17
4.0   2.441   1.625  0.768
3.9   2.453   1.628  0.764
3.8   2.465   1.631  0.761
3.7   2.478   1.635  0.757
3.6   2.490   1.638  0.754
3.5   2.502   1.641  0.750
3.4   2.547   1.664  0.741 
3.3   2.592   1.688  0.731
3.2   2.637   1.711  0.722  
3.1   2.682   1.735  0.712
3.0   2.727   1.758  0.703 
2.9   2.816   1.814  0.689
2.8   2.905   1.869  0.675
2.7  3.034    1.959  0.657
2.6  3.163    2.048  0.639
2.5  3.345    2.188  0.620
2.4  3.526    2.327  0.601

DL/T 5219 - 2023 p107  9.5.3 最后列为桩基础规范p60

