| 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
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| Standard Micropile Notes | | New | 4/21/2020 | Notes | - Standardizes current micropile notes on plans to be consistent with new Micropiles (LRFD) provision
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| 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
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| 3,5,6 | Anchored, Soldier Pile and Soil Nail Retaining Walls (LRFD) | | Revised | 12/17/2019 | Provision | - Updates Anchored and Soil Nail Wall Provisions for 2018 Standard Specifications
- Updates Soildier Pile Wall Provision for consistency with Anchored Wall and Soil Nail Wall Provisions
- Revises seismic criteria for anchored and soil nail walls to meet AASHTO and Structure Management Unit requirements
- Changes grout requirements for ground achors and soil nails to be consistent with Structure Bulletin and AASHTO soil nail wall ballot items
- Incorporates LRFD design for soil nail walls through AASHTO soil nail wall ballot items
- Incorporates Slide and new Snail software programs for soil nail wall analysis and design verification
- Incorporates AASHTO LRFD Bridge Construction Specifications for soil nail wall materials, corrosion protection and nail testing through AASHTO soil nail wall ballot items
- Clarifies traffic impact requirements for soil nail wall design
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| Geotechnical Summary Tables | | Revised | 12/17/2019 | Form | - Adds new table for horizontal drains
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| SP08 R017 | Horizontal Drains | | New | 12/17/2019 | Provision | - Creates new provision for horizontal drains with or without drain pipes to drain water from slopes and rock cuts and from behind retaining walls
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| 8 | Reinforced Soil Slopes | | Revised | 12/17/2019 | Provision | - Revises provision for new Geosynthetic Reinforcement Evaluation Program (formerly called Geogrid Evaluation Program)
- Updates link for list of approved geosynthetic reinf. (list was moved from the M&T website to the Geotech website) for primary geogrids
- Adds requirement for American made biaxial geogrids for secondary geogrids
- Increases minimum width/length of secondary/primary geogrids to 6'
- Removes option for splicing primary geogrids
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| Standard Anchored and Soil Nail Retaining Wall Notes | | Revised | 12/17/2019 | Notes | - Adds seismic note for consistency with changes to Anchored Wall and Soil Nail Wall Provisions for seismic criteria
|
| 817.01 | Standard Horizontal Drain | | New | 12/17/2019 | Detail | - Creates new standard detail for horizontal drains with or without drain pipes to drain water from slopes and rock cuts and from behind retaining walls
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| 1802.01,02 | Standard Reinforced Soil Slope with High Groundwater, Standard Reinforced Soil Slope with Low Groundwater | | Revised | 12/17/2019 | Detail | - Revises detail for new Geosynthetic Reinforcement Evaluation Program (formerly called Geogrid Evaluation Program)
- Updates link for list of approved geosynthetic reinf. (list was moved from the M&T website to the Geotech website) for primary geogrids
- Adds flood elevation to notes on High GW RSS detail
- Increases minimum width/length of secondary/primary geogrids to 6'
- Removes option for splicing primary geogrids
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| SP05 R008 | Aggregate Subgrade | | New | 5/15/2018 | Provision | - Designates current aggregate subgrade in Section 505 as a Type 1 Aggregate Subgrade and adds a Type 2 Aggregate Subgrade
- Includes thickness, proofrolling, compaction and undercutting requirements for each aggregate subgrade type
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| SP05 R017 | Class IV Subgrade Stabilization in Lieu of Chemical Stabilization | | Revised | 5/15/2018 | Provision | - Adds proofrolling requirement and aggregate subgrade type for Class IV Subgrade Stabilization
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| Geotechnical Summary Tables | | Revised | 5/15/2018 | Form | - Revises Summary of Aggregate Subgrade/Stabilization table to accommodate both aggregate subgrade types
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| 7 | Geotextile for Pavement Stabilization | | Revised | 5/15/2018 | Provision | - Adds proofrolling requirement and aggregate subgrade type for Class IV Subgrade Stabilization
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| SP04 R002B | Alternate Bridge Approach Fills for Integral Abutments | | New | 1/16/2018 | Provision | - Addresses new bridge approach fill for integral abutments (2018 Roadway Standard Drawing No. 422.03)
- Includes Contractor's option for new Type A Alternate Approach Fill for Integral Abutments
