Crosshole sonic logging (CSL) is performed on drilled shafts and other cast-in-place concrete piles to determine the quality of the concrete within the reinforcing cage, and reveal major flaws or defects. Prior to testing, two or more parallel access tubes are installed, attached to the reinforcing cage. After a minimum curing period, a transmitting probe, emitting a high frequency sound signal, and receiver probe are pulled through the access tubes. Variations in the arrival time or energy level of the signal can indicate changes in the concrete density or the existence of voids or soil intrusions into the pile shaft.
Why CSL?
Crosshole sonic logging can identify potential flaws and defect zones along the length of your pile. This is especially important when concrete is placed under water or slurry that prevents a visual inspection of the pile shaft during construction. As of 2010, Alberta Transportation requires CSL testing on piles used for bridge construction which are cast underwater.
Why Right Six?
Our trained engineers have been performing CSL throughout Alberta and western Canada for over four years.