Geotech Services
Structural foundation and retaining wall design guidelines are contained in the following memorandums:
AASHTO Load and Resistance Factor Design Policy (LRFD) For Bridge Substructures: Geotechnical Design Policy
- Spread Footing: Bearing Resistance and Settlement (Revised 12/01/10)
- Spread Footing: Limited Eccentricity
- Spread Footing: Sliding and Bearing Resistance
- Drilled Shafts: Axial Resistance (Revised 12/01/10)
- Drilled Shafts: Gravel and Gravelly Soils (Revised 12/01/10)
- Drilled Shafts: Lateral Analysis
- Cast-in-Place Walls: Analysis of ADOT Standard Case III
- Cast-in-Place Walls: Analysis of ADOT Standard Case IV
Mechanically Stabilized Earth (MSE) Walls Pre-approved Systems List
The systems listed below were approved by ADOT Geotechnical Services and listed on ADOT’s Approved Product List (APL). These products will remain in approved status until a new Approved Systems List (ASL) is created by Bridge Group. The new ASL will be based on the MSE Wall stored specification that was updated on 7/17/20, and published on 8/14/20 (Specification link is below). For information on the ASL, please contact Bridge Group Standards Engineer Amjad Alzubi.
| Product | ADOT Specific Requirements for Wall System | Manufacturer Contact |
|---|---|---|
| ARES Wall | Ares.pdf | Tensar International Corporation |
| KeySystem I Retaining Wall System | Keysystem.pdf | Keystone Retaining Wall Systems, LLC |
| MESA Block | Mesa.pdf | Tensar International Corporation |
| MSE Plus Concrete Panel Wall | MSEplusConc.pdf | SSL, LLC |
| MSE Plus Welded Wire Wall | MSEplusWW.pdf | SSL, LLC |
| Reinforced Earth Company (RECO) Concrete Panel Wall System | RECO.pdf | Reinforced Earth Company (RECO) |
| SINE Wall System | SINE.pdf | Inventure Civil |
Mechanically Stabilized Earth (MSE) Walls Design Support Documents
| Document Name | View Document as a PDF | Download Microstation DGN as ZIP |
|---|---|---|
| MSE Wall Stored Spec (929MSEW) | 929MSEW.pdf | |
| Figure 929-2.03(A): MSE Wall Compound Stability Search Zone Locations to Verify the Most Critical Failure Case for an MSE Wall with Level Backfill |
929-2.03-A.pdf | |
| MSE Wall Design Data sheet | MSE-Wall-Design-Summary-Sheet.pdf | MSE-Wall-Design-Summary-Sheet.zip |
The geotechnical project development and design manual below contains requirements for contract coordination, field investigation and testing requirements for ADOT's development processes:
