• NCDOT Geotech Alerts

    NCDOT Geotech Alerts for revisions and additions to standards are sent via an email distribution list.  Please provide your name and email to be added to the Geotechnical Distribution List.

     

  
  
  
  
  
  
Summary of Changes
Settlement Gauge RecordNew4/15/2014Form
  • ​Records settlement gauge data for calculating incremental and total settlement
Drilled Pier Inspection Forms (Casing & Slurry Methods)Revised2/18/2014Form
  • ​Updates Western Regional Geotechnical Manager name
Sound Barrier Wall Foundation Recommendations MemoRevised2/18/2014Form
  • ​Updates GEU Unit Head name
  • Removes "Estimated Maximum Height" from recommendations table
Temporary Shoring Recommendations and Standard Shoring Drawings MemosRevised2/18/2014Form
  • ​Updates GEU Unit Head name
Pile Driving Equipment Data Form, Rock Core and Shelby Tube TransmittalsRevised1/31/2014Form
  • ​Updates contact information
Anchored, MSE, Soil Nail and Soldier Pile Walls With Back Slope TypicalsRevised1/21/2014Cell
  • ​Adds concrete ditch for back slope
  • Renames cells for clarity
Concrete Ditch Behind Wall DetailsNew1/21/2014Cell
  • ​Addresses concrete ditch behind retaining wall with back slope and slope protection for concrete facing and coping
13Geotextile for Pavement StabilizationRevised1/21/2014Provision
  • ​​Revises tensile strength terminology based on Table 1056-1 in Materials provision
SP10 R001MaterialsRevised1/21/2014Provision
  • ​​Adds Type IL blended cement to Section 1000
  • Changes geotextile acceptance in Section 1056 to NCDOT Approved Products List (APL)
  • Updates temporary wall terminology for Section 1056
  • Replaces Table 1056-1
453.01Standard CIP Gravity Retaining WallRevised1/21/2014Drawing
  • ​Adds concrete ditch for back slope
SP05 R010Aggregate StabilizationNew11/19/2013Provision
  • ​Replaces Section 510
  • Adds Class IV subgrade stabilization to Section 510
5,6,11,12Anchored Retaining Walls (LRFD), CIP Gravity Retaining Walls, Soil Nail Retaining Walls (LFD-ASD), Soldier Pile Retaining Walls (LRFD)Revised11/19/2013Provision
  • ​Changes joint spacing in concrete facing and CIP gravity walls to 10-12 ft
  • Makes minor language improvements for clarity
Concrete Barrier Rail With Moment Slab DetailsRevised11/19/2013Cell
  • ​Changes concrete barrier height to 42"
MSE Abutment Wall Typical, MSE Wall Leveling Pad Step Details, MSE Walls With Guardrail TypicalsRevised11/19/2013Cell
  • ​Clarifies leveling pad step details for MSE walls with panels
  • Makes minor drafting improvements
  • Renames cells for clarity
8MSE Retaining Walls (LRFD)Revised11/19/2013Provision
  • ​Adds geosynthetic strips ("geostrips") for reinforcement type
  • Clarifies abutment wall definition
  • Adds bearing pad thickness requirements
  • Adds producer requirements for precast panels and SRW units
  • Updates website links
  • Makes minor language improvements for clarity
Precast and Segmental Gravity Walls With and Without Back Slope Typicals & NotesRevised11/19/2013Cell
  • ​Changes ditch terminology to "slope protection" for back slope
  • Makes guardrail and pavement section optional for no back slope
  • Removes paved ditch note for precast gravity wall for clarity
9,10Precast Gravity Retaining Walls (LRFD), Segmental Gravity Retaining Walls (LRFD)Revised11/19/2013Provision
  • ​Changes ditch terminology to "slope protection" for back slope
  • Adds producer requirements for PRW and SRW units
  • Updates website links
14,16Reinforced Soil Slopes, Standard ShoringRevised11/19/2013Provision
  • ​Adds geogrids with "approved for provisional use" (only for secondary reinforcement for RSS) with default total reduction factor
  • Updates website links
SP05 R020Soil-Cement Base (Full Depth Reclamation)New11/19/2013Provision
  • ​​Adds full depth reclamation (FDR) to Section 542
Standard Geotechnical Summary TablesRevised11/19/2013Form
  • ​​Adds tables for geotextile for pavement stabilization and aggregate subgrade/stabilization
Standard Precast Gravity Wall NotesRevised11/19/2013Notes
  • ​Removes paved ditch note for clarity
1803.01Standard Reinforced Soil SlopeRevised11/19/2013Drawing
  • ​Adds geogrids with "approved for provisional use" for secondary reinforcement with default total reduction factor
  • Updates website links
453.02,03Standard Segmental Gravity WallsRevised11/19/2013Drawing
  • ​Changes ditch terminology to "slope protection" for back slope
  • Updates website links
1801.01,02Standard Temporary Shoring and WallRevised11/19/2013Drawing
  • ​Adds geogrids with "approved for provisional use" for temporary walls with default total reduction factor
  • Updates website links
17Temporary Soil Nail WallsRevised11/19/2013Provision
  • ​Adds temporary guardrail
High Mount FoundationsRevised10/29/2013Provision
  • ​Updates edition number for AASHTO specification
Overhead and Dynamic Message Sign FoundationsRevised10/15/2013Provision
  • ​Updates edition number for AASHTO specification
High Mount FoundationsRevised9/17/2013Provision
  • ​​Updates software version for gINT and LPILE and edition number for AASHTO specification
13Geotextile for Pavement StabilizationRevised8/20/2013Provision
  • Clarifies when to notify Engineer to sample and test subgrade soils
  • Addresses asphalt mixture temperatures at time of placement for asphalt base courses
18Rock Slope MaterialsRevised8/20/2013Provision
  • Addresses PVC coated double-twisted hexagonal mesh wire
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