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The Innovative Precast
Retaining Wall Solution
PRESENTED BY:
Adam T Baker, LHV Precast




 NYS County Highway Superintendents
Precast Modular Block
Retaining Walls
• The Stone Strong Story
• Concept
• Components
• Design Theory
• Construction Details
• Innovative Solutions
The Stone Strong Story
 The largest retaining wall block in the industry!




 3’


                       8’                            44”

Patent No. 6,796,098
The Concept of
Stone Strong                             Firebaugh Precast
                                                 Dillon, CO
                                        Retail Development
Size/Mass

- Gravity Retaining Walls
- ROW/Utility Issues
- Inherent Stability
- Visual Scale                                 MBO Precast
                                            Middlesboro, MA
                            Oak Point Retirement Community




                                           Innovative Stone
                                                Lincoln, NE
                              Capital Beach Erosion Control
The Concept of
Stone Strong                                        Innovative Stone
                                                         Lincoln, NE
                            Williamsburg Village Shoreline Protection
Versatility

- Flexible Geometry
- Adaptable
- Speed of Installation /
  Productivity                                          LHV Precast
                                             Rensselaer County, NY
                                   Caretakers Rd., Walloomsac River




                                                    Innovative Stone
                                                         Omaha, NE
                                      Harrison Street Reconstruction
The Concept of
 Stone Strong
8Size/Mass

8Versatility
Engineered System

- Lifting Loops
- Recesses
- Voids
- Drainage
The Concept of
Stone Strong
Precast
Systems
Components
24 SF Block
96” x 36” x 44” Weight: 6,000 lbs




                                     Innovative Stone
                                    Nebraska City, NE


                                        MBO Precast
                                         Milford, MA


Patent No. 6,796,098
Systems
Components
24 SF Top Block
96” x 36” x 44” Weight: 5,400 lbs
                                    Egyptian Concrete
                                    Carbondale, IL
                                    Aspen Court




                                             Innovative Stone
                                                  Lincoln, NE
                                        Pioneer Business Park
Systems
Components                          Innovative Stone
                                         Lincoln, NE


6 SF Block
48” x 18” x 44” Weight: 1,500 lbs
Systems
Components
Accessories

Dual Face Block        End/Corner Block




Corner Blocks




Patent No. 7,073,304
                                          Built-In versatility
Systems
Components
Mass Extender Block
96” x 36” x 56” Weight: 10,000 lbs
Systems
Components
24SF-62 Block
96” x 36” x 62” Weight: 6,600 lbs
Systems
Components
24SF-86 Block
96” x 36” x 86” Weight: 7,400 lbs
Behind Stone Strong
Engineering Manual
Sound Engineering




             www.stonestrong.com
Engineering Manual




        www.stonestrong.com
HITEC Evaluation
Third-party review
Rigorous review
by committee of
national experts
HITEC Evaluation
What DOT can take from the report:
- Evidence of conformance w/ AASHTO methodologies
- Rigorous technical review
- Viable alternative to traditional retaining systems
Design Theory
AASHTO Bridge Manual
FHWA-NHI-00-043, MSE
Walls and Reinforced
Soil Slopes



                       Barbour Concrete Co.
                       Trinity Woods
                       Independence, Missouri




                       ECI Concrete
                       Mishawaka, Indiana
Gravity Walls
  Design Methodology




COULOMB
ACTIVE EARTH PRESSURE COEFFICIENT

                          cos2
Ka                                                2
          2                       sin   sin
      cos      cos         1
                                 cos    cos   β
Gravity Walls - IBC
Gravity Walls - AASHTO
Gravity Walls
       Load Resistance Factor Design (LRFD)




Innovative Stone
Missouri River Bridge
Yankton, South Dakota
Gravity Walls - LRFD
Gravity Walls - Vertical
Gravity Wall Analysis
Gravity Wall Analysis
Trial Wedge Method
Well established methodology
to resolve complex loading
conditions & geometry
Not commonly used due to
computational effort
More accurate assessment of
actual load applied outside of
Coulomb contributory area
Variation of Coulomb
technique
Still consistent with AASHTO
and other standards
Geogrid Reinforced Walls
Interaction Reports
Construction Details
Detail Library
- Web site                     www.stonestrong.com
- CAD detail files available
Construction Details
Corners / Radius
- 24 SF
                         MBO Precast
                        Massachusetts




                       Innovative Stone
                            Lincoln, NE
Construction Details
Corners / Radius
- 6 SF
Construction Details
Top End / Steps




Innovative Stone
Lincoln, Nebraska
Office Park
Construction Details
Base / Embedment
Construction Details
Backfill Compaction
- Proper compaction (and moisture control) is critical part
  of retaining wall construction.
Construction Details
Typical Compaction
Requirements
- No reduced compaction
  requirement behind face
- Less sensitive to
  displacement
- Able to support
  compaction equipment       Innovative Stone
                            Lincoln, Nebraska
Innovative
Solutions
Integrated Structures




                         Innovative Stone
                        Omaha, Nebraska
                           Harrison Street
Innovative
Solutions
Bridge Abutments


                              LHV Precast
                                 New York
                   County Bridge Abutment
Application of Design & Assembly Of Components
Orange Co Bull Mill Bridge
Orange Co Bull Mill Bridge
Orange Co Bull Run Bridge
Orange Co Bull Mill Bridge
Orange Co Bull Run Bridge
Innovative
Solutions
Pipe Penetrations




                 MBO Precast
               Massachusetts
            Deerfield Crossing
Innovative
Solutions
Hybrid Applications




                      Innovative Stone
                      Omaha, NE
                      Shadow Lake Box Culvert
Engineered Solution
Orange Co Rte 105 – Hurricane Irene
Orange Co Rte 105
Hamilton Co
Dry Brook Rd Bridge Ulster Co
Cascade Brook – Hurricane Irene
Cascade Brook Ulster Co

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The Innovative Precast Retaining Wall Solution