Extended Column test Instructional video #2

In this video, Eric Knoff explains how to set up an Extended Column Test (ECT) using one avalanche probe. This method involves doing a shovel shear test on one end of the 90 cm column in order to open a space for the cord to saw behind the column. This method is good for isolating ECT columns if you're dealing with a deeper weak layer or stiffer slab. Only using one avalanche probe helps reduce the friction on the cord and makes it easier to isolate the column.