A mixed-use project off Brant Street hit an unexpected lens of saturated silt last fall—vibrations from passing GO trains complicated the shoring response. The general contractor’s first call was for a rapid instrumentation setup because the adjacent 1960s masonry walk-up had zero tolerance for settlement. In Burlington, where the escarpment meets lakefill and the water table sits high across much of the downtown core, excavation monitoring is not a checkbox item. Our team deploys inclinometers, piezometers, and optical prisms the moment the first bucket breaks ground. The data stream runs 24/7, flagged by threshold alerts tied directly to the geotechnical baseline report. For phased digs deeper than 6 m, we often pair vibration monitors with slope stability assessments when the cut face stays open longer than two weeks, and tie into deep excavations analysis if the shoring system relies on tiebacks braced against glacial till.
Monitoring turns an excavation from a blind dig into a controlled procedure—every millimeter of movement has a name and a limit.
