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Concrete
Lifting
Pressure GroutingSlab JackingMagnum Piering
Project Renovation of Ivy Farms Apartments, Newport News, Virginia · Architect- Burkhart Thomas, P.C. · Geotechnical Engineer- Herbert and Associates, Ltd. · Structural Engineer- Donald Coghlan P.C. · General Contractor- Beacon Construction Company · Financing- Virginia Housing Development Authority
The apartment complex was built over a landfill around 1960. The project consists of one hundred and forty-four, two story, wood framed apartment units that have brick veneer exteriors. The exterior walls are on pilings with concrete grade beams. The interior slabs are floating on grade construction. There is severe to moderate interior settlement and voids between the slabs and sub-soils.
Herbert and associates recommended slab jacking and pressure grouting for the problem areas. Advanced Builders, Inc. designed an injection schedule and a layout grid to complete the following . . . Slab Jacking and Void Grouting- · Apartments- 54 total · Foyer/ Entrance Halls- 1 total Pressure Grouting to 11' Below Grade- · Apartments- 7 total ·
Foyer/ Entrance Halls- 1 total A total of 396 cubic yards of stabilizing cementitious
grout was utilized for the jacking and grouting process, which filled the voids
and achieved corrections of the slabs with lifts as great as 8". Exterior Problems- Several
of the units showed signs of exterior settlement, which consisted of cracking of
the foundation and masonry veneers. The
solution was to install Magnum 3" steel piers, with heavy-duty Magnum angle
brackets. The piers were installed
6' on center, as directed by the Architect, to stop further settlement and
stabilize the affected areas. · Magnum Piers Installed- 38 total · Average Depth- 39' deep · Average Ultimate Bearing Capacity- 30 kips · Average Working Bearing Capacity- 15 kips
Contact Information
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