CONTROLLED MODULUS COLUMNSRigid Inclusions

PROJECT OVERVIEWWhen the Frederick News Post located in Frederick, Maryland built a new three-story office building and newspaper production facility, a site analysis con-cluded that the soil conditions were not adequate to support the weight and size of the 100,000 square foot printing and distribution facility, while maintaining the settlement design tolerance. To support the foundation, Menard provided an inno-vative design-build solution for CMC Rigid Inclusions as an alternative to compaction grouting and piles for foundation support.

GROUND CONDITIONSThe site analysis showed that the site had poor soil conditions with very soft layers of compressible fill and soils on top of karstic

limestone commonly found in the area and characterized by sinkholes.

THE SOLUTION Menard proposed an innovative CMC Rigid Inclusions solution to support the build-ing columns and the slab-on-grade floors, as well as cap grout the top of the karstic limestone.

Menard designed a ground improvement system with on-board monitoring to cap grout the very soft layers on top of the limestone while simultaneously creating 12.5 inch diameter CMC Rigid Inclusion support elements with a 30 ton weight ca-pacity. The automated system — installed on the pump and inside the rig — guaran-teed the constant monitoring of the grout

THE FREDERICK NEWS POSTFrederick, MD

Owner:ACE Printing LLC

General Contractor:CDT Design Consultants, LLP

Duration of Work:10 weeks

Subsurface Conditions:Soft layers of compressible fill and soils on top of karstic limestone

Approximate Key Quantities:

CMC Rigid Inclusions 2,200

www.menardgroupusa.com

http://www.loopnet.com/Listing/16046035/351-Ballenger-Center-Drive-Frederick-MD/

CONTROLLED MODULUS COLUMN

PROJECT OVERVIEWWhen the Frederick News Post locatedin Frederick, Maryland built a new threestory-office building and newspaper production fa-cility, a site analysis concluded that the soil conditions were not adequate to support the weight and size of the 100,000 square foot printing and distribution facility, while main-taining the settlement design tolerance. To support the foundation, Menard provided an innovative design-build solution for Con-trolled Modulus Column (CMC) Rigid Inclu-sions as an alternative to compaction grout-ing and piles for foundation support.

GROUND CONDITIONSThe site analysis showed that the site had poor soil conditions with very soft layers of compressible fill and soils on top of karstic

limestone commonly found in the area and characterized by sinkholes.

THE SOLUTIONMenard proposed an innovative CMC Rigid Inclusions solution to support the building columns and the slab-on-grade floors, as well as cap grout the top of the karstic limestone.

Menard designed a ground improvement program utilizing on-board monitoring to cap grout the fractured layers on top of the lime-stone while simultaneously creating 12.5-inch diameter CMC Rigid Inclusions. The automated system — installed on the pump and inside the rig — guaranteed the constant monitoring of the grout pressure and volume, ensuring the filling of any voids and openings in the upper rock surface and reducing the

WICK DRAINS USWD

PROJECT OVERVIEWThe Craney Island Dredged Material Management Area was built in the 1950s as a disposal site to maintain deep water-ways for maritime traffic at Hampton Rods Harbor in Virginia. To meet the dual pur-pose of extending the life of Craney Island as a dredged material management area and providing land for the state-of-the-art marine terminal, the Virginia Port Authority and the U.S. Army Corps of Engineers con-structed cross dikes to expand Craney Island by 500 acres. To consolidate the sand fill and accelerate settlement, US Wick Drain in-stalled 12 million linear feet of prefabricated Vertical Wick Drains.

GROUND CONDITIONSThe Wick Drains were installed over water to

depths of more than 130 feet in very thick, soft clays.

An upper unit of thick Norfolk Clay overlaid a lower unit, up to 65 feet thick, of layered Norfolk Clays and sand. Below that were Yorktown Clays and St. Mary’s Formation.

THE SOLUTION Wick Drains were installed along the cross dikes to facilitate the drainage of water from the soft, saturated subsurface clays, speed up consolidation of the soft clays, and increase the shear strength of the sand fill. This ground improvement solution was also installed into the dredge material to form the land for the marine terminal.

The Wick Drains were installed in open water from a specialized barge with a sophisticated positioning and data collection system. The barge was designed with pipes installed into the deck to match the Wick Drain’s speci-fied spacing. This optimized production by limiting the number of times the barge was repositioned during installation. More than 100,000 individual Wick Drains were suc-cessfully installed which makes this project the largest and deepest barge installation of Wick Drains done worldwide.