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| SP04 R002A | Bridge Approach Fills | | Revised | 1/16/2018 | Provision | - Addresses new bridge approach fills (2018 Roadway Standard Drawing No. 422.01 and 422.02 and Roadway Detail Drawing No. 422D10)
- Includes 3 new bridge approach fill types (Type I Standard Approach Fill, Type II Modified Approach Fill and Type III Reinforced Approach Fill for MSE Abutments)
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| SP05 R017 | Class IV Subgrade Stabilization in Lieu of Chemical Stabilization | | Revised | 1/16/2018 | Provision | - Adds substitution is not allowed for chemically stabilized sections with geotextile for pavement stabilization
- Makes minor updates for 2018 Standard Specifications
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| 16 | Compaction Grouting | | New | 1/16/2018 | Provision | - Addresses compaction grouting to stabilize subgrades and embankments and prevent future subsidence
- Requires the use of a prequalified Subsurface Grouting Contractor
- Pays for compaction grouting in cubic feet of grout pumped and linear feet of grout pipe installed
|
| SP09 R005 | Foundations and Anchor Rod Assemblies for Metal Poles | | Revised | 1/16/2018 | Provision | - Adds standard foundation for light standards
- Makes minor updates for 2018 Standard Specifications
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| Geotechnical Design Cell Library | | New | 1/16/2018 | Cell | - Removes Standard Embankment Monitoring and Rock Plating Details because these details are Roadway Standard Drawings No. 235.01 and 275.01, respectively, in the 2018 Roadway Standard Drawings
- Revises Standard CIP and Segmental Gravity Wall Detail Nos. and CIP, Segmental and Precast Gravity Wall Cells and Notes because these wall types are Sections 453, 454 and 455, respectively, in the 2018 Standard Specifications
- Revises Notes for the Concrete Barrier Rail with Moment Slab Cell because barrier rails with moment slabs are incorporated into Section 460 in the 2018 Standard Specifications
- Revises Soldier Pile Wall Cell and Note because Section 442 is rewritten in the 2018 Standard Specifications
- Revises MSE Wall Notes and MSE Abutment Wall Cells because bridge approach fill details and provisions will be significantly changed for 2018 lettings
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| Geotechnical Summary Tables | | Revised | 1/16/2018 | Form | - Revises footnote for Summary of Aggregate Subgrade/Stabilization table
- Adds Class IV Subgrade Stabilization to Summary of Geotextile for Pavement Stabilization table
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| 7 | Geotextile for Pavement Stabilization | | Revised | 1/16/2018 | Provision | - Adds Class IV Subgrade Stabilization over Geotextile for Pavement Stabilization for pavement sections with asphalt base or surface course
- Makes minor updates for 2018 Standard Specifications
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| 4 | MSE Retaining Walls (LRFD) | | Revised | 1/16/2018 | Provision | - Revises provision for new Type III Reinforced Approach Fill for MSE Abutments
- Removes restriction for 57 stone with geosynthetic reinforcement since Geogrid Evaluation Program includes full scale damage testing from NTPEP Evaluations
- Makes minor updates for 2018 Standard Specifications
|
| 8,9 | Reinforced Soil Slopes, Cellular Confinement Systems | | Revised | 1/16/2018 | Provision | - Makes minor updates for 2018 Standard Specifications and other Department changes
- Revises material requirements for geocell tendons and crest anchorages
- Expands and further defines design requirements for cellular confinement systems
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| SP14 R004 | Roadway Lighting Foundations | | New | 1/16/2018 | Provision | - Combines 2012 Roadway Standard Provision "High Mount Foundations" with Section 1405 "Standard Foundation" that was removed from the 2018 Standard Specifications
- Addresses High Mount Foundation (2018 Roadway Standard Drawing No. 1402.01) and Standard Foundation (2018 Roadway Standard Drawing No. 1405.01)
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| Standard Foundation Notes (LRFD) | | Revised | 1/1/2018 | Notes | - Adds new note for MSE abutment walls
- Updates notes for 2018 Standard Specifications
|
| Summary of Quantities Worksheet | | Revised | 11/29/2017 | Form | - Updates pay item information for 2018 Standard Specifications and Special Provisions
- Adds Class IV Subgrade Stabilization for geotextile for pavement stabilization
|
| 3,9,10 | Anchored Retaining Walls (LRFD), Soil Nail Retaining Walls (LFD-ASD), Soldier Pile Retaining Walls (LRFD) | | Revised | 5/16/2017 | Provision | |
| Anchored, Soil Nail and Soldier Pile Wall Typicals | | Revised | 5/16/2017 | Cell | |
| Drilled Piers (LRFD) | | Revised | 5/16/2017 | Provision | |
