Phoenix Project #1801
Working inside one of Boston’s largest electric power substations, Phoenix installed a 36” diameter drilled shaft foundation to serve as the base for a 100 foot tall lightning mast needed to protect the facility’s infrastructure from storm damage.
In order to meet the project’s critical schedule, resources were mobilized simultaneously from different states, with well-coordinated delivery times. As soon as the drill rig arrived, it was greeted by a ready crew who walked the machine off the truck and immediately walked it towards the shaft location where it began drilling moments later.
To minimize concerns of hole collapse and also to expedite the process of setting and surveying the anchor bolts in the top of the shaft, Phoenix elected to incorporate its drill casing into the finished product. The use of a pre-fabricated reinforcing cage and anchor bolt template further reduced materials placement time, and the use of an on-site concrete batching unit eliminated delays that often accompany Ready-mix concrete deliveries on a busy summer day.
This project would serve as a preview of coming attractions… A few years later, Phoenix would return to Substation 250 to install over 800 drilled piles to support foundations for a new perimeter security fence.