Abstract:
The owner of an existing 21-story office building, with 2-story below grade parking, developed plans adding more office and retail space through a 5-story, partial wraparound of the existing tower. At ground level, the wraparound replaced landscaped terraces bearing on the below grade parking garage roof. New columns extended through the parking garage up to the new structure. Moderately loaded micropiles installed from low headroom into moderately hard to hard bedrock supported these columns, conditions ideally suited for micropiles.