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RETAINED SOIL WALL SYSTEM DESIGN OVERVIEW. TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: MSE Wall – Bid Estimate.

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Presentation on theme: "RETAINED SOIL WALL SYSTEM DESIGN OVERVIEW. TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: MSE Wall – Bid Estimate."— Presentation transcript:

1 RETAINED SOIL WALL SYSTEM DESIGN OVERVIEW

2 TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: MSE Wall – Bid Estimate Quantities/Design/Design Drawings/Casting Drawings

3 TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: Redi-Span – Bid Estimate Quantities/Design/Shop Drawings

4 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

5 TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: Shuttabloc Retaining Wall – Bid Estimate Quantities/Design/Design Drawings/Shop Drawings

6 TRICON RETAINED SOIL WALL SYSTEM TEG ENGINEERING INTRODUCTION Product and Services: Soundwall - Bid Estimate Quantities/Design/Shop Drawings General Design – Bridge/Wall/Foundation/Structural

7 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 Drawings Plan/Elevation/Standard Details/Panel Finish Casting Drawings and Schedules Panel Casting Drawings/ Panel Anchor Locations/Panel Schedule/Soil Mat Schedule/Shipping List Inventory Quantities Spreadsheet Panel Schedule and Soil Mat Schedule in Excel Format

8 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

9 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

10 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 (<10 o ) 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

11 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

12 SAMPLE GENERAL NOTES SHEET

13 SAMPLE PLAN & ELEVATION SHEET

14 SAMPLE PLAN WITH ACUTE CORNER

15 ENLARGED DETAIL OF ACUTE CORNERS

16 SAMPLE PLAN WITH OBSTRUCTIONS

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18 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

19 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

20 PRECAST PANEL PRODUCTION

21 WALL INSTALLATION Determine Wall Alignment Perform any Required Foundation Improvements Cast Leveling Pad

22 WALL INSTALLATION Place Bottom Row of MSE Wall Panel Place Filter Fabric over Joints

23 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

24 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

25 WALL INSTALLATION Attach Bottom Row of Soil Mats Ensure Connection is Pulled Tight - Shim as Required

26 CrimpLock The Next Generation MSE Wall Connector

27 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

28 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

29 COMPLETED RETAINED SOIL WALL PROJECTS

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