The Magnacore® Self Drilling Anchor (SDA) from Intech Anchoring is designed to address challenging soil conditions where traditional micropiles may not be suitable. It is a hollow bar injection-bore micropile that offers an economical solution in situations such as collapsible soils, areas with large boulders, or other obstructions.

The micropile installation process involves a single, top-down operation. The hollow bar serves as the drill string, and a high-pressure, neat cement grout mixture is injected through the bar. The grout mixture acts as both the drilling medium and the reinforcement for the micropile. As the neat grout mix exits through grout ports located at the end of the sacrificial bit, it permeates into the surrounding loose soils.

This combination of injecting the neat grout mix and its subsequent permeation into the adjacent soils forms a competent reinforced grout column. The grout column provides structural support and enhances the load-bearing capacity of the micropile in challenging soil conditions. By using the injection-bore technique, hollow bar eliminates the need for open-hole drilling and allows for efficient installation even in difficult ground conditions.

Magnacore offers an economical and effective alternative for situations where conventional micropiles may encounter difficulties due to specific soil characteristics or obstructions in the ground.

Magnacore has a full line of hollow bars anchor rods to meet your project’s needs including:

• R32
• R38
• R51
• T40
• T52
• T76

Our standard stock length of bar are 4.92 ft (1.5 m) and 9.84 ft (3 m). The standard bar is non-galvanized. Galvanized bars can be ordered custom. 

Special orders can be placed for custom bar lengths, sizes, and bit sizes.

Magnacore’s full line of accessories:

• Couplers
• Hex Nuts
• Drill Bit Adapters
• Spherical Nuts
• Sleeved Pipe
• Centralizers
• Bearing Plates
• Bevel Washers

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