True False No Answer Undrained loading conditions would prevail during construct

Question

True False No Answer Undrained loading conditions would prevail during construction of a building in a clayey soil Drained loading conditions would prevail during construction of a building in a sandy soil Undrained loading conditions would prevail during an earthquake in a clayey soil Drained loading conditions would prevail during an earthquake in a sandy soil Shear strength of the soil would not be a required in bearing capacity analysis of a foundation, if the foundation is subjected to compressive forces onl If the water table rises following rainfall, the effective stress at a point beneath the water table would increase due to the extra weight of the additional water Downward seepage flow would increase the effective stress Soil samples obtained during the standard penetration test (SPT) can be used in the laboratory to determine the shear strength of the soil A soil sample is obtained during a cone penetration test (CPT) The critical failure circle under undrained condition in homogeneous clays with slope angle greater than 53° is always a toe circle Passive earth pressure coefficient Kp is never smaller than the active earth pressure coefficient K At-rest earth pressure coefficient Ko 1 at al times In the slope stability analysis using method of slices, the widths of slices must be equal when using Bishop's simplified method The factor of safety calculated using Bishop's simplified method is more conservative than the one calculated using the method p The factor of safety against slope failure is generally determined by considering the stability of one potential failure circle ed by Fellenius

Explanation / Answer

1. Answer false: Because when a saturated clay is loaded, it will not let the water out immediately during these most of the failure occur.

2. Answer true: Mostly more constructions are done under drained conditions but a sand is tested for both drained and undrained conditions too

3. Answer false: Under the earthquake the pore water pressure saturation of soil increases and cause liquefaction of soil

4. Answer false: Under the seismic forces, the volume of sand will change in drained condition. it is not economical.

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