|
|
VALUES OF COMPRESSION INDEX |
|
| PEAT | 1.0 TO 4.5 |
| CLAY PLASTIC | 0.15 TO 1.0 |
| STIFF CLAY | 0.06 TO 0.15 |
| MEDIUM HARD CLAY | 0.03 TO 0.06 |
| LOOSE SAND | 0.025 TO 0.05 |
| DENSE SAND | 0.0005 TO 0.01 |
| NOTE: IN CASE THE SETTLEMENT IS TOO HIGH, PRE LOAD THE CLAY STRATA, OR USE SAND / STONE PILES TO IMPROVE THE BEARING CAPACITY & MINIMIZE THE SETTLEMENT. WHEN LOADS EXPECTED ARE HIGH, PILLING CAN BE A BETTER ALTERNATIVE. UNDER REAMED PILES COULD BE USED FOR LOADS OF SMALLER MAGNITUDE. | |
| SHEAR STRENGTH OF COHESIVE SOIL IN T / M2 | ||
| SR NO. | TYPE OF SOIL | CU |
| 1 | VERY SOFT CLAY . |
0 TO 2.5 |
| 2 | SOFT CLAY | 2.5 TO 5.0 |
| 3 | MEDIUM CLAY | 5.0 TO 10.0 |
| 4 | STIFF CLAY | 10 TO 20 |
| 5 | VERY STIFF/HARD CLAY | 20 TO 40 |
| CU IS UN CONFINED COMPRESSIVE STRESS. | ||
| SHEAR STRENGTH OF SOIL C = CU / 2 | ||
| MODULUS OF ELASTICITY OF SOIL = 500 TO 1000 CU | ||
|
POISSON RATIO |
|
| CLAY SATURATED | 0.50 |
| CLAY WITH SAND + SILT | 0.3 TO 0.42 |
| UN SATURATED CLAY | 0.35 TO 0.40 |
| LOESS | 0.44 |
| SILT | 0.30 TO 0.35 |
| SANDY SOIL | 0.15 TO 0.25 |
| SAND | 0.30 TO 0.35 |
| ROCK | 0.10 TO 0.40 |
This program
calculates allowable SBC of Cohesive
soil only. ( Ø = 0 )