Main Article Content
In this paper, we concern about co-efficient CEN to modify NSPT results for calculating the axial resistance of pile in logical equations relative with PDA testing results. Some of researching results are:
- Using logical equations of JAI; Meyerhof and Bachy – Soletanche give the same trend, but they have different values, because difference of coefficients;
- Level of energy losing in medium dense sand at Thi Vai Refrigerated LPG Storage, Ba Ria-Vung Tau province has a width range changing. So we cannot use NSPT to calculate axial bearing capacity of piles in this project.
- PDA testing results of two piles in LPG storage project give critical unit resistance reach at Lb/d ≈ 10 equivalence 4m from the surface of medium dense sand.