PROJECT OVERVIEW
Phoenix Project #2006
For this project, drilled micropiles (“DMPs”) were installed to support new foundations at the Woodstock Ave Bridge Replacement project in Putnam, CT. This location provided a challenge, as the terrain was made up of a steep slope that led into a deep body of water. Phoenix had to be cautious of the situation, and barriers were put in by the bank of the water to avoid flooding.
Before construction began, a verification load test was performed on one sacrificial pile to verify an allowable bond stress value of 150 psi between the micropile grout and bedrock.
All piles were permanently cased through all overburden soils and socketed uncased into the underlying natural bedrock formation. After each hole was advanced to the required tip elevation, the borehole was flushed clean so grout could be placed via tremie. After the grout placement was complete, the tremie was removed and replaced with core steel attached with centralizers at 10 foot intervals.
Overall, Phoenix installed all piles successfully and safely with the challenge of a small area to work with and a large body on water directly next to the site.
