Many kinds of formulas for axially bearing capacity of single piles have been proposed about in this a hundred year. Ones, therefore, who have not sufficient knowledge of bearing capacity of piles, are at a loss which formula to use, when they intend to estimate bearing capacity of piles. The first aim in this report is to pick up the most suitale formula from a large numbers of static and dynamic formulas, examining relations between each calculated values and results of load tests.
　Dorr's, Terzaghi's, and Meyerhof's formulas and the proposal by Tomlinson are picked up as typical examples of static ones. Comparing the ultimate loads of tests with each values of ultimate bearing capacity of static formulas, and considering difference between each calculated values at the same condition; the followng facts become clear.