Underpinning and Lifting of Existing Foundation Wall – New Haven, CT
PROBLEM: This two story apartment building had foundation wall settlements up to 14″ due to loose fill along with organic silt and loose virgin sand soils.
SOLUTION: We installed fourteen resistance piers with a design load of 22 kips and test load of 44 kips. The piers were installed through fills and very loose sands to 20′ – 25′ depths.
RESULT: The foundation wall was supported and stabilized with lifts up to 11-1/2″. Any further settlement along the foundation wall was stopped.
Atlas Resistance Piers are commonly used to stop and reverse foundation settlement. Typical working loads for 2-7/8″ to 4-1/2″ diameter piers range from 30 to 55 kips.
Atlas Resistance Pier Capabilities include:
- Design loads up to 55 kips (ultimate 110 kips)
- Limited access needed for installations: 3-1/2′ x 3-1/2′ opening and only 7′ of headroom
- End bearing 2-7/8″ to 4-1/2″ dual wall or single wall pipe (minimum N-value of 40-50 required)
Atlas Piers are the most rugged H.D. pier available. Also, Atlas geotechnical engineers are on call to provide preliminary design for every project.