November 2017 - February 2018
Wagman’s Geotechnical Construction group installed approximately 130 micropiles for foundation support for the new Pennsylvania American Water Headquarters, a major building addition on their Capital Campus. These piles were drilled and grouted in a challenging karst environment, through multiple soils seams and voids. A detailed unsupported length analysis was required due to some piles spanning voids. Three load tests were completed to verify capacity of the micropiles, including one on a pile spanning a subsurface void. Extreme care was required to ensure the piles were fully grouted, while also considering the cost impact of grout overruns.
Key Challenges & Project Details
- In a challenging karst environment, Wagman’s team had to utilize their experience while drilling in the variable subsurface conditions and employ techniques to control grout loss from the micropiles.
- Wagman was able to self perform the geotechnical work on this project, as Wagman Construction, Inc. was the general contractor of the project.