The Innovative Precast Retaining Wall Solution PRESENTED BY:

Adam T Baker, LHV Precast

NYS County Highway Superintendents

• The Stone Strong Story

• Concept

• Components

• Design Theory

• Construction Details

• Innovative Solutions

Precast Modular Block Retaining Walls

The Stone Strong Story

8’

3’

44”

Patent No. 6,796,098

The largest retaining wall block in the industry!

Size/Mass

- Gravity Retaining Walls

- ROW/Utility Issues

- Inherent Stability

- Visual Scale

Firebaugh Precast

Dillon, CO

Retail Development

Innovative Stone

Lincoln, NE

Capital Beach Erosion Control

MBO Precast

Middlesboro, MA

Oak Point Retirement Community

The Concept of Stone Strong

Innovative Stone

Lincoln, NE

Williamsburg Village Shoreline Protection

Innovative Stone

Omaha, NE

Harrison Street Reconstruction

LHV Precast

Rensselaer County, NY

Caretakers Rd., Walloomsac River

Versatility

- Flexible Geometry

- Adaptable

- Speed of Installation /

Productivity

The Concept of Stone Strong

8Size/Mass

8Versatility Engineered System

- Lifting Loops

- Recesses

- Voids

- Drainage

The Concept of Stone Strong

Precast

The Concept of Stone Strong

24 SF Block

96” x 36” x 44” Weight: 6,000 lbs

Patent No. 6,796,098

MBO Precast

Milford, MA

Innovative Stone

Nebraska City, NE

Systems Components

Egyptian Concrete

Carbondale, IL

Aspen Court

Innovative Stone

Lincoln, NE

Pioneer Business Park

24 SF Top Block

96” x 36” x 44” Weight: 5,400 lbs

Systems Components

Innovative Stone

Lincoln, NE

6 SF Block

48” x 18” x 44” Weight: 1,500 lbs

Systems Components

Built-In versatility

End/Corner Block

Patent No. 7,073,304

Corner Blocks

Accessories

Systems Components

Dual Face Block

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

Systems Components

Engineering Manual

Sound Engineering

Behind Stone Strong

www.stonestrong.com

Engineering Manual

www.stonestrong.com

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

HITEC Evaluation

AASHTO Bridge Manual

FHWA-NHI-00-043, MSE

Walls and Reinforced

Soil Slopes

Design Theory

Barbour Concrete Co.

Trinity Woods

Independence, Missouri

ECI Concrete

Mishawaka, Indiana

COULOMB

ACTIVE EARTH PRESSURE COEFFICIENT

2

2

2

coscos

sinsin1coscos

cos

β

Ka

Gravity Walls

Design Methodology

Gravity Walls - IBC

Gravity Walls - AASHTO

Load Resistance Factor Design (LRFD)

Gravity Walls

Innovative Stone

Missouri River Bridge

Yankton, South Dakota

Gravity Walls - LRFD

Gravity Walls - Vertical

Gravity Wall Analysis

Gravity Wall Analysis

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

Trial Wedge Method

Interaction Reports

Geogrid Reinforced Walls

Detail Library

- Web site

- CAD detail files available

Construction Details

www.stonestrong.com

Innovative Stone

Lincoln, NE

MBO Precast

Massachusetts

Corners / Radius

- 24 SF

Construction Details

Corners / Radius

- 6 SF

Construction Details

Innovative Stone

Lincoln, Nebraska

Office Park

Top End / Steps

Construction Details

Base / Embedment

Construction Details

Backfill Compaction

- Proper compaction (and moisture control) is critical part

of retaining wall construction.

Construction Details

Innovative Stone

Lincoln, Nebraska

Typical Compaction

Requirements

- No reduced compaction

requirement behind face

- Less sensitive to

displacement

- Able to support

compaction equipment

Construction Details

Innovative Stone

Omaha, Nebraska

Harrison Street

Integrated Structures

Innovative Solutions

LHV Precast

New York

County Bridge Abutment

Bridge Abutments

Innovative Solutions

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

MBO Precast

Massachusetts

Deerfield Crossing

Pipe Penetrations

Innovative Solutions

Innovative Stone

Omaha, NE

Shadow Lake Box Culvert

Hybrid Applications

Innovative Solutions

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