| 8,9 | Reinforced Soil Slopes, Cellular Confinement Systems | | Revised | 9/17/2024 | Provision | - Makes changes associated with 2024 Standard Specifications
- Adds a new pay item, “Compost Blanket for Geocells”
|
| Sound Barrier Wall Foundation Recommendations Memo Template | Memo Link | Revised | 8/2/2024 | Form | - Updates GEU Unit Head name
- Revises recommendations table for latest Standard Sound Barrier Wall Foundation Selection Tables
|
| Geotechnical Design Cell Library | | Revised | 1/1/2024 | Cell | Revisions and additions to the Geotechnical Design Cell Library will no longer be recorded here but the cell library will continue to be updated in the future. The latest Geotechnical Design Cell Library is provided with the latest NCDOT Geotechnical Workspace.
|
| Geotechnical Foundation Tables | | Revised | 1/1/2024 | Form | Revisions and additions to the Geotechnical Foundation Tables will no longer be recorded here but the tables will continue to be updated in the future. The latest Geotechnical Foundation Tables Excel Sheet is available from the GEU Website here-
Cells, Details, and Forms (ncdot.gov)
|
| Geotechnical Summary Tables | | Revised | 1/1/2024 | Form | Revisions and additions to the Geotechnical Summary Tables will no longer be recorded here but the tables will continue to be updated in the future. The latest Geotechnical Summary Tables Excel Sheet is available from the GEU Website here-
Cells, Details, and Forms (ncdot.gov)
|
| Summary of Quantities Worksheet | | Revised | 1/1/2024 | Form | Revisions and additions to the Summary of Quantities Worksheet will no longer be recorded here but the worksheet will continue to be updated in the future. The latest Summary of Quantities Worksheet is available from the GEU Website here-
Cells, Details, and Forms (ncdot.gov)
|
| SP05 R008 | Aggregate Subgrade | Memo Link | Revised | 3/21/2023 | Provision | - Renames "Subbase" as "Subsoil" defined as the portion of the roadbed below the Class IV subgrade stabilization
- Replaces "Geotextile for Soil Stabilization, Type 4" with "Geotextile for Subgrade Stabilization, Type 5" and adds pay item for Geotextile for Subgrade Stabilization
|
| SP05 R017 | Aggregate Subgrade in Lieu of Chemical Stabilization | | Revised | 3/21/2023 | Provision | - Renames provision from "Class IV Subgrade Stabilization in Lieu of Chemical Stabilization" to "Aggregate Subgrade in Lieu of Chemical Stabilization"
- Adds reference to Type 2 Aggregate Subgrade
|
| SP10 R056 | Geosynthetics | | New | 3/21/2023 | Provision | - Updates Type 5 Geotextile to Class 4A Geotextile in accordance with AASHTO M288 and incorporates new AASHTO NTPEP SSGEO Work Plan
|
| SP05 R009 | Geotextile for Subgrade Stabilization | | New | 3/21/2023 | Provision | - Renames "Geotextile for Pavement Stabilzation" as "Geotextile for Subgrade Stabilization"
- Turns geotextile 90 degrees, parallel to survey line, with the minimum roll width required under roadway edges and shoulders nearest to fill slopes
|
| Geotechnical Summary Tables | | Revised | 2/3/2023 | Form | - Updates tables for Geotextile for Subgrade Stabilzation changes
|
| Summary of Quantities Worksheet | | Revised | 2/2/2023 | Form | - Updates pay item information for Aggregate Subgrade changes
|
| Concrete Barrier Rail With Moment Slab Details | | Revised | 10/19/2021 | Cell | - Adds note to align joints in rail with joints in wall facing
|
| Geotechnical Design Cell Library | | Revised | 10/19/2021 | Cell | - Adds Wall ID with corresponding instructions to structure borders
|
| Geotechnical Foundation Tables | Memo Link | New | 10/19/2021 | Form | - Microsoft Excel sheet with geotechnical foundation tables for the Structure plans
- Includes tables for pile, drilled pier, spread footing and micropile foundations
|
| 17 | Micropiles (LRFD) | | Revised | 10/19/2021 | Provision | - Adds option for ASTM A252 reinforcing casing with 80 ksi yield strength
|
| 3,4,5,6 | MSE, Anchored, Soil Nail and Soldier Pile Retaining Walls (LRFD) | | Revised | 10/19/2021 | Provision | - Redefines H, "Design Height and "Wall Height"
- Adds geostrip reinforcement for MSE walls
- Adds black base cap for paving on aggregate above and behind MSE, anchored and soldier pile walls
- Changes pH requirement for PET geogrid reinforcement for MSE walls from 5-8 to 4.5-9
- Updates seismic design criteria for MSE walls to be consistent with other previously updated wall provisions and current AASHTO & NCDOT Structures Management policies/guidelines
