Magnacore Self-Drilling Anchors

The Magnacore® Self Drilling Anchor (SDA) from Intech Anchoring is a hollow bar injection-bore micropile that serves as an economical solution for challenging soil conditions where installing conventional micropiles may not be the best option. For example, those with collapsible soils (those not conducive to open-hole drilling), large boulders, or other obstructions.


The micropile is formed in a single, top-down operation by the injection of a high-pressure, neat cement grout mixture, which is pumped through the bar and serves as the drill string. The neat grout mix exits through grout ports at the end of the sacrificial bit and permeates into the looser adjacent soils. This mix and permeation are what forms the competent reinforced grout column.

Magnacore Products & Applications

Magnacore anchors are self-drilling, meaning that there is no pre-drilling required and grouting is part of the installation process.

Magnacore micropiles are suitable for a variety of applications and are particularly useful with projects launched in areas with limited access or weak soil. Micropiles have become a preferred method of deep foundation stabilization for their reliability, versatility, and efficiency.

A tieback is a horizontal rod used to reinforce retaining walls for stability. With one end of the tieback secured to the wall, the other end is anchored into the earth with sufficient resistance. By utilizing Magnacore SDAs for tiebacks, you can save time and is more cost effective with the quick, efficient, all-in-one installation.

Earth retention systems are constructed to provide support where deep excavations are required or slope stability is a concern. The design of these systems must consider movement control, stability during construction, and wall drainage. Magnacore can be used for jobs specified to stabilize slopes, for soldier pile and lagging, and tieback anchors.

Solid Bar vs. Hollow Bar

Solid Bar

Magnacore SDA Hollow Bar

How To Install Magnacore

Magnacore Applications

Benefits of SDAs

Magnacore Components

Magnacore Sacrificial Bits

The holes in each bit allow the grout/drilling solution to flow as the SDA is advanced, simultaneously creating the column.

  • Carbide Cross Cut Bit for softer sedimentary rocks such as marls, mudstones, siltstone
  • Carbide Button Bit for sand, fills, gravel
  • Clay Bit  for clay, soft soil, marls, loose sand, or gravel
  • Carbide Tri-Blade for competent ground, strong rock
  • Tri-Blade for chalk, gravel

Magnacore Bar & Accessory Options

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

Magnacore Specifications

Bar Type Outer Diameter Inner Diameter Area Ultimate Load (Pu) Yield Load (Py) Ultimate Stress (Fu) Yield Stress (Fy) Weight
MCR32/15 1.26 in
    (32 mm)
    0.59 in
      (15 mm)
      0.79 in2
        (510 mm2)
        81 kips
          (360 kN)
          63 kips
            (280 kN)
            102 ksi
              (706 MPa)
              80 ksi
                (549 MPa)
                2.69 lbs/ft
                  (4.00 kg/m)
                  MCR38/18 1.50 in
                    (38 mm)
                    0.71 in
                      (18 mm)
                      1.17 in2
                        (752 mm2)
                        124 kips
                          (550 kN)
                          101 kips
                            (450 kN)
                            106 ksi
                              (731 MPa)
                              87 ksi
                                (598 MPa)
                                3.96 lbs/ft
                                  (5.90 kg/m)
                                  MCR51/29 2.01 in
                                    (51 mm)
                                    1.14 in
                                      (29 mm)
                                      1.78 in2
                                        (1146 mm2)
                                        180 kips
                                          (800 kN)
                                          142 kips
                                            (630 kN)
                                            101 ksi
                                              (698 MPa)
                                              80 ksi
                                                (550 MPa)
                                                6.05 lbs/ft
                                                  (9.00 kg/m)
                                                  MCT40/20 1.57 in
                                                    (40 mm)
                                                    0.79 in
                                                      (20 mm)
                                                      1.22 in2
                                                        (790 mm2)
                                                        121 kips
                                                          (539 kN)
                                                          97 kips
                                                            (430 kN)
                                                            99 ksi
                                                              (682 MPa)
                                                              79 ksi
                                                                (544 MPa)
                                                                4.17 lbs/ft
                                                                  (6.20 kg/m)
                                                                  MCT40/16 1.57 in
                                                                    (40 mm)
                                                                    0.63 in
                                                                      (16 mm)
                                                                      1.42 in2
                                                                        (917 mm2)
                                                                        148 kips
                                                                          (560 kN)
                                                                          118 kips
                                                                            (525 kN)
                                                                            104 ksi
                                                                              (720 MPa)
                                                                              83 ksi
                                                                                (573 MPa)
                                                                                4.84 lbs/ft
                                                                                  (7.20 kg/m)
                                                                                  MCT52/26 2.05 in
                                                                                    (52 mm)
                                                                                    1.02 in
                                                                                      (26 mm)
                                                                                      1.92 in2
                                                                                        (1236 mm2)
                                                                                        209 kips
                                                                                          (929 kN)
                                                                                          164 kips
                                                                                            (730 kN)
                                                                                            109 ksi
                                                                                              (752 MPa)
                                                                                              86 ksi
                                                                                                (591 MPa)
                                                                                                6.52 lbs/ft
                                                                                                  (9.70 kg/m)
                                                                                                  MCT76/45 2.99 in
                                                                                                    (76 mm)
                                                                                                    1.77 in
                                                                                                      (45 mm)
                                                                                                      3.89 in2
                                                                                                        (2510 mm2)
                                                                                                        427 kips
                                                                                                          (1900 kN)
                                                                                                          337 kips
                                                                                                            (1500 kN)
                                                                                                            110 ksi
                                                                                                              (757 MPa)
                                                                                                              87 ksi
                                                                                                                (598 MPa)
                                                                                                                13.24 lbs/ft
                                                                                                                  (19.70 kg/m)

                                                                                                                  Magnacore Micropile & Anchoring System

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                                                                                                                  Tim Comb


                                                                                                                  Tim is the President of Intech Anchoring and has 25 years of experience in the Civil Engineering and Geostructural Industry. Tim has developed extensive industry knowledge by working to support the needs of specialty contractors at each and every business level. Tim’s diverse industry background has given him exposure to a wide variety civil construction projects, ranging from the simplest residential applications to the most complex commercial and industrial projects. Coupled with a highly skilled and educated team, Tim focuses on providing the highest quality products and solutions to Intech Anchoring’s customers in order to consistently exceed expectations.