The termination depth of bored cast in situ piles poses serious problem to the field engineers particularly on weak weathered rock, stiff clays and dense sands. Some sort of decision making tool is available for driven piles in the form of driving formulae. But for the termination of bored cast in situ piles no such guide is available for field engineers. The paper deals with a simple method based on penetration resistance to the advancement of bore and its relation with end bearing and frictional resistance offered by formation. The method shall serve a very useful purpose for estimation of time frame of piling jobs from the investigation data and serve as a good quality control tool for termination of piles in field.