- Adds requirement that PP geogrids for MSE walls be made in the USA
- Eliminates HDPE bearing pads from MSE walls with panels
- Sets minimum steel gauge and grade for steel strip connectors for MSE walls with panels
- Clarifies measurement and payment for backfilling behind MSE, anchored and soldier pile walls
- Updates Soil Nail Retaining Walls provision for the latest editions of the AASHTO LRFD Bridge Design Specifications and AASHTO LRFD Bridge Construction Specifications
|
| SP04 R005 | Piles | Memo Link | New | 10/19/2021 | Provision | - Makes changes to Section 450 to implement new geotechnical foundation tables and pile order lengths for all prestressed concrete piles
|
| 10 | Rock Embankments | | Revised | 10/19/2021 | Provision | - Updates measurement and payment to avoid duplicate pay items in contracts
|
| 453.01 | Standard CIP Gravity Retaining Wall | | Revised | 10/19/2021 | Detail | - Redefines H, "Design Height" and "Wall Height"
|
| Standard Foundation Notes (LRFD) | | Revised | 10/19/2021 | Notes | - Adds new reworded pile sleeves note that was removed from MSE wall notes
- Removes about half the standard foundation notes and rewords some others for the new geotechnical foundation tables
|
| Standard MSE, Anchored, Soil Nail, Soldier Pile, Precast and Segmental Gravity Wall Cells | | Revised | 10/19/2021 | Cell | - Redefines H, "Design Height" and "Wall Height"
- Relabels "Backfill" material as "Retained" material for MSE, precast and segmental gravity walls
- Adds geostrip reinforcement for MSE walls
- Adds black base cap for paving on aggregate above and behind MSE, anchored and soldier pile walls
|
| Standard MSE, Anchored, Soil Nail, Soldier Pile, Precast and Segmental Gravity Wall Notes | | Revised | 10/19/2021 | Notes | - Redefines H, "Design Height" and "Wall Height"
- Relabels "Backfill" material as "Retained" material for MSE, precast and segmental gravity walls
- Adds seismic note for MSE walls for consistency with changes to MSE Wall provision for seismic criteria
- Removes pile sleeves note from MSE wall notes and adds new reworded pile sleeves note to standard foundation notes
|
| 454.01,02 | Standard Segmental Gravity Retaining Walls | | Revised | 10/19/2021 | Detail | - Redefines H, "Design Height" and "Wall Height"
- Increases maximum wall height to 5 ft by increasing minimum wall batter and moving traffic surcharge further behind wall face
|
| 11,12 | Standard Shoring and Temporary Soil Nail Walls | | Revised | 10/19/2021 | Provision | - Updates Temporary Soil Nail Walls provision to reflect previous and current applicable updates in the Soil Nail Retaining Walls provision
- Adds hollow bar nails as an option for temporary soil nail walls
- Updates neat cement grout requirements for temporary soil nail walls to be consistent with changes made previously in the Soil Nail Retaining Walls provisions
- Updates Standard Shoring provision for changes to NCDOT Geosynthetic Reinforcement Evaluation Program
|
| 1801.02 | Standard Temporary Wall | | Revised | 10/19/2021 | Detail | - Updates notes on sheet 2 to reflect changes to NCDOT Geosynthetic Reinforcement Evaluation Program
|
| SP11 R002 | Temporary Shoring | | Revised | 10/19/2021 | Provision | - Updates neat cement grout requirements to be consistent with changes made previously in the Anchored Retaining Walls provision
- Updates Standard Shoring provision for changes to NCDOT Geosynthetic Reinforcement Evaluation Program
|
| 17 | Micropiles (LRFD) | | New | 4/21/2020 | Provision | Standardizes
current Micropiles Project Special Provision Requires the
use of a prequalified Micropile Contractor and a prequalified Micropile Design
Consultant Conforms to
current AASHTO LRFD Bridge Design Specifications for LRFD micropile design Uses nominal wall thickness for reinforcing casings
Conforms to
current AASHTO LRFD Bridge Construction Specifications for micropile load
testing Specifies prime mill certified steel pipes for reinforcing casings that meet NCDOT
"Buy American" requirements
|
| Standard Micropile Notes | | New | 4/21/2020 | Notes | - Standardizes current micropile notes on plans to be consistent with new Micropiles (LRFD) provision
|
| Anchored and Soil Nail Retaining Wall Cells | | Revised | 12/17/2019 | Cell | - Adds seismic note to Anchored Wall and Soil Nail Wall Cells with standard notes
|
