DHARM
N-GEO\OBJ.PM5 888888 GEOTECHNICAL ENGINEERING
- The curved surface of sliding in the passive case approximates a ............, according to
Terzaghi. - Poncelet’s rule and Rebhann’s condition mean practically the same thing. True/False.
- Poncelet’s graphical construction can be used for the determination of both the active
earth thrust and the location of sliding surface when the angle of inclination of the
backfill surface equals φ. True/False - Poncelet graphical construction is useful for the determination of only the active thrust
on a wall and not the passive resistance of the soil. True/False - Culmann’s graphical method is a simplified version of the more general ............ method.
- Culmann’s method is applicable for a stratified backfill and Poncelet’s method is not.
True/False - Passive resistance cannot be evaluated by Culmann’s method. True/False
- The effect on line load on the lateral earth pressure on a wall can be evaluated by ............
graphical method. - The critical position of a line load for not causing any increase in the lateral pressure on
a wall can be obtained by ............ method. - The depth hc of the tension crack in a cohesive-frictional soil is given by hc = .............
- Unit adhesion ca cannot exceed cohesion c of a backfill soil. True/False
- Coulomb’s wedge theory cannot be applied when the backfill is a cohesive soil. True/
False - A semi-gravity wall need not be as massive as a gravity retaining wall. True/False.
- For a gravity wall the maximum eccentricity of the base reaction for ‘no tension’ condi-
tion to be satisfied is ............. - When the eccentricity of base reaction is the maximum for no tension in the base, the
maximum stress on the foundation soil is ............. - If passive resistance is considered, the factor of safety against sliding and against over-
turning should be more than two for a retaining wall with a cohesive backfill. True/
False. - Both the amount of yield and the pattern of yield of a wall have significant effect on the
nature, distribution, and magnitude of the lateral pressure mobilized. True/False. - ............ theory of earth pressure may be used if a retaining wall has smooth vertical
back. - For a masonry gravity retaining wall, ............ theory of earth pressure is preferred.
- For a cantilever retaining wall, ............ theory of earth pressure may be used.
- The portion of the foundation of any structure, which transmits loads directly to the
foundation soil is called ............. - Gross and net bearing capacities will be the same when the structure is founded at
............. - The two criteria for the determination of bearing capacity of a foundation are (i) ............
and (ii) .............