When pile driving is in progress, the pile position should be corrected from time to time; if there is a deviation, it should be pulled back at any time until the setting is completed.
In the course of piling, the pile position should be corrected from time to time, and if there is bias, it should be pulled back at any time until the set-up is completed.
During pile driving, the pile position shall be corrected from time to time; if there is deviation, it shall be pulled back at any time until the completion of driving.