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Settling Foundation Repair - Nashua, NH

February 17, 2010


Specialty drilling equipment was required to drill through the buried rubble at this site. Pilings advance to almost 20 feet to encounter bedrock.


High volume of cement grout was required to construct the drilled micro-piles. An Obermann pump was utilized to mix and pump the cement grout.

Project:  Significant foundation settlement was experienced in the rear of the house. The homeowner noticed that floors were sloping, along with cracks developing in the foundation and windows sticking. These symptoms were first observed over ten years ago and progressively got worse over time until something needed to be done.

Soil Conditions:  The site had been previously backfilled with boulders, and concrete rubble.  An underpinning system was required to advance through all the poor fill and anchor to the bedrock below. 

Drilled Micro-Piles:  Engineered Foundation Technologies installed twenty four underpinning piles to repair the foundation.  The micro-piles were able to drill through the buried obstructions and gain bearing in the bedrock below.  After our work was done, a building mover mobilized and raised the building almost a foot to level the floors above. 

Contact us to see how we can help with your project.