Self-Drilling Hollow Bar Tieback Anchors for Walls & Excavation
Upgrade Your Projects with Magnacore® Hollow Bar Tieback Anchors
Experience the cutting-edge technology of Magnacore® in your tieback applications for unmatched performance and efficiency. Magnacore’s hollow bar system revolutionizes the way tiebacks are installed, providing exceptional stability and load-bearing capabilities.
When soil pressure threatens the stability of an excavation, retaining wall, or slope, hollow bar tieback anchors offer a proven, efficient solution. At Intech Anchoring Systems, we supply high-performance hollow bar tieback anchor systems designed to deliver reliable earth retention and slope stabilization across a wide range of ground conditions. From temporary shoring to permanent retaining walls, our systems combine ease of installation with long-term strength and corrosion protection to meet demanding engineering specifications.
Call 800-223-7015 to speak with a technical expert about your next hollow bar tieback anchor project.
What Are Hollow Bar Tieback Anchors?
Hollow bar tieback anchors are pre-engineered systems used to stabilize retaining walls, excavations, and slopes by transferring tensile forces from the unstable surface to more stable ground layers. The hollow steel bar serves as both the drilling rod and the grouting conduit, allowing simultaneous drilling and grouting in a single operation. This dual function makes installation faster, more efficient, and suitable for a variety of soil types, including granular soils and weak rock formations.
These systems are frequently used for earth retention in commercial construction, civil infrastructure, and geotechnical repair applications. Intech Anchoring Systems supplies complete hollow bar anchor packages that include rods, couplers, nuts, plates, and centralizers, along with specialty grout and installation accessories to ensure consistent performance in the field.
Benefits of Hollow Bar Tieback Anchors
Contractors, engineers, and owners choose hollow bar systems because they provide distinct advantages over conventional solid-bar anchors or casing systems.
- Single-step installation: Simultaneous drilling and grouting eliminate the need for casing, saving time and reducing equipment requirements.
- Versatile performance: Works effectively in difficult ground conditions, including collapsing soils, loose sands, and soft rock.
- High load capacity: The grout bond and steel reinforcement combine to provide strong tensile resistance.
- Corrosion protection: Hot-dip galvanized or epoxy-coated bars offer long-term protection for permanent installations.
- Minimal disruption: Small-diameter equipment allows access in confined spaces and reduces ground disturbance.
Intech’s hollow bar tieback anchor systems are compatible with leading drill rigs and grout pumps, making them a versatile solution for both new construction and repair applications.
How Hollow Bar Tieback Anchors Are Installed
The installation process for hollow bar tieback anchors is engineered for efficiency and reliability. Because the hollow bar serves as both the drill string and the anchor tendon, drilling, grouting, and anchoring occur in one continuous operation.
- Site evaluation: Engineers analyze soil conditions, load requirements, and design parameters to determine bar diameter, length, and grout mix.
- Drilling and grouting: The hollow bar is rotated into the ground using rotary percussion drilling. Grout is simultaneously injected through the hollow core, filling voids and creating a bonded anchor.
- Anchor setup: Once the grout cures, the bar is tensioned and secured with a bearing plate and nut to provide active support against earth pressure.
- Testing and verification: Load tests confirm that each anchor meets the design specifications for tensile strength and bond performance.
Because of this streamlined process, hollow bar anchors can be installed quickly, even in unstable or water-bearing soils, minimizing downtime on site and reducing overall project costs.
Engineering Support and Project Capabilities
Intech Anchoring Systems provides comprehensive material support and accessories for hollow bar tieback anchors, including:
- Supply of hollow bar systems, couplers, and anchor heads
- Grout materials, mixers, and pumping equipment
- Drill rig compatibility guidance and tooling packages
- Technical support for design and load testing
- On-site training and installation assistance
Every product we provide is backed by straightforward pricing and professional engineering support, ensuring consistency and clarity from design through delivery.
Construction and Infrastructure Applications for Hollow Bar Tieback Anchors
Hollow bar systems are suitable for a wide range of applications that require reliable tension capacity and permanent or temporary stabilization. They are commonly used in:
- Retaining and soldier pile wall support
- Excavation shoring for basements and tunnels
- Bridge abutment stabilization
- Slope and embankment reinforcement
- Foundation underpinning for repair or expansion projects
- Tunnel and shaft stabilization
- Marine and seawall reinforcement
- Construction dewatering support systems
These anchors are adaptable to multiple construction environments, from urban excavation sites to large-scale infrastructure projects, offering an efficient alternative to more complex anchoring systems.
Use Magnacore For Helical Tiebacks
Frequently Asked Questions About Hollow Bar Tieback Anchors
How deep can a hollow bar tieback anchor be installed?
Depth varies depending on soil conditions, load requirements, and bar type. Typical installations range from 10 to 60 feet, though deeper anchors are possible for high-load or specialized projects.
What sizes of hollow bar anchors are available?
Intech Anchoring Systems supplies hollow bars in multiple diameters and thread profiles to meet varying project needs. Common options include R25, R32, R38, and R51 sizes, each available with compatible couplers and accessories.
Can hollow bar tieback anchors be used in water-bearing soils?
Yes. Because the grout is pressure-injected through the hollow bar during drilling, it displaces water and consolidates loose material, allowing reliable anchoring even in saturated conditions.
Are these anchors suitable for permanent applications?
Absolutely. With corrosion protection such as hot-dip galvanization or epoxy coating, hollow bar tiebacks can serve as permanent structural supports that meet long-term durability requirements.
Does Intech provide engineering assistance?
Yes. Our in-house engineering team provides design support, technical drawings, and load calculations to ensure the system meets project specifications and safety factors.
Why Partner with Intech Anchoring Systems
Intech Anchoring Systems has earned a national reputation as a trusted provider of geotechnical and earth retention solutions. We partner with engineers, contractors, and construction firms to supply innovative products that meet the demands of modern construction while simplifying installation and reducing costs.
Here’s what sets Intech apart:
- Extensive inventory: We maintain a large stock of hollow bar systems, ensuring fast delivery and reduced lead times.
- Engineering support: Our technical specialists assist with design, testing, and on-site training.
- Proven performance: Intech systems are used on infrastructure, commercial, and residential projects across North America.
- Commitment to quality: All components meet or exceed ASTM and ISO standards for material strength and performance.
- Turnkey solutions: Beyond product supply, we provide equipment, accessories, and training to support every stage of installation.
Whether you’re stabilizing a slope, reinforcing a retaining wall, or supporting deep excavations, Intech Anchoring Systems delivers the products and expertise needed to get the job done efficiently and safely.
Lean on our industry experts to guide and provide the best product for your project.
Discuss Your Hollow Bar Tieback Anchor Project with Intech Anchoring Systems
Hollow bar tieback anchors offer unmatched efficiency and versatility for earth retention projects, combining fast installation with dependable strength. Partnering with Intech Anchoring Systems gives you access to premium materials and responsive technical support that keeps your project on schedule and within budget.
Call Intech Anchoring Systems today at 800-223-7015 to learn more about hollow bar tieback anchors or request a project consultation with our engineering team.
