RETAINED SOIL WALL SYSTEM™
DESIGN OVERVIEW
TRICON RETAINED SOIL WALL SYSTEM™
TEG ENGINEERING INTRODUCTION
Product and Services:

MSE Wall – Bid Estimate Quantities/Design/Design Drawings/Casting Drawings
TRICON RETAINED SOIL WALL SYSTEM™
TEG ENGINEERING INTRODUCTION
Product and Services:

Redi-Span – Bid Estimate Quantities/Design/Shop Drawings
TRICON RETAINED SOIL WALL SYSTEM™
TEG ENGINEERING INTRODUCTION
Product and Services:
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Precast Bridges (Con-Struct/Double T) – Bid Estimate Quantities/
Design/Design Drawings/Shop Drawings
TRICON RETAINED SOIL WALL SYSTEM™
TEG ENGINEERING INTRODUCTION
Product and Services:

Shuttabloc Retaining Wall – Bid Estimate Quantities/Design/Design
Drawings/Shop Drawings
TRICON RETAINED SOIL WALL SYSTEM™
TEG ENGINEERING INTRODUCTION
Product and Services:

Soundwall - Bid Estimate Quantities/Design/Shop Drawings

General Design – Bridge/Wall/Foundation/Structural
TRICON RETAINED SOIL WALL SYSTEM™
MSE WALL SERVICES
MSE Wall Bid Estimates
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Determine Material Quantities for Precasters to Price Project
sft of panel/Lbs. of soil mats/Ft of Coping/Panel Finish
Review Contract Plans and Specifications for Items which effect Quantities or Design
Costs
Wall Geometry/Soil Properties/Type of Coping/Design Life/Obstructions
Determine Engineering Fee for Precaster to add to Project Cost
Standard Price per sft/Additional for Special Design and Aesthetic Details
MSE Wall Submittals
 Design Calculation Package
Design Cases per Design Height/Applied Foundation Pressure/Soil Mat Length
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Construction Drawings
Plan/Elevation/Standard Details/Panel Finish
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Casting Drawings and Schedules
Panel Casting Drawings/ Panel Anchor Locations/Panel Schedule/Soil Mat
Schedule/Shipping List
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Inventory Quantities Spreadsheet
Panel Schedule and Soil Mat Schedule in Excel Format
TRICON RETAINED SOIL WALL SYSTEM™
PARTS OF AN MSE WALL
Face Pieces– Precast Panels/Wire Facing/C.I.P. Concrete
Retains Soil Between Reinforcing Mat Layers
Connection for MSE Soil Reinforcement
Soil Reinforcing Mats – Galvanized Welded Wire Mesh
Y or H-mat (2 Wire)/W or K-Mat (3 Wire)
Y or H-mat at corner or obstructions
Backfill – Select Granular/Cement Stabilized/Coarse Aggregate
Non-Corrosive Backfill to Limit Corrosion of Soil Reinforcing Mats
Unit Weight/Friction Angle
Limits from Top of Leveling Pad to Top of Top Panel
Foundation Soils
Allowable Bearing Capacity Provided by Owner (Geotechnical Engineer)
Applied Bearing Pressure Determined by TEG - Applied < Allowable
Increasing Mesh Length (up to about 1.5xH) can Reduce Applied Bearing
Pressure and Increase Sliding Resistance
Recommend Undercutting Existing Soils if Allowable Bearing Pressure
cannot be met
TRICON RETAINED SOIL WALL SYSTEM™
READING CONTRACT PLANS
Wall Plan and Elevations – Lengths/Elevations/Stations/Offsets
Front Face Elevation
Match up Plan and Elevation/Corner Stations/Kinks/Begin End of Wall
Wall Alignment Line (Face of Panel/Face of Coping/Face of Barrier)
Panels Finish
Wall Cross Sections – Coping/Moment Slab/Min. Mesh Length
Coping Type(C.I.P./Standard Precast/Half Connector)
Coping Height/Embedment of Panel into Coping
Backfill Limits/Requirements for Soil Mat Lengths
Design Cross Sections (Flat/Broken Backslope/Infinite Backslope)
Road Plans/Drainage Plans/Bridge Plans
Locate Drainage Obstructions (Road Construction Plans and Drainage Plans)
Verify Road Plans and Drainage Plans Match
Verify Size of Drainage Inlets with Drain Details (Usually Standard Sheets)
Locate Bridge Abutment/Piling or Drilled Shaft
