|
<< Click to Display Table of Contents >> Navigation: Eurocodice (EN 1997) > EN 1997 - 2 > Content of Eurocode 7-2 > Laboratory tests > Strength testing of soil - Annex P |
Table P.1 – Triaxial compression tests. Recommended minimum number of tests for one soil stratum
Recommended number of tests to determine the effective angle of shearing resistancea |
|||
|---|---|---|---|
Variability in strength envelope Coefficient of correlation r on regression curve |
Comparable experienxe |
||
None |
Medium |
Extensive |
|
r ≤ 0.95 |
4 |
3 |
2 |
0.95 << r ≤ 0.98 |
3 |
2 |
1 |
r ≥ 0.98 |
2 |
1 |
1 |
Recommended number of tests to determine the undraimed shear strenghta |
|||
|---|---|---|---|
Variability in undrained shear strenght (for same consolidation stress) |
Comparable experience |
||
None |
Medium |
Extensive |
|
Ratio max/min value > 2 |
6 |
4 |
3 |
1,25 < Ratio max/min value ≤ 2 |
4 |
3 |
2 |
Ratio max/min value ≤ 1,25 |
3 |
2 |
1 |
a One recommended test means a set of three individual specimens tested at different cell pressures. |
|||