Anchors & Components
Rock & Earth Auger Anchors
Rock & Earth Auger Anchors deliver strong, versatile ground anchoring for manufactured and mobile home tie-down systems, as well as general applications like sheds, carports, and storm shelters, with helix designs optimized for penetrating and holding in rock, hard soils, clay, and mixed earth conditions.
- Types Rock & earth
- Soil classes 1 to 4b
- Heights 30″ to 60″
- Finishes Painted & galvanized
Made in USA by Oliver Technologies. Install per the written instructions and the authority having jurisdiction.
Anchor selection
Anchor selection chart.
Select the anchor by soil class and torque-probe test value. Letters in the chart match the anchors shown below.
| Product # | Application | Soil Class | Test Value | Rod Length (in.) |
Rod Diameter (in.) |
Helix Diameter (in.) & Qty | Finish | Stabilizer | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 4″ | 6″ | 7″ | ||||||||
| (A) OT30CDP | Rock | 1 | N/A (Solid Rock) | 30 | 3/4 | Painted | OT MSP 2P | |||
| (B) OT3044AP | Ground | 3 | 350-550 in-lbs. | 30 | 5/8 | 2 | Painted | OT MSP 2P | ||
| (C) OT3044BP | Ground | 3 | 350-550 in-lbs. | 30 | 3/4 | 2 | Painted | OT MSP 2P | ||
| (D) OT3044BPC | Ground | 3 | 350-550 in-lbs. | 30 | 3/4 | 2 | Painted | Integrated Cap | ||
| (E) OT3646BP | Ground | 4a | 276-350 in-lbs. | 36 | 3/4 | 1 | 1 | Painted | OT MSP 2P | |
| (F) OT3646BG | Ground | 4a | 276-350 in-lbs. | 36 | 3/4 | 1 | 1 | Galvanized | OT MSP 2P | |
| (G) OT3646BPC | Ground | 4a | 276-350 in-lbs. | 36 | 3/4 | 1 | 1 | Painted | Integrated Cap | |
| (H) OT4244BP | Ground | 4a | 276-350 in-lbs. | 42 | 3/4 | 2 | Painted | OT MSP 2P | ||
| (I) OT486A | Ground | 4a | 276-350 in-lbs. | 48 | 5/8 | 1 | Galvanized | OT MSP1 or 1055-19 | ||
| (J) OT486B | Ground | 4a | 276-350 in-lbs. | 48 | 3/4 | 1 | Galvanized | OT MSP1 or 1055-19 | ||
| (K) OT607B | Ground | 4b | 175-275 in-lbs. | 60 | 3/4 | 1 | Galvanized | OT MSP1 or 1055-19 | ||
Soil reference
Soil classification chart.
Use a torque probe to determine the soil class, then match it to the anchor in the chart above.
| Soil Class | Soil Description | Test Value | Recommended Anchors | Recommended Stabilizing Devices |
|---|---|---|---|---|
| 1 | Crystalline bedrock | N/A | OT30CDP | OT MSP 2P |
| 2 | Sedimentary and foliated rock | 550 in. lbs. | OT3044AP, OT3044BP, OT3646BP | OT MSP 2P |
| 3 | Sandy gravel and/or gravel (GW and GP) | 350 to 550 in. lbs. | OT3044AP, OT3044BP, OT3044BPC | OT MSP 2P (OT3044BPC has an Integrated Cap) |
| 4a | Sand, silty sand, clayey sand, silty gravel and clayey gravel (SW, SP, SM, SC, GM and GC) | 276 to 350 in. lbs. | OT3646BP, OT3646BG, OT3646BPC, OT4244BP, OT486A, OT486B | OT MSP 2P, or OT MSP1 / 1055-19 for OT486A and OT486B (OT3646BPC has an Integrated Cap) |
| 4b | Clay, sandy clay, silty clay, clayey silt, silt and sandy silt (CL, ML, MH and CH) | 175 to 275 in. lbs.** | OT607B | OT MSP1 or 1055-19 |
** Below 175 in. lbs., a professional engineer should be consulted. Torque probe readings are taken at the depth the anchor helix will sit. Refer to the home manufacturer’s setup manual or HUD 3285 for anchor spacing.
Installation
Installation Instructions.
Use the written installation instructions and applicable installation requirements for anchor component setup.
PDF · Written Instructions
Anchor Components Installation Instructions
Step-by-step installation guide for Oliver anchor components, including rock and earth auger anchors.
Need help selecting an anchor?
Call Oliver Technologies for help matching the right auger anchor to your soil class and installation.