Solid Earth Technologies - We make the earth stand still
 
Multi-Generational Bldg, Burlington, VT

HELICAL PULLDOWN micropile photo - Multi-Generational Bldg, Burlington, VT Soil Foundation Problem:

There was a layer of fill under part of the building consisting mainly of cinders and ash as deep as 27 feet. A 5 foot high reinforced concrete wall was constructed. Some of the foundation wall had settled more than 5 inches before framing began.

Solid Earth's Solution:
 We installed CHANCE® HELICAL PULLDOWN™ micropiles and performed a load test. Each pile was rated for a 35 kip working load and a 70 kip ultimate capacity. A total of 75 micropiles were installed, 35 through holes cored in the footing, then attached to the foundation walls by epoxy-embedded rebar and concrete haunches.

To support the column load and structural slab, 40 CHANCE® HELICAL PIER® Foundation Systems screw piles with new construction brackets were installed.

 

Lafayette Center, Kennebunk, ME

Elevator Shaft photo Soil Foundation Problem:
 The four-story elevator and stairway tower was originally constructed on organic soils near a river. It settled and rotated away from the building creating a 4 inch gap at the top between old and new portions of the building.

Solid Earth's Solution:
 We installed 12 HELICAL PIER® anchors to a 15 foot depth. A Case backhoe with a 10,000 ft.-lb. hydraulic drive head was used to screw the piers into the soil. Heavy-duty foundation repair brackets were installed on top of the piers and fastened to the bottom of the foundation. Inside the elevator pit we installed 5 SS5 HELICAL PIER® anchors with standard foundation repair brackets.

lifting the building After all piers were installed, a series of jacking tools and 50-ton hydraulic jacks were set on the piers. Forces were applied simultaneously to the jacks to start lifting the building. By the end of the day, the elevator building had been lifted to near its original position.

 

 

 

Briggs Gymnasium—Harvard

Soil Foundation Problem:
 The existing concrete floor with a base, of organic fill and dense sand was not suitable to support columns for a new mezzanine in the gymnasium.

Briggs Gymnasium—Harvard Solid Earth's Solution:
 We removed the concrete floor where the piers were to be installed. A Bobcat with a 20,000 ft.-lb. hydraulic drive head was used to install 25 piers, each with 10 and 12 inch diameter helical plates. Each pier was installed to a depth of 10 to 12 feet into dense sand, for a minimum of ultimate capacity of 45 kips.

We then cast pier caps to complete the foundation in three days without major disruptions at a cost savings versus alternate methods considered.

 

Other Solid Earth Technologies Clients Include:
  • Amherst Town Hall, Amherst NH

  • Lebanon City Hall and Opera House, Lebanon NH

  • Grapone Auto Dealership, Concord NH

  • Husky Manufacturing, Milton, VT

  • Saint Mary's Bank, Manchester NH

  • Mill Bank Elderly Housing, North Hampton MA

  • Bank of NH, Nashua NH

  • Snow Inn, Harwichport MA

  • Colby-Sawyer College, New London NH

  • Quincy Waste Water Treatment Plant Quincy MA

  • Hope Cemetery Office Buildings, Worcester MA

  • Franciscan Children's Hospital, Brighton MA

  • Merrimack Valley Hospital, Haverhill MA

  • Mines Falls Park Walkway, Nashua NH

  • Charles River Walkway/Boardwalk, Waltham/Cambridge MA

  • Brentwood Development Athletic Facility, Tewksbury MA

  • Wing-Fook Funeral Home, Boston MA

  • Harvard Commons Housing Project, Mattapan MA

     

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