Drilled concrete pilings can be subject to damage during the extraction of a steel casing. Usually the damage appears as a fracture or separation in the fresh concrete at the periphery of the shaft. As a result, the bearing capacity of the pile may be critically reduced. Most fracturing, however, might not be detected except where subsequent excavation, such as in basement construction, could expose a pile side. The accompanying sketch of a vibrator positioned in the concrete piling, found in the article, illustrates a method for casting concrete piles that reduces the possibility of fracture or separation. Depending on the size of the piling, one or more vibrators are lowered, while running, into the freshly placed concrete to a depth approximately even with the bottoms of the steel casing. With the cables or shafts secured to the top of the sleeve so that the vibrator heads remain close to the lower end of the casing, they are then operated until the casing is completely extracted. Agitation caused by the continuous vibration modifies frictional force and allows the casing to be eased up from the piling without damage to the fresh concrete.