or varying water levels, as it ensures that the seal remains effective under different conditions.

Actionable Steps for Effective Sediment Management

Managing sediment effectively requires a multi-pronged approach:

1. Conduct Regular Inspections: Regular inspections are crucial for identifying areas where sediment might be entering the dam. Ensure these inspections are thorough and cover all potential entry points, including cracks, joints, and spillways.
2. Consult with Experts: After identifying problem areas, consult with experts to determine the most effective solution. Polyurethane grout is often recommended due to its effectiveness, durability, and versatility.
3. Hire a Skilled Contractor: Employ a contractor who has experience in dam repair and polyurethane grout application. The project's success will largely depend on the contractor's skill and experience.
4. Monitor Post-Repair: Once the repair is complete, continue to monitor the dam regularly to ensure that the sediment issue has been effectively addressed. Regular monitoring allows for timely interventions if new problem areas emerge.

Economic Implications of Effective Sediment Management

Effective sediment management is not just about maintaining the dam's functionality; it also has significant economic implications. Failing to manage sediment effectively can lead to increased operational costs. For example, sediment removal or dredging can be an expensive and time-consuming process. Additionally, sediment build-up can reduce the efficiency of hydroelectric turbines, leading to increased energy costs. By using polyurethane grout to prevent sediment inflow, dam owners and operators can avoid these additional costs, making it a cost-effective long-term solution.

Ensuring the Longevity and Functionality of Dams

Sediment build-up is a challenge that can affect the longevity and functionality of dams. However, it's a challenge that can be effectively managed through preventive measures like the use of polyurethane grout. By sealing leaks and cracks that allow sediment-laden water to enter the dam, this versatile material plays a crucial role in maintaining the dam's storage capacity, operational efficiency, and water quality. Moreover, by taking a proactive approach to sediment management, dam owners and operators can extend the lifespan of their infrastructure, ensuring that it continues to serve its intended purpose for years to come.

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