Specifications - Special Provisions
Design Requirements/Panel Finish/Construction Requirements
TRICON RETAINED SOIL WALL SYSTEM™
MSE WALL DRAWING PROCEDURES
BID DRAWINGS (AS REQUIRED)
Elevation View
Pattern Panel Layout/Leveling Pad/Corners
Precast Coping(12” Embed)/CIP Coping(3” Embed)/Moment Slab(See Plans)
Penetrations/Obstructions/Miters (<10o)
Quantities (Total SFT/Panel SFT/Coping Length)
Soil Mesh Lengths
Based on Bearing Pressure or 0.7xH
1’ Length Increments (Where Feasible)
No Less than 20’ (2 Panels) Per Design Case
Identify Construction Issues
Tight Corners/Splaying Mesh
Skewed Stage Lines
TRICON RETAINED SOIL WALL SYSTEM™
CONSTRUCTION DRAWINGS
Elevation View
Panel Designation
Design Cases Identify Soil Mat Designation
Coping Per Work Order (Precast Verify Ordered Quantity)
Penetrations/Obstructions/Miters/Corners
Quantities (Total SFT/Panel SFT/Coping Length/Backfill)
Plan View
Show Mesh Type & Length
Show Obstructions / Splayed Mesh
Design Cases and Mesh Callouts
Soil Mesh Lengths Equal to or Less Than Bid Lengths
Design Cases Match Bid Design Cases (Use Bid Calculations where Possible)
Minimize Changes in Mesh Longitudinal Sizes and Transverse Spacings
Detail Construction Issues
Modify Standard Details to Fit Project
Acute Corners - Skew/Splay Mesh Around Obstructions
Show Obstruction Sizes/Distances to Pile/Depth to Bottom of Abut Footing
Detail Skewed/Splayed Mesh at Skewed Stage Lines
SAMPLE GENERAL NOTES SHEET
SAMPLE PLAN & ELEVATION SHEET
SAMPLE PLAN WITH ACUTE CORNER
ENLARGED DETAIL OF ACUTE CORNERS
SAMPLE PLAN WITH OBSTRUCTIONS
SAMPLE PLAN WITH OBSTRUCTIONS
TRICON RETAINED SOIL WALL SYSTEM™
PANEL CASTING DRAWINGS
Standard Panel Drawings (Back Face Panel View)
Special Panel Drawings
Dimensions to Front Face of Panel
Show Shiplaps All Around
Show No-Shiplaps (Top/Bottom/Right/Left)
Show Panel X-Section for Miters
Show Individual Anchors & Row Spacing
Show Lifting Devices
TRICON RETAINED SOIL WALL SYSTEM™
MSE WALL DESIGN
AASHTO Design Requirements(Standard/LRFD)
External Stability
Design Case - Flat/Broken Back-Slope/Infinite Back-Slope/Abutment
Check Overturning/Sliding/Bearing Pressure
Internal Stability
Simplified/Coherent Gravity
Check Strength/Pullout
PRECAST PANEL PRODUCTION
WALL INSTALLATION
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Determine Wall Alignment
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Perform any Required Foundation
Improvements
•
Cast Leveling Pad
WALL INSTALLATION
•
Place Bottom Row of MSE Wall
Panel
•
Place Filter Fabric over Joints
WALL INSTALLATION
•
Brace Bottom Row of MSE Wall
Panels with External Bracing
•
Brace Panels for Alignment with
Wood Blocking at Corner of
Panels
•
Batter Panels Back for Anticipated
Movement During Backfilling
WALL INSTALLATION
•
Place and Compact Backfill to
Bottom Row of Soil Mat Elevation.
•
Do not Drive Equipment Directly
over Soil Mats. 3” Min Cover Rubber Wheeled Equipment
•
Take Care with Tracked
Equipment
WALL INSTALLATION
•
Attach Bottom Row of Soil Mats
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Ensure Connection is Pulled Tight
- Shim as Required
CrimpLock™
“The Next Generation MSE Wall Connector”
WALL INSTALLATION
•
Keep Equipment 3’ from Face of
Wall – Hand Compaction at Face
of Wall
•
Continue Placing Panels, Bracing,
Filter Fabric, Backfill, Compaction,
Soil Mats
•
Special Care at Sloped Walls
WALL INSTALLATION
•
Cast-in-Place Level-up Concrete
pad Top of Top Panels
•
Panels can be Cast to Follow
Slope of Wall but is not Common
•
Set Coping – No Mechanical
Connection Required
COMPLETED RETAINED SOIL WALL PROJECTS
COMPLETED RETAINED SOIL WALL PROJECTS
COMPLETED RETAINED SOIL WALL PROJECTS
COMPLETED RETAINED SOIL WALL PROJECTS
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