The error in measuring the radius of a 5 cm circular rod was 0.2%. If the cross-sectional area of the rod was calculated using this measurement, then the resulting absolute percentage error in the computed area is __________. (round off to two decimal places)
Match the following in Column X with Column Y :
| Column X | Column Y | ||
|---|---|---|---|
| P. | In a triaxial compression test, with increase of axial strain in loose sand under drained shear condition. The volumetric strain. | I. | decreases |
| Q. | In a triaxial compression test, with increase of axial strain in loose sand under undrained shear condition, the excess pore water pressure. | II. | increase |
| R. | In a triaxial compression test, the pore pressure parameter "B" for a saturated soil. | III. | remains same |
| S. | For shallow strip footing in pure saturated clay, Terzaghi's bearing capacity factor (N$$_q$$) due to surcharge. | IV. | is always 0.0 |
| V. | is always 1.0 | ||
| VI. | is always 0.5 |
Which one of the following combinations is correct?
A saturated compressible clay layer of thickness h is sandwiched between two sand layers, as shown in the figure. Initially, the total vertical stress and pore water pressure at point P, which is located at the mid-depth of the clay layer were 150 kPa and 25 kPa, respectively. Construction of a building caused an additional total vertical stress of 100 kPa at P. When the vertical effective stress at P is 175 kPa. The percentage of consolidation in the clay layr at P is _________. (in integer)
A concentrically loaded isolated square footing of size 2 m $$\times$$ 2 m carries a concentrated vertical load of 1000 kN. Considering Boussinesq's theory of stress distribution, the maximum depth (in m) of the pressure bulb corresponding to 10% of the vertical load intensity will be _________. (round off to two decimal all places)