retained soil wall system ™ design overview

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:  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 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

Construction DrawingsPlan/Elevation/Standard Details/Panel Finish

Casting Drawings and SchedulesPanel Casting Drawings/ Panel Anchor Locations/Panel Schedule/Soil Mat Schedule/Shipping List

Inventory Quantities SpreadsheetPanel 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 LayersConnection for MSE Soil Reinforcement

Soil Reinforcing Mats – Galvanized Welded Wire MeshY 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 AggregateNon-Corrosive Backfill to Limit Corrosion of Soil Reinforcing MatsUnit Weight/Friction AngleLimits 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 < AllowableIncreasing Mesh Length (up to about 1.5xH) can Reduce Applied Bearing Pressure and Increase Sliding ResistanceRecommend 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/OffsetsFront Face Elevation Match up Plan and Elevation/Corner Stations/Kinks/Begin End of WallWall Alignment Line (Face of Panel/Face of Coping/Face of Barrier)Panels Finish

Wall Cross Sections – Coping/Moment Slab/Min. Mesh LengthCoping Type(C.I.P./Standard Precast/Half Connector)Coping Height/Embedment of Panel into CopingBackfill Limits/Requirements for Soil Mat LengthsDesign Cross Sections (Flat/Broken Backslope/Infinite Backslope)

Road Plans/Drainage Plans/Bridge PlansLocate Drainage Obstructions (Road Construction Plans and Drainage

Plans)Verify Road Plans and Drainage Plans MatchVerify Size of Drainage Inlets with Drain Details (Usually Standard Sheets)Locate Bridge Abutment/Piling or Drilled Shaft

Specifications - Special ProvisionsDesign 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/CornersPrecast 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 0.7xH1’ Length Increments (Where Feasible)No Less than 20’ (2 Panels) Per Design Case

Identify Construction IssuesTight Corners/Splaying MeshSkewed Stage Lines

TRICON RETAINED SOIL WALL SYSTEM™ 

CONSTRUCTION DRAWINGS Elevation View

Panel DesignationDesign Cases Identify Soil Mat DesignationCoping Per Work Order (Precast Verify Ordered Quantity)Penetrations/Obstructions/Miters/CornersQuantities (Total SFT/Panel SFT/Coping Length/Backfill)

Plan ViewShow Mesh Type & LengthShow Obstructions / Splayed Mesh

Design Cases and Mesh Callouts Soil Mesh Lengths Equal to or Less Than Bid LengthsDesign Cases Match Bid Design Cases (Use Bid Calculations where Possible)Minimize Changes in Mesh Longitudinal Sizes and Transverse Spacings

Detail Construction IssuesModify Standard Details to Fit ProjectAcute Corners - Skew/Splay Mesh Around ObstructionsShow Obstruction Sizes/Distances to Pile/Depth to Bottom of Abut FootingDetail Skewed/Splayed Mesh at Skewed Stage Lines

SAMPLE GENERAL NOTES SHEETSAMPLE GENERAL NOTES SHEET

SAMPLE PLAN & ELEVATION SHEETSAMPLE PLAN & ELEVATION SHEET

SAMPLE PLAN WITH ACUTE CORNERSAMPLE PLAN WITH ACUTE CORNER

ENLARGED DETAIL OF ACUTE CORNERSENLARGED DETAIL OF ACUTE CORNERS

SAMPLE PLAN WITH OBSTRUCTIONSSAMPLE PLAN WITH OBSTRUCTIONS

SAMPLE PLAN WITH OBSTRUCTIONSSAMPLE 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 StabilityDesign Case - Flat/Broken Back-Slope/Infinite Back-Slope/AbutmentCheck Overturning/Sliding/Bearing Pressure

Internal StabilitySimplified/Coherent GravityCheck Strength/Pullout

PRECAST PANEL PRODUCTIONPRECAST PANEL PRODUCTION

WALL INSTALLATIONWALL INSTALLATION

•Determine Wall Alignment

•Perform any Required Foundation Improvements

•Cast Leveling Pad

WALL INSTALLATIONWALL INSTALLATION

• Place Bottom Row of MSE Wall Panel

• Place Filter Fabric over Joints

WALL INSTALLATIONWALL 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 INSTALLATIONWALL 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 INSTALLATIONWALL INSTALLATION

•Attach Bottom Row of Soil Mats

•Ensure Connection is Pulled Tight - Shim as Required

CrimpLock™CrimpLock™“The Next Generation MSE Wall Connector”“The Next Generation MSE Wall Connector”

WALL INSTALLATIONWALL 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 INSTALLATIONWALL 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 PROJECTSCOMPLETED RETAINED SOIL WALL PROJECTS

COMPLETED RETAINED SOIL WALL PROJECTSCOMPLETED RETAINED SOIL WALL PROJECTS

COMPLETED RETAINED SOIL WALL PROJECTSCOMPLETED RETAINED SOIL WALL PROJECTS

COMPLETED RETAINED SOIL WALL PROJECTSCOMPLETED RETAINED SOIL WALL PROJECTS

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