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Photo: LF Jennings

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Commercial

Mosaic at Merrifield – Parcel B

Falls Church, VA

Description

Mosaic at Merrifield is a 31-acre mixed-use development that includes retail, commercial, residential, office buildings, movie theater, hotel and two parks. The Parcel B 200,000 sf development includes a new Target store on top of a two story precast parking garage and ground floor mixed-use retail.

Challenge

Parcel B was found to have two to eight ft of undocumented fill consisting of lean clay and sandy silt with varying amounts of gravel and organics. The underlying residual soils consist of elastic silt, highly plastic clay and medium stiff to hard sandy silt. Column loads at the foundations range from 106 to 2213 kips.

Solution

The Geopier® system was selected to provide foundation support and control settlements for the heavily loaded columns and parking garage structure shear walls. A total of 1162 thirty-inch diameter Geopier elements were installed to depths of 10 to 26 ft to provide an increased bearing capacity of seven ksf. Special Dilatometer Tests were conducted to determine the depth of upper zone Geopier soil reinforcement required and evaluation of anticipated lower zone settlement to insure that total and differential settlements would be within the design one inch and half an inch, respectively.

Owner

Eskridge (E&A), LLC, EDENS (Developer)

General Contractor

L.F. Jennings, Inc

Architect

Mulvanny G2 Architecture

Structural Engineer

Keith W. Jacobson

Geotechnical Engineer

ECS Mid-Atlantic, LLC, Professional Service Industries, Inc (PSI)

Product

Geopier GP3® System

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Additional Commercial Projects

Lincoln Square Development

Philadelphia, PA

The Yards at Three Crossing

Pittsburgh, PA

The Adele

Washington, DC

Costco

Oceanside, NY

Navy Federal Credit Union Headquarters

Vienna, VA

REI @ Pike & Rose

North Bethesda, MD

Ambler Savings Bank

Ambler, PA

Village at Valley Forge

King of Prussia, PA

Home Depot

Cherry Hill, NJ

Potomac Yard Park North Pond Walls

Alexandria, VA

Court House Metro Plaza

Arlington, VA

Capital One Headquarters – Post and Panel Wall

McLean, VA

Village at Leesburg – Cobb Theater

Leesburg, VA

Target Store Slope Repair

Raleigh, NC

The Charlotte Midtown and The Metropolitan at Midtown

Charlotte, NC

Walmart Store #3701

Mount Olive, NC

Station 650 (Landbay J)

Alexandria, VA

Westfield Wheaton Costco

Wheaton, MD