Intech Anchoring Systems recently was asked to assist a partner that needed help underpinning a currently existing structure on a college campus. Read about how Intech was able to help with the problem by offering a unique solution featuring a custom-made tool.
The Problem
There is no single deep foundation system that can call itself the perfect fit for every situation. Soil conditions and access limitations can alter the needs of any project, and finding the right product requires recommendations from professional experts like the engineering team at Intech Anchoring. Some of the most difficult soil consists of elements like construction debris, boulders, and areas of collapsing earth. When you encounter these conditions, micropiles are often the best option.
A construction partner needed to excavate dirt from under an existing building that was undergoing renovations. This particular client lacked experience with underpinning a structure and needed additional guidance. Uncertain how to properly underpin the building without buckling the piles, they reached out to Intech Anchoring Systems to assist.
The Solution
A tricky problem required a unique solution, and Intech was up to the challenge! We developed a tieback connection using a steel plate bolted to an underpinning bracket and the helical pile. This custom engineered uplift restraint bracket required four anchor bolts fixed to the foundation to enhance the tension load. We installed the pile diagonally to hold the building during the excavation process. Our innovative design required one pile to stabilize the structure, minimizing installation time and limiting costs.
Were Any Delays Encountered?
Intech designed, ordered, and oversaw the custom underpinning tieback installation without encountering any delays.
Was the Partner Satisfied?
The partner was very satisfied with Intech’s solution and installation. Our innovative solution kept their project on schedule.
Helical Tieback Anchor FAQ
The partner was very satisfied with Intech’s solution and installation. Our innovative solution kept their project on schedule.
What Are Helical Tieback Anchors?
Tieback anchors are horizontal pieces that reinforce retaining walls, foundations, or earth-shoring walls.
How Are Helical Tieback Anchors Used?
There are three main uses for tiebacks. They are used to:
Stabilize Structures
Tiebacks can strengthen inclines that are at risk of sliding or collapsing.
Reinforce Foundations
Tieback anchors can be attached to underpinning brackets to support the building’s foundation when excessive excavation is required. The tieback anchors are inserted horizontally at a particular batter or angle then connected to the underpinning bracket.
Secure Structures
Tiebacks are durable anchors not limited by depth level; they can effectively reinforce structures no matter the soil.
How Are Tieback Anchors Installed?
Tieback anchors are rotated into the ground with rotary drilling equipment. The capacity is determined by reading the installation torque at a minimum depth and cross-referencing it to the holding capacity ratio. Each anchor has a maximum capacity depending on the size of the material.
What Are the Benefits of Using Tieback Anchors?
Tieback anchors are a popular choice among contractors because they offer a variety of advantages.
Weather Resistant
Tieback anchors are durable and are galvanized to resist aggressive soil.
Limited Excavation
Tieback anchors can be installed through an existing wall to tieback the wall with little to no soil excavation in certain situations.
Offer Immediate Loading Capacities
Helical tiebacks are installed with torque from a helical drive motor which can be measured and using that measured torque the capacity of the tieback anchor is immediately known.
What Brands of Tiebacks Does Intech Recommend?
Intech strives to offer the best selection of products for our clients. We strive for excellent customer service which means that we don’t work with just one manufacturer; Intech provides tieback anchors from two of the most trusted manufacturers.
Magnacore
Offering a tieback system that is capable of being installed in hard-to-reach areas, Magnacore’s tieback system is capable of penetrating all types of soils and rock. Magnacore systems have high production abilities and offer time and cost savings because of their simple installation.
CHANCE
Originally used primarily in the electrical industry, CHANCE tieback anchors have been adopted in civil construction because of their versatility. Intech engineers have worked with CHANCE tiebacks for years and understand their installation dynamics.
Why Use Intech as Your Supplier?
Intech Anchoring has warehouse locations in St. Louis and Detroit and offers large inventory quantities ready to ship. Intech provides a full-service partnership that stretches beyond the delivery of products. We can assist with installation, design drawing, and field training on the products we deliver. Our team members are available for on-site visits to ensure that the tools we supply are working correctly. Contact Intech today and see the difference we make for our partners.
