a) Where the preliminary investigation has indicated the feasibility of the project at the site, more detailed site exploration should be under taken. Depending on the results obtained from the preliminary investigation, additional and deeper boreholes may be sunk; more samples extracted (both disturbed and undisturbed); more sounding field tests undertaken to obtain information which shall be sufficient for final design of foundation of structures. Now with the aid of diagram, evaluate the performance of the following exploration methods employed during site investigation of soils:
I. Dynamic Cone Penetration Test
II. Vane Shear Test (VST

b) Terzaghi's bearing capacity equations have been successfully used in the design of numerous shallow foundations throughout the world and are still in use. However, they are now considered by many to be conservative as factors that affect bearing capacity, such as inclined loading, foundation depth, the shear resistance of the soil above the foundation, etc., were not allowed for. Since the publication of the original equations, there have been numerous attempts to improve upon them and refined the solution. Discuss Meyerhof’S Bearing Capacity equation. E

c) Foundations in practice may be broadly classified into two main categories: Discuss the following types of foundations:
I. Shallow foundations
II. Deep foundations
d) In a normally consolidated clay of L,L = 65.5% and 5 m thickness, the overburden pressure is increased from 250 kN/   by 120 kN/   . Estimate the settlement that can take place. Assume saturated water content of 45%.

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Quustion 1 a i Stand and penetration tut It is one of the most site Invrrig ahion during a4 ... View the full answer