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Geo-Drill Injection Anchor System Accessories
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Couplings |
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The Geo-Drill Injection Anchor Couplings have a unique tapered center stop which seals the Injection Bar connection to prevent grout leakage during simultaneous grouting and drilling operations. The internal stop design also assures a full positive thread connection in both Injection Bar ends while providing a matching end bearing between bars that reduces percussion energy loss to the drill bit. The couplings are machined from ASTM A29 grade C1045 high strength steel to provide 100% ultimate tensile or compression strength capacity of the installed anchorage. The coupling OD is tapered on both ends to allow drill cuttings and grout displacement during drilling while the ID has internal chamfers to assist alignment and connection of the bars.
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Nominal Bar
Diameter
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Outside
Diameter |
Overall
Length |
Part
Number |
32 mm
(1-1/4”) |
1-5/8”
(41 mm) |
6-1/4”
(158 mm) |
B7X2-32 |
38 mm
(1-1/2”) |
2"
(51 mm) |
7-5/8"
(194 mm) |
B7X2-38 |
51 mm
(2”) |
2-5/8"
(67 mm) |
8-1/2"
(216 mm) |
B7X2-51 |
76 mm
(3”) |
3-7/8"
(98 mm) |
9-7/8"
(251 mm) |
B7X2-76 |
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Hex Nuts |
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The Hex Nuts designed exclusively for the Geo-Drill Injection Anchor system are a full 100% ultimate tension or compression strength component. They are manufactured from a high strength steel complying with ASTM A108. Two nuts are normally used (above and below the plate) to secure the anchorage plate embedded in a foundation pour.
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Nominal Bar
Diameter
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Outside
Diameter |
Overall
Length |
Part
Number |
32 mm
(1-1/4”) |
1-3/4”
(44 mm) |
1-3/4”
(44 mm) |
B7X3-32 |
38 mm
(1-1/2”) |
2"
(51 mm) |
2"
(51 mm) |
B7X3-38 |
51 mm
(2”) |
3"
(76 mm) |
2-1/2"
(64 mm) |
B7X3-51 |
76 mm
(3”) |
4"
(102 mm) |
4-1/4"
(108 mm) |
B7X3-76 |
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R9F Hardened Washers |
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Nominal Bar
Diameter |
Outside
Diameter |
Inside
Diamter |
Thickness |
Part
Number
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32 mm
(1-1/4”) |
2-1/4"
(57 mm) |
1-3/8"
(35 mm) |
5/32"
(4.0 mm) |
R9F-10-436
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38 mm
(1-1/2”) |
3"
(76 mm) |
1-5/8"
(41 mm) |
5/32"
(4.0 mm) |
R9F-12-436
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51 mm
(2”) |
3-3/4"
(95 mm) |
2-1/8"
(54 mm) |
7/32"
(5.6 mm) |
R9F-16-436
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76 mm
(3”) |
5-1/2"
(140 mm)
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3-1/8"
(79 mm)
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5/16"
(7.87 mm)
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R9F-24-436
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Bearing Plates |
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Williams provides a large selection of bearing plates for the Geo-Drill Injection Anchors in ASTM A36 in grade 36 or ASTM A572 grade 50 steel. The bearing plate holes can be round for standard embedment applications or slotted for angled Injection Anchors installed through steel walers or in contact with a rock slope. We manufacture plates to any size specifications required by the project or Williams can design a bearing plate for your specific application. |
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Centralizers |
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The bar can be centralized in the drill hole on 10' centers by attaching a steel centralizer in front of the coupling during the drilling operation. Available plain or hot dip galvanized to ASTM A123. State drill hole diameter and bar size when ordering. |
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Drill Bits |
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HC Drill Bit |
Hardened cross cut drill bit, suitable for the majority of applications including narrow bands of soft rock.
Soil Types: Fills, Shales, and Gravels |
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HB Drill Bit |
Hardened hemispherical button profile drill bit suitable for gravels and medium strength rock.
Rock Types: Soft to Medium Rock |
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CC Drill Bit |
Tungsten carbide cross-cut drill bit. Excellent choice for majority of granular soils with mixed hard formations.
Soil Types: Fills, Gravels, and seamy rock formations. |
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CB Drill Bit |
Tungsten carbide hemispherical button drill bit for moderately strong to strong rock, boulders and rubble.
Rock Types: Mudstone, Limestone, and Granite |
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SC Drill Bit |
Two stage cross cut drill bit, suitable for loose ground and fills.
Soil Types: Sand, Clay and Medium Dense Gravels |
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Nominal
Bar
Diameter
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Available Drill Bit Diameters |
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CC |
HB |
CB |
SC |
32 mm
(1-1/4”) |
2” (51 mm)
2-1/2” (65 mm)
3” (76 mm)
4” (100 mm) |
2” (51 mm)
2-1/2” (65 mm)
3” (76 mm)
4” (100 mm) |
2”
(51 mm) |
2”
(51 mm) |
5”
(127 mm) |
38 mm
(1-1/2”) |
2” (51 mm)
2-1/2” (65 mm)
3” (76 mm)
4” (100 mm) |
2” (51 mm)
2-1/2” (65 mm)
3” (76 mm)
4” (100 mm) |
3”
(76 mm) |
3”
(76 mm) |
6”
(150 mm) |
51 mm
(2”) |
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3” (76 mm)
3-1/2” (90 mm)
4” (100 mm) |
4”
(100 mm) |
4”
(100 mm) |
6”
(150 mm) |
76 mm
(3”) |
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5” (125 mm)
6” (150 mm)
7” (175 mm) |
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7”
(175 mm) |
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 Williams Form Engineering Corp. All rights reserved. |
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