Bank of New Hampshire, Nashua NH
Soil Foundation Problem:
During soil testing for an addition for the Bank of NH, engineers encountered soft soils consisting of concrete, ash and organics that would not be suitable to support the new foundation. The bank management also required that the installation of the foundation be vibration-free since the bank would remain open during construction.
Solid Earth's Solution:
To secure the foundation, we installed AB CHANCE HELICAL PIERS encased in concrete to reach the competent layer of sandy soil, which was 18 to 34 feet below the surface. The piers were installed using a drive head motor mounted to a backhoe loader.
Lynn Transfer Station, Lynn Massachusetts
Soil Foundation Problem:
During renovations and additions, The Lynn Transfer Station needed to support two new weighing scales that would be installed upon unstable soils consisting of loose silts and soft clay deposits.
Solid Earth's Solution:
Based on the results of the soil tests, the engineer recommended that the scale structures be supported by deep foundation elements (AB CHANCE PULLDOWN MICROPILES tm) which would penetrate existing fill, sand and soft clay deposits. Our crew installed a total of twenty-four Helical Piers to depths of 25 feet with a 6 foot grout column. AB Chance New Construction Brackets were used to secure the base slab below the scales to the piers. Each pier installed is capable of supporting 50 Kips.
The Snow Inn – Luxury Coastal Condominiums
Soil Foundation Problem:
The Snow Inn, luxury residential condominiums on Cape Cod needed Helical Pile support. The shoreline soil consisting of loose to medium sands and organics, was not suitable for supporting a heavy building.
Solid Earth's Solution:
After soil boring tests were performed by Coastal Engineering, Solid Earth proposed to install grouted Pull-down™ Micro Piles to support the structure. Each pile was installed over 40 feet into the ground to achieve a working load of 50 Kips and an ultimate capacity of 100 Kips.