SUMMARYFor the eastward expansion of Craney Island, US Wick Drain installed 12 million linear feet of Wick Drains over water in a specialized barge.

CRANEY ISLAND EASTWARD EXPANSIONCraney Island, VA

Owner:Virginia Port Authority and U.S. Army Corps of Engineers

General Contractor:Great Lakes Dredge and Dock

Duration of Work:24 weeks

Subsurface Conditions:thick, soft clays

Approximate Key Quantities:

Wick Drains 12,000,000 linear ft.

www.menardgroupusa.com

CONTROLLED MODULUS COLUMNSRigid Inclusions

PROJECT OVERVIEWWhen the Frederick News Post located in Frederick, Maryland built a new three-story office building and newspaper production facility, a site analysis con-cluded that the soil conditions were not adequate to support the weight and size of the 100,000 square foot printing and distribution facility, while maintaining the settlement design tolerance. To support the foundation, Menard provided an inno-vative design-build solution for CMC Rigid Inclusions as an alternative to compaction grouting and piles for foundation support.

GROUND CONDITIONSThe site analysis showed that the site had poor soil conditions with very soft layers of compressible fill and soils on top of karstic

limestone commonly found in the area and characterized by sinkholes.

THE SOLUTION Menard proposed an innovative CMC Rigid Inclusions solution to support the build-ing columns and the slab-on-grade floors, as well as cap grout the top of the karstic limestone.

Menard designed a ground improvement system with on-board monitoring to cap grout the very soft layers on top of the limestone while simultaneously creating 12.5 inch diameter CMC Rigid Inclusion support elements with a 30 ton weight ca-pacity. The automated system — installed on the pump and inside the rig — guaran-teed the constant monitoring of the grout

THE FREDERICK NEWS POSTFrederick, MD

Owner:ACE Printing LLC

General Contractor:CDT Design Consultants, LLP

Duration of Work:10 weeks

Subsurface Conditions:Soft layers of compressible fill and soils on top of karstic limestone

Approximate Key Quantities:

CMC Rigid Inclusions 2,200

www.menardgroupusa.com

http://www.loopnet.com/Listing/16046035/351-Ballenger-Center-Drive-Frederick-MD/

Owner: ACE Printing LLC

General Contractor: CDT Design Consultants, LLP

Duration of Work: 10 weeks

Subsurface Conditions: Soft layers of compressible fill and soils on top of karstic limestone

Approximate Key Quantities: CMC Rigid Inclusions 2,200

pressure and volume, ensuring the filling of any surficial voids and openings in the rock and re-ducing the risk of sinkholes.

More than 2,200 CMC Rigid Inclusions were in-stalled at a maximum depth of 40 feet for a total of over 30,000 linear feet. Menard completed the installation in a 38 day production schedule.

SUMMARY To support the foundation of a large print-ing facility, Menard designed an innovative Controlled Modulus Column™ (CMC) Rigid Inclusions solution to support the building and cap grout the top of karstic limestone to pre-vent sinkholes.

THE FREDERICK NEWS POST - FREDERICK, MD www.menardgroupusa.com

risk of sinkholes.

More than 2,200 CMC Rigid Inclusions were in-stalled at a maximum depth of 40 feet for a total of over 30,000 linear feet. Menard completed the installation in a 38 day production schedule.

SUMMARYTo support the foundation of a large printing fa-cility, Menard designed an innovative CMC Rig-id Inclusions solution to support the building and cap grout the top of karstic limestone to re-duce the risk of further sinkhole development.

pressure and volume, ensuring the filling of any surficial voids and openings in the rock and re-ducing the risk of sinkholes.

More than 2,200 CMC Rigid Inclusions were in-stalled at a maximum depth of 40 feet for a total of over 30,000 linear feet. Menard completed the installation in a 38 day production schedule.

SUMMARY To support the foundation of a large print-ing facility, Menard designed an innovative Controlled Modulus Column™ (CMC) Rigid Inclusions solution to support the building and cap grout the top of karstic limestone to pre-vent sinkholes.

THE FREDERICK NEWS POST - FREDERICK, MD www.menardgroupusa.com